共查询到20条相似文献，搜索用时 515 毫秒
1.
Guiping Li Peidu Chen Shouzhong Zhang Xiue Wang Zhonghu He Yan Zhang He Zhao Huiyao Huang Xiangchun Zhou 《Euphytica》2007,155(3):305-313
Nineteen common wheat cultivars and advanced lines carrying a 6VS.6AL translocation and five parents were sown at two locations
in Jiangsu in 2004–05 season to assess the effects of the translocation on grain yield and dough properties. In general, there
were no significant differences between 6VS.6AL lines and their recurrent parents in agronomic, mixograph and starch pasting
traits, including grain yield, grains/spike, grain weight/spike, mixing time and peak viscosity. 6VS.6AL lines showed slightly
but significantly higher thousand-kernel weight and plant height, and small negative effects on test weight, flour yield and
flour colour. However, significant variation occurred for all traits among sister lines from the same cross, indicating that
additional selection could lead to further improvement. It was concluded that the 6VS.6AL translocation can be used in wheat
breeding programs as a donor of resistance to powdery mildew with no obvious undesirable effects on agronomic and quality
traits. 相似文献
2.
基因型、地点及其互作对内蒙古小麦主要品质性状的影响 总被引：3，自引：0，他引：3
选用来自我国春播麦区高、中、低3种筋力类型的9个品种, 于2003和2004年分别种植在内蒙古6个代表性地点, 研究了不同品种在年份和地点间籽粒硬度、蛋白质含量、和面仪参数和淀粉糊化特性等主要品质性状的变化规律。结果表明, 所测品质性状受基因型和地点效应的影响均达极显著水平, 除籽粒蛋白质含量外, 其他品质性状受基因型和地点互作效应的影响达显著或极显著水平。强筋类品种的蛋白质含量、灰分含量、沉降值、和面时间、耐揉性和峰值黏度均较高, 出粉率和稀澥值中等。中筋类品种出粉率、和面时间和耐揉性较高, 灰分含量、峰值黏度和稀澥值较低。弱筋类品种的灰分含量、峰值黏度和稀澥值较高, 籽粒硬度、蛋白质含量、出粉率、沉降值、和面时间、耐揉性低。所有品种品质性状在地点间存在较大差异, 乌海市灰分含量、和面时间和耐揉性高, 籽粒硬度、沉降值、峰值黏度和稀澥值较低。杭锦后旗出粉率高, 蛋白含量和沉降值较低, 其他性状表现中等。呼和浩特市籽粒硬度、蛋白含量、面粉灰分、沉降值、和面时间和耐揉性高, 出粉率、峰值黏度和稀澥值低。赤峰市多数性状表现中等。通辽市籽粒硬度、蛋白质含量、峰值黏度、稀澥值和耐揉性较高, 其他性状表现中等。额尔古纳市蛋白含量和沉降值较高, 和面时间和耐揉性低。初步认为强筋和中筋类品种较适于种植在呼和浩特市与乌海市, 不适于种植在额尔古纳市; 2个弱筋类品种在6个地点均不太适宜种植。 相似文献
3.
Comparison of phenotypic and molecular marker-based classifications of hard red winter wheat cultivars 总被引：8，自引：0，他引：8
H. Fufa P. S. Baenziger B.S. Beecher I. Dweikat R. A. Graybosch K. M. Eskridge 《Euphytica》2005,145(1-2):133-146
Genetic diversity is the basis for successful crop improvement and can be estimated by different methods. The objectives of
this study were to estimate the genetic diversity of 30 ancestral to modern hard red winter wheat (Triticum aestivum L.) cultivars adapted to the Northern Great Plains using pedigree information, morphological traits (agronomic measurements
from six environments), end-use quality traits (micro-quality assays on 50 g grain or milled flour samples for the six environments),
and molecular markers (seed storage proteins separated using SDS-PAGE, 51 SSRs, and 23 SRAP DNA markers), and to determine
the relationships of genetic distance estimates obtained from these methods. Relationships among diversity estimates were
determined using simple (Pearson) and rank (Spearman) correlation coefficients between distance estimates and by clustering
cultivars using genetic-distances for different traits. All methods found a wide range in genetic diversity. The genetic distance
estimates based on pedigree had the highest values due to possible over-estimation arising from model assumptions. The genetic
diversity estimates based on seed storage protein were lowest because they were the major determinants of end-use quality,
which is a highly selected trait. In general, the diversity estimates from each of the methods were positively correlated
at a low level with the exceptions of SRAP diversity estimates being independent of morphologic traits (simple correlation),
SDS-PAGE, and SSR diversity estimates (rank correlation). However, SSR markers, thought to be among the most efficient markers
for estimating genetic diversity, were most highly correlated with seed storage proteins. The procedures used to accurately
estimate genetic diversity will depend largely upon the tools available to the researcher and their application to the breeding
scheme. 相似文献
4.
