一种水稻分蘖突变体的初步分析(简报)

PRELIMINARY ANALYSIS OF A RICE TILLER MUTANT

通过EMS(甲基磺酸乙酯,ethylmethanesulfonate)诱变处理籼稻丰矮占5号的种子,在M2代中分离到一株少分蘖突变体,命名为ret5-5(reducedtillermutant)。植株表现为不分蘖,自交所得M3、M4和M5代植株表现为0-2个分蘖,而原正常品种FAZ-5同期平均分蘖数为8.2。突变体与FAZ-5的杂交结果显示该突变表型为隐性突变。在F1代自交所得F2和F3代植株出现性状分离,突变可能涉及2个或2个以上的基因。

The seedsof Indica rice(Oryza sativa)varietyFAZ-5weretreatedwithethylmethane sulfonate(EMS)for mutationbreeding.A reducedtillmutant(ret5-5),whichexhibitedno tiller,was obtainedfromM 2 population.TheselfedprogeniesM 3 ,M 4 andM 5 showed0-2tillers,whileitsparents,FAZ-5,hadaverage8.2or moretillersinthecorrespondingperiod.Themutantret5-5afterbeingcrossed withFAZ-5indicatesthatit is a recessivemutantandmorethanone geneweremutatedaftertheEMS treatment.