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对来源不同的9个苦荞品种的开花日数、株高、一级分枝数等9个农艺性状进行了Tukey的多重比较和主成分分析,筛选出性状间有显著差异的6个品种,进行了不完全双列杂交。根据对不完全双列杂交亲本间差异的分析结果,从中筛选出株高、一级分枝数等6个性状有显著遗传性差异的2个品种,测定其分离后代(F2和F3)各农艺性状的遗传模式和遗传相关。在北陸4号和石荞的F4中发现了12个优良单株(早熟、矮秆、高产),并根据苦荞各农艺性状的遗传特性,讨论了筛选优良株系的选拔方法。结果表明,利用杂交育种法筛选优良株系时,首先利用SSD法繁殖至F4,再利用系统育种法来选拔最为有效。
Tukey’s multiple comparisons and principal components analysis were conducted on 9 agronomic traits of 9 different tritary buckwheat cultivars, including flowering days, plant height, and primary branch number. Six cultivars with significant differences in traits were screened out Incomplete double crossing. Based on the analysis of the differences between parents in incomplete diallel crosses, two cultivars with significant differences in six traits, including plant height and number of first-order branches, were screened for their agronomic characters The genetic patterns of traits are genetically related. Twelve excellent plants (early maturity, short stalk, high yield) were found in F4 of Hokuriku 4 and Shikou, and the selection method of selecting excellent lines was discussed according to the genetic characteristics of each agronomic trait of tartary buckwheat. The results showed that the screening of elite lines by crossbreeding method was the first to use the SSD method to propagate to F4, and then the system breeding method was the most effective.