Baking quality of hard winter wheat: Response of cultivars to environment in the Great Plains 总被引：2，自引：0，他引：2
Inconsistency of wheat end-use quality has long been a problem for the milling and baking industries, which require high levels
of uniformity for modern, high speed, processing. Extensive research was conducted to characterise genetic, environmental,
and biochemical factors that contribute to variation in wheat quality. Samples from 17 locations of trials with 30 cultivars
grown over two years were evaluated for grain quality, milling yield, mixograph parameters and baking properties. Protein
quality and composition of flour samples were determined by SDS sedimentation and size-exclusion chromatography. Test sites
were monitored for soil fertility, and meteorological data was collected hourly during grain fill. Additional grain samples
and data were collected from six cultivars grown at 11 locations in 1993. Significant variation in end-use quality was observed
among samples; variation was attributed to environmental effects, genotype, and their interactions. For many mixograph and
baking parameters, variation attributed to environmental effects was of greater magnitude than for genotype. Increasing levels
of low molecular weight (LMW) saline soluble proteins were related to a general decline in dough mixing properties and loaf
characteristics. However, correlations of protein components with baking parameters were generally low, suggesting limited
predictive value. Hours of high temperature stress (>32 °C) during grain fill were associated with loaf volume and SDS sedimentation
volume, although in a curvilinear fashion. Increasing temperature stress initially had a positive influence on loaf volume
and protein quality; however, when temperature stress exceeded 90 hours, there was a strong negative influence on baking quality.
Variation among cultivars for environmental stability was indicated and cultivar responses to temperature stress varied. Relationships
with meteorological data suggest opportunities to predict wheat end-use quality through environmental modelling.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
5.
Summary Hard white winter wheat (HWWW) occupies a very limited area of the USA, but its purported advantages suggest that its production in the major hard red winter wheat (HRWW) region may be feasible. Objectives of our investigations were to develop experimental HWWW lines that combined desirable attributes-grain yield, functional grain quality, and resistance to preharvest sprouting-in single genotypes for comparison with popular cultivars in the major US RHWW region. Forty-four lines from seven parental combinations were tested in randomized complete block designs at three Kansas locations during the 1981–82 and 1982–83 seasons. Agronomic traits, grain yield, grain quality, and preharvest sprouting were measured. Plant characteristics and grain yield were similar in the HWWW experimental lines and the HRWW check cultivar, Newton. Mean grain SDS-sedimentation value and grain protein content of most experimental lines equaled or exceeded that of the check. Dough mixing times frequently were shorter for the experimental lines than for the check cultivar, whereas loaf volumes were greater. Falling number usually was similar in all geneotypes, but -amylase was higher in field-harvested grain of white lines than the check; both measures were more favorable than grain trade standards. We concluded that production of high yielding, high quality hard white winter wheat genotypes is feasible in the US breakbasket.Contribution no. 84-349-J, Department of Agronomy, Kansas State University, Manhattan, KS 66506 USA. 相似文献
6.
Combining ability analysis for harvest index in winter wheat 总被引：1，自引：0，他引：1
Summary Cereal breeders have used harvest index (HI) as a selection criterion in segregating generations to identify physiologically superior lines with improved partitioning of total assimilate into grain. Information on combining ability for HI of the hard red winter wheat (Triticum aestivum L.) cultivars of the Southern Great Plains is not available. A study was undertaken to examine HI of seven genetically diverse winter wheat parents, evaluate their general combining ability (GCA) and specific combining ability (SCA) effects, and study correlations of HI with several agronomic traits. The seven parents were crossed in a half-diallel mating design to produce 21 crosses. The F1's, their F2 progenies, and the parents were evaluated in replicated field tests at Stillwater and at Lahoma, OK. The combining ability analysis was performed using Griffing's Method 4, Model 1. The results showed significant variation among parents for HI. The GCA and the SCA effects were mostly inconsistent between generations and between environments. However, parents with consistently high HI and positive GCA estimates were identified. The progeny with high HI mostly resulted from parents with high GCA estimates. The correlations between HI and agronomic traits indicated that improvement in HI should also result in high grain yield, early maturity, and short plant height. 相似文献
7.
