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1.
直接干燥法测定粮食水分的条件优化 总被引：1，自引：0，他引：1
研究了影响直接干燥法测定粮食水分测定结果的因素,优化了测定条件。采用105℃恒质法对烘盒规格、烘干时间、烘盒个数及烘箱温度等参数进行比较,结果表明:高、低两种水分的小麦采用4.5 cm规格的烘盒,其烘干效果最佳;低水分小麦烘干4h后恒重,高水分小麦烘干4.5 h后恒重;烘盒个数以不超过20个为宜;95℃~110℃下测定结果的精密度差异不显著,但水分测定结果随烘箱温度增大而升高。 相似文献
2.
在冬春季节利用机械通风系统,布置合理的通风网络,对新收获的超高水分稻谷,采取2次通风的方法进行降水试验,收到了良好的效果.在仓外对堆高3 m左右、水分17.0%～17.8%的晚粳稻谷,经过120 h有效通风,将稻谷的水分降到15.2%～15.8%（平均下降2%）.然后将稻谷转入仓内,经过140 h的有效通风,将水分降到14.5%～15.0%（平均下降0.7%）,使收购入库的高水分晚粳稻谷达到安全储存的目的,节省了高水分晚粳稻谷进行整晒或烘干的费用,提高了企业效益. 相似文献
3.
传统的烘干技术,粮食烘干过程中水分很难准确控制,人工调节设备,存在控制滞后、调节不准确、人员劳动量大等问题,烘出的粮食水分波动较大。中央储备粮哈尔滨直属库的烘干机引进安装了DM510E粮食烘干水分智能控制系统,经过一个烘 相似文献
4.
通过对120℃烘干温度条件下,不同烘干时间测定的小麦、玉米、稻谷水分数据,与GB 5497-85中105℃恒重法及定温定时法测定结果相比较,探讨粮食水分快速、实用、简便、经济的测定方法。试验表明:120℃烘干温度条件下,烘干30min、40min、1h的测定数据在90%置信区间内与GB 5497-85中的105℃恒重法比较,其准确度、精确度无显著差异,其中烘干30min是最经济、最易控制的测定方法。试验省去了空置称量盒恒重过程,用烘干后倒掉样品的称重盒重量代替,缩短了测定时间。试验为粮食水分便捷测定提供了新方法。 相似文献
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对粮食烘干温度和粮食储藏温度对马拉硫磷粉剂和乳剂的降解作用进行了测定.烘干前马拉硫磷施于湿玉米(水分19%～20%),或烘干后施于热的(71或48℃),或冷却的(21℃)水分为12%的玉米.在21、48和71℃三种温度下,玉米的最终水分都为12%.对这几种处理玉米的储藏温度的影响进行了评价,即在3℃下储藏4个月,以后在16℃下储藏7个月.烘干前施于玉米的马拉硫磷经烘干过程明显降解,降解程度根据烘 相似文献
8.
介绍一种小型粮食烘干机的原理和结构,对其烘干稻谷的性能进行了分析.结果表明,在高温高湿条件下,SRR-1粮食烘干机经过大约100 h的连续烘干作业,可将1 t高水分稻谷从29%降至14%左右,降水能力约为2.1 kg/h.稻谷烘后品质良好,降水均匀.该型号烘干机具有投资小,运行费用低,操作简单,维修方便的特点,适合农村小规模种粮农户的粮食烘干作业. 相似文献
9.
赵素侠 《粮油仓储科技通讯》2014,(3):33-35
正近年来,晚粳稻储存量逐步增加,而晚粳稻入库时气温较低,无法通过晾晒降低至安全水分,烘干费用又较高,成为高水分晚粳稻过夏的新挑战和新难点。我库在晚粳稻储藏期间采用空调控制仓温,内环流调节粮温等储粮方法,探讨出一套可行的高水分晚粳稻安全度夏的技术方案。1技术创新、应用随着晚粳稻收购市场的日益变化,晚粳稻入库质量的总体特征是:水分偏高、杂质超标。尽管我库平房仓屋顶增设了阁楼式吊顶隔热保温,但由于 相似文献
10.
我省是国家商品粮基地,每年收购大量高水分玉米,烘后粮已占总量的70%以上.由于粮食经烘干后其生活力极低,应用钢板仓储存极易发热霉变,因而用钢板仓储藏烘后玉米安全度夏是我省亟待解决的问题.为此,我们在已通过省级鉴定的“钢板仓通风储藏玉米”[《粮食储藏》1991(6)]的基础上,又进行了烘后玉米钢板仓通风储藏试验. 相似文献
11.
