离子束转化的小麦变异系叶片变异特点分析

Leaf Traits' Analysis of Offspring Obtained by Transferring Exogenous DNA into Wheat Mediated by Ion Beam

以离子束介导转化选育到的一批有价值小麦变异系为材料,对旗叶和倒二叶的变异特点进行深入考察和分析。结果表明,无论在灌水还是雨养情况下,变异材料的旗叶长、旗叶宽、倒二叶长、倒二叶宽与受体材料相比都发生了明显变化并达显著水平;多个变异材料叶片性状的旱/水比值高于参照值,说明其叶片性状在旱、水2种情况下的表现相当,稳定性好。其中以编号4342变异系表现最为突出,叶片性状的4个指标的旱/水比值均好于参照,说明其稳定性在所有变异材料中最好。

Some valuable wheat mutants were obtained by transferring exogenous DNA into wheat mediated by ion beam transformation. The variation features of the lear traits of the mutants were analysed. The result shows that the length and width of both the flag leaf and the 2nd leaf change obviously compared with control and reach a significant level no matter rain-fed and irrigated conditions. The dry/water ratio of the leaf traits of many mutants is higher than the reference value, which states that their leaf traits under drought condition is the same as irrigated condition＇s and the stability in both conditions is quite good. And among all of the mutants stands out a variant line whose number is 4342,for the dry/ water ratios of the four index of its leaf traits are preferable to the reference ,indicating its stability is the best in all the mutants. The results provide important bases for further improvement and utilization of the mutants.