Sets of D-genome disomic substitution lines of ‘Langdon’ (Triticum turgidum var. durum) were used to study the effect of chromosome substitutions on grain yield and flour technological properties. In general, the substitution of any D-genome chromosome had a detrimental effect on grain yield and growth vigour (some lines were sterile). SDS-sedimentation, SE-HPLC and two-gram mixograph procedures were used to measure dough strength of the lines studied. Significant correlations were observed between protein concentration and grain yield and other quality parameters such as SDS-sedimentation value, the proportion of glutenin, dough mix time and peak resistance. Most of the quality characters were highly correlated with each other. Substitution of chromosomes 1D, 5D, 2D and 7D resulted in positive responses to SDS-sedimentation values, but only chromosome 1D had positive effects on the proportion of peak 1 (P1%), measured by SE-HPLC. Besides the major influence of chromosome 1D on three major mixograph parameters (mixing time, peak resistance and resistance breakdown), chromosome 5D also exhibited significant effects on these mixing parameters. Principal-component analysis showed that the predominant effect on durum-wheat rheological properties was from chromosome 1D, whereas chromosome 5D had a major effect on grain hardness (50%) and increased the whiteness of the flour. 相似文献
8.
Edward Witkowski Jacek Waga Krystyna Witkowska Marcin Rapacz Magdalena Gut Amelia Bielawska Helena Luber Adam J. Lukaszewski 《Euphytica》2008,159(3):377-384
Subunits of high molecular weight glutenins strongly influence wheat bread making quality and can be associated with important
agronomic traits. Polish winter wheats show a significant quantitative dominance of the null allele over the coding alleles of the Glu-A1 locus. To identify the causes of such skewed distribution, 116 F5 lines obtained from six cross combinations were analyzed for their HMW glutenin subunits and 11 agronomic characteristics,
such as plant height and uniformity, leaf blotch and leaf rust resistance, grain yield per plot, number of grains per ear,
grain yield per ear, 1000 kernel weight, frost tolerance, total protein content and the SDS-sedimentation value. The SDS-sedimentation
value, resistance to leaf blotch and frost tolerance showed statistically significant associations with the status of the
Glu-A1 locus. It appears that chromosome 1A with the null allele at Glu-A1 carries a closely linked locus responsible for frost tolerance. With early strong selection for winter hardiness, the null
allele of Glu-A1 becomes fixed in advanced breeding materials despite its strong negative impact on the end use quality. 相似文献
9.
Effect of environment and genotype on bread-making quality of spring-sown spring wheat cultivars in China 总被引：8，自引：0，他引：8
Improvement of end-use quality in bread wheat depends on a thorough understanding of current wheat quality and the influences of genotype (G), environment (E), and genotype by environment interaction (G × E) on quality traits. Thirty-nine spring-sown spring wheat (SSSW) cultivars and advanced lines from China were grown in four agro-ecological zones comprising seven locations during the 1998 and 1999 cropping seasons. Data on 12 major bread-making quality traits were used to investigate the effect of G, E, and G × E on these traits. Wide range variability for protein quantity and quality, starch quality parameters and milling quality in Chinese SSSW was observed. Genotype and environment were found to significantly influence all quality parameters as major effects. Kernel hardness, flour yield, Zeleny sedimentation value and mixograph properties were mainly influenced by the genetic variance components, while thousand kernel weight, test weight, and falling number were mostly influenced by the environmental variance components. Genotype, environment, and their interaction had important effects on test weight, mixing development time and RVA parameters. Cultivars originating from Zone VI (northeast) generally expressed high kernel hardness, good starch quality, but poor milling and medium to weak mixograph performance; those from Zone VII (north) medium to good gluten and starch quality, but low milling quality; those from Zone VIII (central northwest) medium milling and starch quality, and medium to strong mixograph performance; those from Zone IX (western/southwestern Qinghai-Tibetan Plateau) medium milling quality, but poor gluten strength and starch parameters; and those from Zone X (northwest) high milling quality, strong mixograph properties, but low protein content. Samples from Harbin are characterized by good gluten and starch quality, but medium to poor milling quality; those from Hongxinglong by strong mixograph properties, medium to high milling quality, but medium to poor starch quality and medium to low protein content; those from Hohhot by good gluten but poor milling quality; those from Linhe by weak gluten quality, medium to poor milling quality; those from Lanzhou by poor bread-making and starch quality; those from Yongning by acceptable bread-making and starch quality and good milling quality; and those from Urumqi by good milling quality, medium gluten quality and good starch pasting parameters. Our findings suggest that Chinese SSSW quality could be greatly enhanced through genetic improvement for targeted well-characterized production environments. 相似文献
10.
