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以四个杂交组合为材料,对杂交后代采用系谱法、混合个体法,摘荚法,按成熟期早、中、晚混合选择法及按2.06及1.28两个选择强度进行选择处理,并对其入选后代的株高等农艺性状进行变异系数、入选品系的产量进行方差分析以及不同选择强度下入选品系几种农艺性状的相对遗传进度进行分析。经1976—1981年研究结果表明:各种选择处理的F_4代株高变异系数,除摘荚法稍高外(13.08％),其余各处理入选后代间差异很小(7.12％—10.38％)。1979—1981年对各入选品系的产量进行方差分析,结果,选择处理间产量差异极不显著(F值<1)。按不同选择强度选择,入选后代的几种农艺性状相对遗传进度有较大差异:按5％比例选择(选择强度为2.06)入选后代的相对遗传进度均较按25％比例选择(选择强度为1.28)为高。
Four hybrid combinations were used as materials, and the hybrid progenies were selected by the method of genealogy, mixed individual and pod picking according to the hybrid selection method of early, middle and late maturity and the selection intensities of 2.06 and 1.28, The coefficient of variation of the higher agronomic traits of the selected progeny were analyzed, the yield of the selected lines was analyzed by variance analysis and the relative genetic progress of several agronomic traits of the selected lines under different selection intensities. The results of 1976-1981 showed that the coefficients of variation (CV) of the F_4 plants treated with various treatments were slightly higher (13.08%) except for the slightly higher pods (7.12% -10.38%). An analysis of variance from 1979 to 1981 showed that there was no significant difference in yield between selected treatments (F value <1). The relative genetic progress of several selected agronomic traits of the selected progeny varied greatly depending on the selection intensity: the relative genetic progress of selected progeny at the 5% scale (selection intensity 2.06) was more than 25% (the selection intensity was 1.28 ) Is high.