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141.
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143.
对燕麦麸进行细胞级超微细粉碎。对照常规粉碎细粉,用显微观察法对其组织特征以及有效成分溶出特性进行观察。燕麦麸经超微粉碎后,显微镜下观察基本无完整细胞存在;其有效成分溶出特性有明显改变。 相似文献
144.
145.
Lixia Wang Yuan Guan Rongxia Guan Yinghui Li Yansong Ma Zhimin Dong Xian Liu Haiyan Zhang Yueqiang Zhang Zhangxiong Liu Ruzhen Chang Haiming Xu Linhai Li Fanyun Lin Weijiang Luan Zhe Yan Xuecheng Ning Li Zhu Yanhua Cui Rihua Piao Yan Liu Pengying Chen Lijuan Qiu 《Euphytica》2006,151(2):215-223
It is very important to efficiently study and use genetic diversity resources in crop breeding and sustainable agriculture. In this study, different sampling methods and sample sizes were compared in order to optimize the strategies for building a rationally sized core collection of Chinese soybean (Glycine max). The diversity in the core collection captured more than 70% of that in the pre-core collection, no matter what sampling methods were used, at a sampling proportion of 1%. Core collections established with both simple sequence repeat (SSR) marker data and agronomic traits were more representative than those chosen on an independent basis. An optimal sampling method for a soybean core collection was determined, in which strategy ‘S’ (allocating accessions to clusters according to the proportion of square root of the original sample size within each ecotype) was used based on SSR and agronomic data. Curve estimation was used to estimate the allelic richness of the entire Chinese soybean germplasm and a minimum sample size for a core collection, on which a sampling proportion of about 2% was determined to be optimal for a core collection. Further analysis on the core collection with fourteen agronomic traits and allelic constitution at 60 SSR loci suggested that it highly represented the entire collections both on genetic structure and diversity distribution. This core collection would provide an effective platform in proper exploitation of soybean germplasm resources for the study of complex traits and discovering important novel traits for crop genetic development. 相似文献
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147.
通过对管花肉苁蓉种子的特性研究,找出适宜的分选原理来满足其清选要求。对几种常规分选(重力选、气筛分选和窝眼盘分选)原理进行分析,发现以上分选原理都不能满足该种子清选的要求,进一步分析试验,研制出适合管花肉苁蓉种子特性的清选机。 相似文献
148.
水肥耦合对当归产量和品质的影响效应研究 总被引:1,自引:2,他引:1
探索水肥耦合对当归品质和产量的影响效应,为当归GAP规范化种植中的水肥调控提供理论依据。采用水肥双因素试验,通过二元二次多项式拟合灌水量、施肥量与当归产量和主要品质指标(阿魏酸含量)的关系,建立影响效应模型,并对其进行检验分析和相关性分析。结果表明:在灌水一定的情况下,随着施肥量的增加,当归的产量先增加后减少;在施肥一定情况下,随着灌水量的增加,当归的产量也是先增加后减少,当归的最高产量出现在中水中肥区,即灌水量1073.97 m3/hm2,施肥量808.97 kg/hm2,最大产量为15804.36 kg/hm2;在灌水量一定的条件下,随着施肥的增加当归的阿魏酸含量先增加后降低,在施肥量一定的条件下,随着灌水量的增加当归的阿魏酸含量也是先增加后降低,当归的阿魏酸含量最高出现在中高水中高肥区,即灌水量1491.42 m3/hm2,施肥量863.55 kg/hm2,阿魏酸最高含量为2.41 mg/g。合理有效的灌溉施肥使当归达到优质高产。 相似文献
149.
The genetic relationship between popping expansion volume and two yield components in popcorn using unconditional and conditional QTL analysis 总被引:2,自引:0,他引:2
Y. L. Li Y. B. Dong D. Q. Cui Y. Z. Wang Y. Y. Liu M. G. Wei X. H. Li 《Euphytica》2008,162(3):345-351
Popping expansion volume (PEV) is the most important quality trait in popcorn, while its germplasm is inferior to normal dent/flint
corn in yield. In this study, 259 F2:3 families, developed from the cross between a dent corn inbred Dan232 and a popcorn inbred N04, were evaluated for their PEV,
grain weight per plant (GWP) and 100-grain weight (100 GW) in two environments. The genetic relationship between PEV and GWP,
and 100 GW on individual gene loci were evaluated using unconditional and conditional QTL mapping methods. In total, five,
one and three unconditional QTL were identified for PEV, GWP, and 100 GW, respectively. The positive alleles of all QTL for
PEV were from N04, while positive alleles of all QTL for GWP and 100 GW were from Dan232. In conditional mapping, one and
two QTL failed to be detected, and all four additional QTL were detected. Nevertheless, three QTL were identified, which controlled
PEV independently from GWP/100 GW. They seemed to be potential candidates in popcorn breeding to increase PEV without decreasing
GWP/100 GW. The results suggested that for significantly correlated traits, the conditional QTL mapping method could be used
to dissect the genetic interrelationship between traits at the level of individual QTL, as well as reveal additional QTL that
were undetectable by unconditional mapping. 相似文献
150.
本研究以小麦骨干亲本矮孟牛及其33个衍生品种(系)为材料,利用低分子量(LMW)麦谷蛋白Glu-B3位点的STS-PCR标记、醇溶蛋白Gli-B1位点的SSR标记和黑麦碱SEC-1b位点的STS-PCR标记进行复合PCR,检测1BL/IRS易位.结果表明,矮孟牛Ⅱ、Ⅳ、Ⅴ、Ⅵ和Ⅶ型含有1BL/1RS染色体,矮孟牛Ⅰ和Ⅲ型不含1BL/1RS;在矮孟牛的33个衍生后代中,25个含1BL/1RS,其余8个则不含1BL/1RS.利用A-PAGE技术对上述材料进行了黑麦碱蛋白的检测,结果与复合PCR一致,两种方法相结合能准确的检测1BL/1RS. 相似文献