EMS对不同大豆品种M_2代农艺性状的影响

Effects of the Main Agronomic Characters of the Different Soybean Varieties Induced by EMS

为了明确甲基磺酸乙酯(EMS)对不同大豆品种的诱变效果。利用0.5%EMS溶液处理4个大豆品种种子,对M2代主要农艺性状的遗传变异进行分析。结果表明:各品种的农艺性状均发生一定程度的变异,分枝数的变异系数最大,其次为单株粒数、单株荚数和单株粒重,而株高和主茎节数的变异系数较小,但在早熟品种当中这些变异大多达到显著水平,而在晚熟品种中均未达显著水平。从熟期的变异来看,各品种都诱变出早熟或晚熟的变异株,总的熟期变异株比例达43.1%,且早熟突变比例(24.6%)大于晚熟突变(18.5%),但在早熟品种中无论是早熟突变还是晚熟突变的比例都大于晚熟品种。

To determine the methyl sulfonic acid ethyl ester （EMS） different varieties of soybean of mutation effect, four soybean varieties were treated by 0.5% EMS solution, and genetic variations of the main agronomic characters in M2 were analyzed. The results were that each variety agronomic characters all happened some degree of variation, among the characters of M2, the genetic variation coefficient of branches were maximum, seeds per plant ,pods per plant and seed weight per plant were medium , plant height and main stem nodes were minimum. But in the early mature varieties these variation was significant, and not in the late. Each variety happened the early or the late mutants, the proportion of the total mutant plants was 43.1%, and the proportion of the early mutants （24.6%） was large than the late （18.5%）, but in the early mature varieties whether the proportions of the early or the late mutants were greater than the late.