水稻叶片的卷曲特性及其遗传分析

应用在构建近等基因系中的3个回交世代的F<,2>群体,在不同年份,不同环境下对水稻卷叶的卷曲特性及遗传规律进行了测定和分析.结果表明,水稻叶片发生卷曲是在第4片叶,但开始发生卷曲的时间是在6叶期,随着叶片数的增加,卷曲度随之增加至最大值;随着稻株叶片生长完成,叶片卷曲度在上三叶中均呈下降趋势,表现为:剑叶>倒二叶>倒三叶,卷曲度的降幅也表现相同趋势;叶基角随着生育进程的加大、叶片卷曲度的不断减小而增加,但叶基角的增幅与叶片卷曲度不呈简单的反比关系;该卷叶性状是由1对主效基因控制的不完全显性遗传.

Analysis on Curl Characteristics and Hereditary of Rice Leaf

The F2 populations of three backcross generations in building the near-isogenic lines(NILs)were used to measure and analyze on rice leaf curl characteristics and inheritance in different years and different environments.The results showed that rice leaf began to curl in the forth leaf,but the rolling leaf emerged at the 6th leaves stage.With the increasing of leaves number,rolling degree increased to the maximum,leaf rolling degree of the above three leaves decreased when the leaves growth was completed.The...