MA Yan-Ming FENG Zhi-Yu WANG Wei ZHANG Sheng-Jun GUO Ying NI Zhong-Fu LIU Jie 《作物学报》1962,46(12):1997-2007
Grain yield is one of the most important goals in wheat breeding, and agronomic or yield-related traits can directly reflect the characteristics of varieties. In order to determine the evolution of genetic diversity in agronomic traits of Xinjiang winter wheat varieties and their adaptabilities to different ecological environments, 134 winter wheat landraces and 54 moderns bred varieties from Xinjiang were selected for agronomic trait investigation. They were planted in three different ecological environments (Urumqi and Yining in Xinjiang province, and Tai’an in Shandong province) for two consecutive growth seasons, and nine agronomic and yield-related traits were surveyed and analyzed. The estimated broad sense heritability of nine agronomic and yield traits was in descending order: plant height > grain width > grain length/width ratio > spike length > spikelet number > thousand- kernel weight > grain number per spike > grain length > fertile spikelet number. Correlation analyses of nine agronomic and yield traits showed that these traits were correlated with each other. It was found that the plant height, spike length and grain length/width ratio of landraces were higher than that in modern bred varieties, but the grain number per spike, thousand kernel weight, grain length and grain width in landraces were less than that in modern bred varieties. However, the correlation coefficient of these nine traits was higher in modern bred varieties than that in landraces. These variations reflected the evolution of Xinjiang winter wheat varieties in agronomic traits in recent years. This study may provide important information for breeders to select the breeding parents in different winter wheat regions. 相似文献
11.
Hiroyuki Tanaka Yasir S. A. Gorafi Motohiro Fujita Haruka Sasaki Izzat S. A. Tahir Hisashi Tsujimoto 《Breeding Science》2021,71(2):184
Heat stress during grain filling has been documented to decrease wheat grain yield and quality in arid regions worldwide. We studied the effect of heat stress on wheat flour quality in heat tolerant cultivars to define the effects of heat stress on flour quality and to identify germplasm combining traits for heat tolerance and good flour quality. We studied the kernel phenotypic traits, the expression of seed storage proteins (SSPs), and the resulting flour quality under heat and normal conditions. Under heat stress, all cultivars yielded narrow-shaped seeds, and increased protein contents as compared to the control plants grown under normal conditions. The specific sedimentation values used to estimate the gluten quality varied between cultivars. We identified cultivars that could maintain good flour quality under heat stress conditions: ‘Imam’, which possessed the Glu-D1d allele responsible for the suitable bread-making; ‘Bohaine’, which displayed high expression level of SSPs; and ‘Condor’, which possessed slight variations in the ratio of each SSP under heat stress conditions. Combining the desirable traits from these cultivars could yield a wheat cultivar with heat tolerance and good flour quality. 相似文献
12.
Growing in Central Europe winter instead of spring durum wheat would substantially increase yield potential but is currently hampered by the lack of knowledge of frost tolerance present in elite material. The objectives of our survey were to (i) study the genetic variability and heritability of frost tolerance and its association with other important agronomic and quality traits in durum wheat, (ii) examine the potential to combine frost tolerance with high quality and high grain yield and (iii) investigate the consequences of the heritabilities and associations among traits on the optimum design of a multistage selection programme for winter durum wheat. We investigated 101 elite winter durum wheat lines and four commercial checks in field trials at four locations. Four agronomic as well as nine quality traits were recorded. In addition, frost tolerance was evaluated using a semi‐controlled test resulting in high‐quality phenotypic data. Genotypic variances (σ²G) were significantly larger than zero for all traits, and heritabilities were moderate to high. Several elite durum wheat lines exhibited a frost tolerance comparable to that of two frost‐tolerant Triticum aestivum varieties. Frost tolerance was not negatively associated with other important agronomic and quality traits. The high quality of the phenotypic data for frost tolerance evaluated in a semi‐controlled test suggests that this is a cost‐efficient approach to consider frost tolerance at early stages of a multistage durum wheat breeding programme. 相似文献
13.
