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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (27): 49-52.

所属专题： 油料作物

• 农学 农业基础科学 • 上一篇    下一篇

EMS诱发大豆不同品种M2代与M3代农艺性状变异比较

吴秀红   

  • 收稿日期:2012-03-11 修回日期:2012-05-10 出版日期:2012-09-25 发布日期:2012-09-25

Comparison of Genetic Variations of Agronomic Characteristics of the Different Soybean Varieties in M2 and M3 Induced by EMS

  • Received:2012-03-11 Revised:2012-05-10 Online:2012-09-25 Published:2012-09-25

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摘要：

为了明确甲基磺酸乙酯(EMS)对大豆品种诱变的后代变异情况，利用0.5% EMS溶液处理4个大豆品种种子，对M2、M3代主要农艺性状的遗传变异进行分析比较。结果表明：各世代农艺性状均发生一定程度的变异，与M2代相比，M3代株高、分枝数、单株粒数、单株粒重及百粒重的平均变异系数变小，而主茎节数的平均变异系数变大，单株荚数的变异系数大致相当，然而这种趋势在各品种间却不尽相同；各世代都诱变出早熟或晚熟的变异株，各品种总熟期变异率由高到低M2代为‘黑河43’(0.71%)>‘北豆5’(0.63%)>‘合丰50’(0.57%)>‘合丰55’(0.53%)，M3代为‘北豆5’(0.64%)>‘黑河43’(0.5%)>‘合丰55’(0.25%)>‘合丰50’(0.22%)，说明熟期的变异至M3已下降。

关键词: 感染率, 感染率

Abstract:

Four spring soybean varieties were treated by 0.5% EMS (methyl sulfonic acid ethyl ester) solution, and genetic variations of the main agronomic characters in M2 and M3 were analyzed and compared. The results showed that, each generation agronomic characters all happened some degree variation, compared with M2. Among the characters of M3, the average genetic variation coefficient of plant height, branches, seeds per plant, seed weight per plant and 100-seed weight were less, main stem nodes were greater and pods per plant were well-matched, but this trend was different in between varieties. The earlier or the late plants were observed in each generation, the total maturity mutation proportion of M2 and M3 were 43% and 38%, the total maturity mutation proportion of each varieties from high to low was ‘Heihe43’ (0.71%) > ‘Beidou5’ (0.63%) > ‘Hefeng50’ (0.57%) > ‘Hefeng55’ (0.53%) in M2 and ‘Beidou5’ (0.64%) > ‘Heihe43’ (0.5%) > ‘Hefeng55’ (0.25%) > ‘Hefeng50’ (0.22%) in M3 , this showed the variation that maturity mutation proportion to M3 had reduced.