摘要
以台中６５及其等基因Ｆ１不育系为遗传测验种，测定了栽培稻（ＯｒｙｚａｓａｔｉｖａＬ．）４个籼型品种和１０个粳型品种在Ｓ－Ｅ２和Ｓ－Ｅ５基因座上的Ｆ１花粉不育基因型和分化度。结果表明，在这两个基因座上，籼型品种和粳型品种分别带有高频率、高分化度的Ｓｉ和Ｓｊ基因。试验结果支持了单基因座孢子体——配子体互作模式对杂种不育性的解释，并为栽培稻籼粳亚种的分类提供了新的依据。
Used Taichung 65 and its isogenic F1-sterile lines as materal genetic testers,the genotype and differentiation degree of F1 pollen sterile alleles at S-E2 and S-E5 loci sets among 4 hsien and 10 keng varieties of cultivated rice(Oryza sativa L.) were tested.The results showed that hsien and keng varieties had respectively high frequency and differentiation degree of Si and Sj genes at the two loci sets。The results supported the hypothesis of“one locus sporo-gametophytic interaction model”about the hybrid sterility,and provided new base for the classification of varieties between subsp.hsien and subsp.keng in cultivated rice.
出处
《华南农业大学学报》
CAS
CSCD
1994年第4期67-71,共5页
Journal of South China Agricultural University
关键词
籼粳杂种
花粉不育性等位基因
基因型和分化度
hybrid between hsien and keng varieties
pollen sterile allele
genotype and differentiation degree