SDS不溶性谷蛋白大聚体含量与和面仪参数的关系 总被引：2，自引：0，他引：2
选用品质差异较大的108份主栽品种和高代品系, 测定其谷蛋白聚合体总量(双缩脲法)和贮藏蛋白组分含量及比例(凝胶色谱法, SE-HPLC), 并分析了它们与蛋白质含量、沉降值以及和面仪参数等早代选择参数的相关性。结果表明, 参试材料品质特性和贮藏蛋白组分含量的变异范围都较大。和面仪峰值时间变异范围为1.12~7.19 min, 变幅达6.07 min; 醇溶蛋白总量和SDS可溶性谷蛋白聚合体(EPP)变幅较小, 而SDS不溶性谷蛋白大聚体(UPP)的变幅最大。硬度、蛋白质含量和沉降值与和面峰值时间的相关系数较低(r=0.24~0.49)。醇溶蛋白总量与和面仪参数相关不显著, 而与谷蛋白总量的比值(Gli/Glu)与和面仪参数呈显著负相关(r= –0.52~ –0.61, P＜0.001), 且不受蛋白质含量的影响。SDS不溶性谷蛋白大聚体百分含量(%UPP)与和面仪参数的相关性最高, 相关系数为0.70~0.85(P＜0.001)。SE-HPLC法样品用量少, 自动化程度高, 且%UPP和Gli/Glu为相对值, 与和面仪参数呈高度相关, 可作为面筋强度早代选择的有效指标。 相似文献
14.
Genetic architecture of seedling drought tolerance is complex and needs to be better understood. To address this challenge, we developed a protocol to identify the most promising drought-tolerant genotypes at the seedling stage in winter wheat. A population of 146 recombinant inbred lines (F9) derived from a cross between wheat cultivars, ‘Harry’ (seedling drought tolerant) and ‘Wesley’ (seedling drought susceptible) were used in this study. All genotypes were sown in three replications in a randomized complete block design under controlled conditions in a greenhouse. Seven traits were scored and grouped into tolerance traits; days to wilting, leaf wilting, and stay green and survival traits; days to regrowth, regrowth, drought survival rate, and recovery after irrigation. Three selection indices were calculated (1) tolerance index, (2) survival index, and (3) drought tolerance index (DTI). The same set of genotypes were also tested for grain yield in two low rainfall environments for two seasons. High genetic variation was found among all genotypes for all seedling traits scored in this study. Correlations between tolerance and survival traits were weak or did not exist. Heritability estimates ranged from 0.53 to 0.88. DTI had significant phenotypic and genotypic correlations with all seedling traits. Genotypes were identified with a high drought tolerance at the seedling stage combined with high grain yield in low rainfall. Breeding for tolerance and survival traits should be taken into account for improving winter wheat drought tolerance at seedling stage. The selected genotypes can be used for to further improve drought tolerance in high yielding wheat for Nebraska. 相似文献
15.
C. A. McCartney D. J. Somers O. Lukow N. Ames J. Noll S. Cloutier D. G. Humphreys B. D. McCallum 《Plant Breeding》2006,125(6):565-575
Wheat grain quality is a complex group of traits of tremendous importance to wheat producers, end‐users and breeders. Quantitative trait locus (QTL) analysis studied the genetics of milling, mixograph, farinograph, baking, starch and noodle colour traits in the spring wheat population RL4452/‘AC Domain’. Forty‐seven traits were measured on the population and 99 QTLs were detected over 18 chromosomes for 41 quality traits. Forty‐four of these QTLs mapped to three major QTL clusters on chromosomes 1B, 4D, and 7D. Fourteen QTLs mapped near Glu‐B1, 20 QTLs mapped near a major plant height QTL on chromosome 4D, and 10 QTLs mapped near a major time to maturity QTL on chromosome 7D. Large QTLs were detected for grain and flour protein content, farinograph absorption, mixograph parameters, and dietary fibre on chromosome 2BS. QTLs for yellow alkaline noodle colour parameter L* mapped to chromosomes 5B and 5D, while the largest QTL for the b* parameter mapped to 7AL. 相似文献
16.
