YAG与He—Ne激光处理籼稻恢复系干种子的诱变育种效果的研究

Studies on the Mutagenic Effect of Laser Treatment on R Line of Xian Rice (indica)

用ＹＡＧ、Ｈｅ—Ｎｅ激光处理籼稻恢复系恢４８—２干种子，统计了其当代生物学效应，Ｌ２代的突变频率，几种主要性状的变异系数及广义遗传力，Ｌ２代各处理选１０个突变株与多个不育系配组，表现熟期较早，综合性状较好的组合数，ＹＡＧ激光处理的高于Ｈｅ—Ｎｅ激光处理的，并选育出了一个较好的新的恢复系—恢４１。

YAG and He—Ne laser were used to illuminate the restorer line of Xian rice(indica) Hui48-2.Genetic analysis was made on the L 1 gerenation biological effect, L 2 gerenation's mutant frequency, variation coefficient and broad-sense heritability of some major characters. Each 10 mutant plants screened from the L 2 generation by the two treatments were crossed with quite a few male sterile lines of rice(Ms line). Statistical results indicated that in comparisom with the He—Ne treatment more cross combinations with early maturity and better comprehensive characters occured from the YAG treatment. And a new improving R line Fui 41 was developed from it.