奔牛大青豆保护性繁育     

黄伟丽  陆丽巧  张文艺 《湖北农业科学》2012,(4):674-676

为使奔牛大青豆这一地方特有的优良种质资源得以保存和繁殖,对其进行了品种资源的收集、整理和试种,总结了该品种的栽培技术,并获得3个性状表现较好的奔牛大青豆品系,对其营养品质、卫生品质、主要性状进行了研究。结果表明,3个品系的主要性状、营养品质及卫生品质均符合亚洲蔬菜研究与发展中心(AVRDC)推荐的菜用大豆标准,特别是3号品系很多性状及品质指标都大大高于普通菜用大豆,可作为菜用大豆的优良品系进一步提纯、扩繁和推广。研究对奔牛大青豆的推广种植及物种保护都有一定的理论和实用价值。  相似文献   

Pollination,fertilization and seed development in winter stocks of faba beans (Vicia faba L.)     

F. L. Stoddard 《Euphytica》1986,35(3):925-934

Summary Incidences of pollination and fertilization were determined in five stocks of winter bean (two populations, two inbred lines, one cultivar) in two years. In the second year, irrigation was included as an experimental treatment and the development of seeds was monitored. Large differences between years were found in the measures of pollination and fertilization, and irrigation was associated with a small but significant increase in the proportion of ovules which were fertilized within fertilized flowers, particularly in the ovules furthest from the stigma. This increase was clearly reflected in the corresponding indices of seed maturation in the irrigated plants. Irrigation was not associated with any change in the proportion of ovules which aborted. Small but statistically significant differences in all of the measures of pollination and fertilization were found among the stocks. It is suggested that the variation in the incidences of pollination and fertilization was largely associated with variation in the synchrony of anthesis within racemes. The proportion of ovules within pods which matured as seeds and the proportion which aborted both varied significantly among the five stocks. Abortion appeared to act independently of fertilization in affecting the index of seed maturation, so both mechanisms should be considered when breeding for improved filling of pods.  相似文献   

A Quantitative Method to Assess Freezing Resistance in Faba Beans   总被引：2，自引：0，他引：2  

H. Herzog 《Journal of Agronomy and Crop Science》1987,158(3):195-204

In order to quantify freezing resistance (R₅₀) of winter faba beans from a limited number of plants, leaves were exposed to artificial freezing stresses with different test temperatures (TT_i). Injury (I_i) was assessed by rating (score: 0—8) and by conductivity measurements. The basic assumption that I_i depends almost linearly on TT_i over a sufficiently broad range with a constant ΔI/ΔTT could be verified and hence a formula is presented to compute freezing resistance R₅₀= (I_i—I₅₀) ×ΔTT/ΔI + TT_i with I₅₀ being a medium injury. This formula allows to quantify resistance by assessing I_i after freezing test(s) with definite TT_i. About 25 leaves are required. Rating appeared preferable to conductivity measurements because of easier and quicker performance and a slightly better discrimination between samples of different resistance. Based on a standardized freezing test, ΔI/ΔTT was determined. Application of the formula with ΔI/ΔTT = 2.5 units/°C for unhardened and hardened leaves, restrictions and experiences are discussed.  相似文献   

Random amplified polymorphic DNA (RAPD) markers variability among cultivars and landraces of common beans (Phaseolus vulgaris L.) of south-Brazil     

F.L. Maciel  L.T.S. Gerald  S. Echeverrigaray 《Euphytica》2001,120(2):257-263

To evaluate the variability among cultivars and landraces of common bean(Phaseolus vulgaris L.), 15 cultivars and 18 landraces of common bean (Phaseolus vulgarisL.), a undefined species of Phaseolus,two landraces of Vigna angularis L., and a landrace of soybean (Glycine maxL.), were screened with fifteen oligonucleotide primers in PCR reactions. An average of 20.3 RAPD bands were scored per primer. A total of 304 amplification products were scored of which 88.8% were polymorphic among Phaseolus genotypes. Based on the RAPD markers, four major clusters were formed. Three clusters corresponded to the soybean, to the two Vigna angularis landraces, and to the Phaseolus sp. landrace, respectively. The fourth cluster include all the landraces and cultivars of Phaseolus vulgaris. This large group could be separated into three subgroups that were correlated with the phaseolin patterns and the average seed weight of the genotypes. The analysis shows that most of the landraces collected in South Brazil (17 out of 18) belong to the Andean gene pool, and most of the cultivars (13 out of 15) belong to the Middle American gene pool. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