G. H. Kroon 《Euphytica》1994,76(1-2):125-125
Summary
K x vadensis is a hybrid of K. blossfeldiana and K. marmorata obtained after doubling the number of chromosomes. 相似文献
12.
Jens Jensen 《Euphytica》1979,28(1):47-56
Summary The high-lysine gene in Risø mutant 1508 conditions an increased lysine content in the endosperm via a changed protein composition, a decreased seed size, and several other characters of the seed. The designation lys3a, lys3b, and lys3c, is proposed for the allelic high-lysine genes in three Risø mutants, nos 1508, 18, and 19. Linkage studies with translocations locate the lys3 locus in the centromere region of chromosome 7. A linkage study involving the loci lys3 and ddt (resistance to DDT) together with the marker loci fs (fragile stem), s (short rachilla hairs), and r (smooth awn) show that the order of the five loci on chromosome 7 from the long to the short chromosome arm is r, s, fs, lys3, ddt. The distance from locus r to locus ddt is about 100 centimorgans. 相似文献
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Hongyan WEI Jian ZHOU Jinguang LU Jingzheng SONG Qiongxi YU Zhihong JIANG 《Medicinal Plant》2019,(6):27-29
[Objectives]This study aimed to establish a QAMS(quantitative analysis of multi-components by single-marker)method for simultaneous determination of four phenol... 相似文献
14.
Summary Avoidance of rust fungi that was based on poor appressorium induction was previously found in Hordeum chilense. In the present study 95 accessions of Triticeae were screened for avoidance of Puccinia hordei. The percentage of appressorium formation per germinated spore ranged from 6 to 90%. On none of the 41 accessions of Aegilops, Agropyron, Elymus, Secale, Thinopyrum or Triticum studied was the rate of appressorium formation lower than 25%. Lower rates of appressorium formation were, however, found on accessions of wild barley species Hordeum brachyantherum, H. marinum, H. parodii and H. secalinum. Its implications in cereal breeding are discussed. 相似文献
15.
D. A. Bond G. J. Jellis G. G. Rowland J. Le Guen L. D. Robertson S. A. Khalil L. Li-Juan 《Euphytica》1993,73(1-2):151-166
Progress is being made, mainly by ICARDA but also elsewhere, in breeding for resistance to Botrytis, AScochyta, Uromyces, and Orobanche; and some lines have resistance to more than one pathogen. The strategy is to extend multiple resistance but also to seek new and durable forms of resistance. Internationally coordinated programs are needed to maintain the momentum of this work.Tolerance of abiotic stresses leads to types suited to dry or cold environments rather than broad adaptability, but in this cross-pollinated species, the more hybrid vigor expressed by a cultivar, the more it is likely to tolerate various stresses. 相似文献
16.
Chunli TANG Fengxian ZHAO Hongxia CHEN Jiabao MA Jiangcun WEI Meiyan QIU Zhen XIE 《Medicinal Plant》2019,(6):60-65
[Objectives]To optimize the water extraction process of Chinese Herbal Compound Man Gan Ning and establish a method for its extraction and content determination... 相似文献
17.
Mohammed Riyazaddin Polavarapu B. Kavi Kishor Are Ashok Kumar Belum V. S. Reddy Rajendra S. Munghate Hari C. Sharma 《Plant Breeding》2015,134(4):423-436
Sorghum shoot fly, Atherigona soccata, is one of the important pests of postrainy season sorghums. Of the 90 sorghum genotypes evaluated for resistance to this pest, RHRB 12, ICSV 713, 25026, 93046 and 25027, IS 33844‐5, Giddi Maldandi and RVRT 3 exhibited resistance in postrainy season, while ICSB 463, Phule Anuradha, RHRB 19, Parbhani Moti, ICSV 705, PS 35805, IS 5480, 5622, 17726, 18368 and 34722, RVRT 1, ICSR 93031 and Dagidi Solapur showed resistance in rainy season, suggesting season‐specific expression of resistance to A. soccata. ICSB 461, ICSB 463, Phule Yasodha, M 35‐1, ICSV 700, 711, 25010, 25019 and 93089, IS 18662, Phule Vasudha, IS 18551 and 33844‐5 and Barsizoot had fewer deadhearts than plants with eggs across seasons, suggesting antibiosis as one of the resistance mechanism. Five genotypes exhibited resistance with high grain yield across seasons. Correlation, path and stepwise regression analyses indicated that leaf glossiness, seedling vigour, trichome density, oviposition and leaf sheath pigmentation were associated with the expression of resistance/susceptibility to shoot fly, and these can be used as marker traits to select and develop shoot fly‐resistant sorghums. 相似文献
18.
