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大豆自然异交率非常低,对晋大62×诱处4号杂交亲本及后代的产量性状进行分析,目的是对突变育种与杂交育种相结合的后代群体进行分析,并确定其中的高产品系。利用Excel、SPSS软件对后代的21个农艺性状进行了产量因子的主成分分析,从而概括出与单株产量显著相关的一些性状。结果表明:利用诱变材料做亲本配制杂交组合,其后代群体变异类型丰富,遗传基础广,基因重组类型多,在72个分析群体(包括2个亲本)中有7个品系是高产品系,50个中产品系,15个低产品系。杂交后代的高产品种的选育应选择单株荚数、有效分枝数、主茎粗、单株粒数、百粒重、主茎荚数等均具有明显优势的后代材料,以提高大豆育种工作的效率,尽早选育出符合育种目标的优良品种。
The natural rate of outgrowth of soybean was very low. The yield traits of parents and offsprings of Jinxian 62 × Induction 4 were analyzed in order to analyze the offspring populations combining mutation breeding and crossbreeding, and to identify the high yield lines . The principal component analysis of yield factors of 21 agronomic traits of offspring was carried out by using Excel and SPSS software to summarize some traits significantly correlated with the yield per plant. The results showed that the mutagenic material used as the parent of the hybrids was rich in variation types, wide genetic base and more types of genetic recombination. Seven out of 72 analysis groups (including two parents) were high-yielding lines, 50 middle product lines and 15 low product lines. Breeding of high-yielding varieties of hybrid progeny should choose the number of pods per plant, the number of effective branches, the main stem diameter, the number of grains per plant, the weight of 100 seeds, the number of main stem pod has obvious advantages of progeny materials to improve soybean breeding The efficiency of work, early breeding of good varieties in line with breeding goals.