甲基磺酸乙脂诱发大豆高蛋白突变系的遗传与选择效果

Inheritance and Selection Effect of High-protein Soybean Mutant Lines Induced by EMS

应用0.8%甲基磺酸乙脂(EMS)处理冀豆1号及冀豆6号大豆种子后获得突变体,对其M_2有关性状的相关分析结果表明,子粒蛋白质含量与脂肪含量呈显著负相关;蛋白质含量与株高、百粒重、生育日数、开花期呈显著正相关,而与粒茎比呈显著负相关.M_2与M_3间子粒蛋白质含量的相关值达显著水平.从M_2起累代选择子粒蛋白质含量高的变异株,所选出的突变系的子粒蛋白质含量比原品种提高2.0%～3.0%.

The mutants were induced from seeds of soybean cultivars Jidou 1 and Jidou 6 with 0. 8% ethyl methane sulphonate (EMS),and the related characters of their M2 generations were analysed. The results showed that the protein content negatively correlated with the oil content, it positively correlated with the plant height, 1000-seeds-weight, days of growing stage, days of flowering season, but negatively correlated with the ratio of seed weight to stem weight. The relation values of grain protein content in M2 and M3 presented significant variation. The mutant strain in which the grain protein content was high were selected from M2 to M4 generations. The grain protein content in the mutant lines selected was higher than that in the original varieties by 2, 0%-3. 0% .