E. Keep 《Euphytica》1986,35(3):843-855
Summary Cytoplasmic male sterility (cms) is described in the F1 hybrids Ribes × carrierei (R. glutinosum albidum × R. nigrum) and R. sanguineum × R. nigrum. In backcrosses to R. nigrum, progenies with R. glutinosum cytoplasm were either all male sterile, or segregated for full male fertility (F) and complete (S) and partial (I) male sterility. Ratios of F:I+S suggested that two linked genes controlled cms, F plants being dominant for one (Rf
1) and recessive for the other (Rf
2).Segregation for cms in relation to three linded genes, Ce (resistance to the gall mite, Cecidophyopsis ribes), Sph
3(resistance to American gooseberry mildew, Sphaerotheca mors-uvae) and Lf
1(one of two dominant additive genes controlling early season leafing out) indicated that Rf
1and Rf
2were in this linkage group. The gene order and approximate crossover values appeared to be: % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXafv3ySLgzGmvETj2BSbqef0uAJj3BZ9Mz0bYu% H52CGmvzYLMzaerbd9wDYLwzYbItLDharqqr1ngBPrgifHhDYfgasa% acOqpw0xe9v8qqaqFD0xXdHaVhbbf9v8qqaqFr0xc9pk0xbba9q8Wq% Ffea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qqQ8frFve9Fve9Ff0dme% aabaqaciGacaGaamqadaabaeaafaaakeaacaWGdbGaamyzamaamaaa% baGaaiiiaiaacccacaGGWaGaaiOlaiaacgdacaGG0aGaaiiiaiaacc% caaaGaaiiiaiaacccacaGGGaGaamOuaiaadAgaliaaigdakmaamaaa% baGaaiiiaiaacccacaGGGaGaaiiiaiaaccdacaGGUaGaaiOmaiaacs% dacaGGGaGaaiiiaiaacccacaGGGaGaaiiiaaaacaWGsbGaamOzaSGa% aGOmaOWaaWaaaeaacaGGGaGaaiiiaiaacccacaGGGaGaaiiiaiaacc% cacaGGGaGaaiiiaiaacccaaaGaamitaiaadAgaliaaigdakmaamaaa% baGaaiiiaiaacccacaGGGaGaaiiiaiaacccacaGGGaGaaiiiaiaacc% cacaGGGaGaaiiiaiaacccacaGGGaaaaiaadofacaWGWbGaamiAaSGa% aG4maaaa!6E4D!\[Ce\underline { 0.14 } Rf1\underline { 0.24 } Rf2\underline { } Lf1\underline { } Sph3\]. Crossover values of 0.36 for Ce-Lf
1, and 0.15 for Lf
1-Sph
3were estimated from the relative mean differences in season of leafing out between seedlings dominant and recessive for Ce and Sph
3.It is suggested that competitive disadvantage of lf
1-carrying gametes and/or zygotes at low temperatures may be implicated in the almost invariable deficit of plants dominant for the closely linked mildew resistance allele Sph
3. Poor performance of lf
1- (and possibly lf
2-) carrying gametes and young zygotes during periods of low temperature at flowering might also account for the liability of some late season cultivars and selections to premature fruit drop (running off). 相似文献
19.
[Objectives] To determine the optimum extraction technology for total phenols of leaves in Acanthopanax giraldii Harms.[Methods]The single factor test and ortho... 相似文献
20.
Summary
Hordeum chilense is a wild barley extensively used in wide crosses in the Triticeae. It could be a valuable source of resistance to Fusarium culmorum and Septoria nodorum. Some H. chilense x Triticum spp. amphiploids, named tritordeums, were more resistant than the parental wheat line to these diseases, others were not. Average contents of ergosterol and deoxynivalenol (DON) suggested that resistance to colonization by Fusarium was the highest for Hordeum chilense, followed by tritordeum and wheat in decreasing order. In particular, the H. chilense genotypes H7 and H17 enhanced the wheat resistance to F. culmorum in its tritordeum offsprings. Resistance to S. nodorum in tritordeum was not associated with tall plant height. There is sufficient genetic variation for resistance to F. culmorum and S. nodorum among tritordeum to allow the breeding of lines combining short straw and resistance to both diseases. 相似文献