I. S. A. Tahir N. Nakata A. M. Ali H. M. Mustafa A. S. I. Saad K. Takata N. Ishikawa O. S. Abdalla 《Plant Breeding》2006,125(4):323-330
High temperature influences both grain yield and end‐use quality of wheat. The objectives of this study were to evaluate the performance of selected wheat genotypes under heat stress and to examine the effects of high temperatures during grain filling on grain yield and end‐use quality parameters. Fifteen bread wheat genotypes in 2000/2001 and 18 genotypes in 2002/2003 were evaluated under the optimum and late‐sowing conditions of the irrigated hot environment of the Gezira Research Farm, Wad Medani, Sudan. The genotypes comprised released varieties and elite lines from the Sudanese wheat improvement programme. Data collected included grain yield, grain weight and grain end‐use quality including protein content, protein composition, SDS sedimentation values (SDSS) and gluten strength as determined by mixograph analyses. High temperatures significantly decreased grain yield by decreasing grain weight. Although genotypes exhibited variation in magnitude of response, results indicated that high temperature during grain filling increased both soluble and insoluble protein contents, SDSS, mixograph peak height (MPH) and the descending slope at 2 min past peak (MDS). In contrast, mixograph peak time (MPT) and the curve width at 2 min past peak (MCW) were significantly decreased. Flour protein correlated positively with SDSS, MPH and MDS and negatively with MCW. MPT correlated negatively with MDS and positively with MCW. Results indicate that high temperature increased both soluble and insoluble protein contents, SDSS and MPH, and hence the gluten strength, but decreased flour mixing time and tolerance and hence the dough elasticity. Variation observed among genotypes suggests that grain end‐use quality could be improved under high temperature conditions utilizing the available variability; however, it might require evaluation under various growing conditions. 相似文献
17.
18.
All wheat varieties (106) grown in the U.S. on more than 100,000 acres (38,610 ha) as of the latest (1984) crop variety survey were characterized by sodium dodecylsulfate-polyacrylamide gel electrophoresis (SDS-PAGE). The high-molecular-weight glutenin subunit (HMW-GS) band patterns for each variety were assigned the corresponding Payne numbers and theoretical quality scores based on those assignments. The subunit assignments were compared for the different wheat varieties and the five main wheat classes grown in the U.S. Hard red spring (HRS) and winter (HRW) wheats used mainly for breadmaking showed a remarkably high percentage of bands associated with good breadmaking quality. The allele 5+10, which has the strongest association with good quality, was present in 91 % of the hard red spring wheats and 62 % of the hard red winter wheats. Also, 91 % of all HRS and 53 % of HRW wheat varieties had quality scores of 9 or 10 (10 is the highest possible score). Evidently, by selecting for quality through close cooperation with quality testing laboratories, U.S. breeders have unknowingly selected for high quality glutenin subunits in their released varieties. HRS and HRW wheat varieties are normally grown in different environments in time and/or space, accounting to a large extent for differences in protein content (～2 %) and other quality traits in the two crops. The uniformly high theoretical quality scores of the HRS wheats compared to more variable scores for HRW wheats may help to explain the popular perception that spring wheats have intrinsically higher quality than winter wheats. Admixing grain from variable (some poorer, most good) HRW wheat varieties (due to genetics or environment) has probably also led to the perception of overall lower quality for HRW than HRS wheats. In the soft red winter (SRW) and soft white (SW) wheat classes where the end-use is typically cookies and cakes, 40 and 90 %, respectively, have the allele 2+12 that correlates with poor bread baking quality. The absence of alleles for good bread baking quality may be predictive of good quality for soft wheat products. 相似文献
19.
20.
Summary The increasing popularity of organic agriculture and health food products has led to a renewed interest in hulled wheat species such as emmer (Triticum turgidum ssp. dicoccumSchubler). Knowledge on agronomic and quality traits is required for effective and efficient use of germplasm collections in breeding programs. The objective of this study was to estimate agronomic and grain quality traits of emmer wheat cultivated in Italy. A total of 20 emmer accessions consisting of landraces, breeding lines or cultivars selected from landraces and modern cultivars were examined under low input conditions. The study was conducted for three successive years (2002–2004) at one location of Southern Italy (Foggia). The entries were characterized for agronomic and qualitative traits [grain yield (t ha−1), thousand grain weight (g), test weight (kg hl−1), grain protein content (%), HMWG composition, dry gluten content (%), gluten index and yellow index, alveograph indices and Total Organic Matter (TOM) on cooked pasta]. The results showed a large genetic variability for most of the traits measured and, even if most of the accessions showed inferior bread- and pasta-making performance, modern cultivars exhibited improved quality traits with some potential to perform healthy and tasty food. 相似文献