METHODS OF EVALUATION FOR PREHARVEST SPROUTING RESISTANCE IN WHEAT BREEDING PROGRAMS
METHODS OF EVALUATION FOR PREHARVEST SPROUTING RESISTANCE IN WHEAT BREEDING PROGRAMS
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小麦育种计划中收获前发芽抗性的评价方法
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
R. L. Obendorf
中科院分区：
文献类型：
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作者：
A. Paterson;M. Sorrells;R. L. Obendorf
成熟的小麦（Triticum spp.）籽粒受到高湿度的影响通常会导致收获前发芽受损。这里描述的实验试图评估两种测量收获前发芽敏感性的方法，并确定这些方法的环境敏感性，用于选择和测试抗发芽小麦基因型。通过对完整穗的人工润湿以及连续 3 年对纽约州伊萨卡附近四个地点的脱粒种子进行发芽测试，测量了八个六倍体小麦（Triticum aestivum L. em Thell）品系的收获前发芽情况。基因型和非遗传效应的相对大小在实验过程中发生变化。在最佳测量时间，基因型占表型变异的 40% 以上，另外 20% 归因于环境和相互作用。当表型基于第 4 天的发芽率或第 6 天的穗发芽评分时，非遗传因素的影响很小。之前的储存技术...
Mature wheat (Triticum spp.) kernels subjected to high moisture often incur preharvest sprouting damage. The experiments described here sought to evaluate two methods of measuring preharvest sprouting susceptibility, and to determine the environmental sensitivity of the methods, for use in selection and testing of sprouting-resistant wheat genotypes. Preharvest sprouting of eight hexaploid wheat (Triticum aestivum L. em Thell) lines was measured by artificial wetting of intact spikes, and by germination tests on threshed seed from each of four location near Ithaca, N. Y., in 3 consecutive years. The relative size of genotypic and nongenetic effects varied over the course of the experiments. At optimal measurement times, genotype accounted for over 40% of phenotypic variation, with another 20% attributed to environment and interactions. Effects of nongenetic factors were minimal when phenotypes were based on germination percent at day 4 or spike sprouting score at day 6. A storage technique previously repo...