非发酵酸味豆奶的研制     

蓬开文  唐君 《农产品加工．学刊》2007,(1):55-58,63

在常饮的豆奶中加入酸味剂,能改善豆奶的风味。但大豆蛋白遇酸易变性,从而影响产品的稳定性。本实验从稳定剂、乳化剂、酸类型和添加量及调酸方法等角度,对豆奶的稳定性和风味进行了初探。  相似文献   

Field bean (Phaseolus vulgaris L.) cultivar identification by electrophoregrams of cotyledon storage proteins     

A. Hussain  H. Ramirez  W. Bushuk  W. Roca 《Euphytica》1986,35(3):729-732

Summary Electrophoretic procedures were developed for seed proteins which can discriminate cultivars of field beans. Proteins were extracted from seven varieties and the extracts were analysed using acid and SDS polyacrylamide gel electrophoresis. Electrophoregrams are presented to illustrate the results that can be obtained with the methods described. Results indicate that sufficient variation is present among the seven cultivars examined to afford unambiguous discrimation and identification of the cultivars. Banding patterns were stable for each genotype.Joint publication of the Department of Plant Science, University of Manitoba (No. 747) and Centro Internacional de Agricultural Tropical-CIAT.  相似文献   

Molecular markers and allelic relationships of anthracnose resistance gene cluster B4 in common bean     

Belén?Méndez-Vigo  Cristina?Rodríguez-Suárez  Astrid?Pa?eda  Juan?José?Ferreira  Ramón?GiraldezEmail author 《Euphytica》2005,141(3):237-245

Angular leaf spot is one of the major diseases of the common bean. The extensive genetic variability of this pathogen requires the constant development of new resistant cultivars. Different sources of resistance have been identified and characterized. For the State of Minas Gerais, Brazil, four main resistance sources were found: Mexico 54, AND 277, MAR 2 and Cornell 49-242. Independent characterization of these genotypes demonstrates that resistance in all four sources is dominant and monogenic. However, there are no studies on the relationship and independence of these genes. In the present work, allelism tests were carried out to understand the relationship among the resistance genes present in these four resistance sources. The data revealed a much higher complexity in the resistance inheritance of these genes than previously reported. It was demonstrated that Cornell 49-242 possesses a dominant gene (Phg-3); Mexico 54 possesses three genes, denominated Phg-2, Phg-5 and Phg-6. In MAR 2, two genes were found, one independent designated Phg-4 and the other, an allelic form of Phg-5, denominated of Phg-5². Allelic forms were also found in AND 277, Phg-2², Phg-3² and Phg-4². These results have special importance for breeding programs aiming to pyramid resistance genes.  相似文献   

Variability and selection for morphological bean traits in wild cocoa trees (<Emphasis Type="Italic">Theobroma cacao</Emphasis> L.) from French Guiana     

Ph.?LachenaudEmail author  G.?Oliver 《Genetic Resources and Crop Evolution》2005,52(3):225-231

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Subject Index     

《Journal of Agronomy and Crop Science》2002,188(6):no-no

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不同比例保水剂对干旱胁迫下红小豆幼苗生长的影响     

张思雨  李科  郭亚宁  王富刚 《陕西农业科学》2022,(11):31-36

为找出干旱胁迫下适宜红小豆幼苗生长的最适保水剂拌土比例,进而为种植红小豆提供理论依据,试验采用盆栽试验的方法,以陕北红小豆为试验材料,根据保水剂不同拌土比例,设置了7个试验处理,分别为0（CK）、0.5%、1.0%、1.5%、2.0%、2.5%和 3.0%,每个处理重复4次。前期正常管理,每盆加入相同量的水,在红小豆幼苗长到两叶一心时,最后一次浇透水,自然干旱12 d后测定红小豆幼苗的生长和生理生化指标,结果表明:在相同灌水量和相同干旱胁迫时间下,添加保水剂能够有效提高红小豆幼苗株高、茎粗、侧根数、最大根长的增加,尤其在保水剂拌土比例为1.5%时促进作用最强;随保水剂拌土比例的增加,除丙二醛（MDA）含量呈现先下降后上升趋势外,超氧化物歧化酶（SOD）、过氧化物酶（POD）、根系活力、叶绿素（Chl）、叶片相对含水量（RWC）均呈现出先上升后下降的趋势,且在保水剂拌土比例为1.5%时,其生理生化指标达到最大值。保水剂拌土比例为1.5%时,对红小豆幼苗期的生长效果最好。  相似文献