摘要
以4个籼粳测验种做母本按NCII(4×90)设计配置的360个杂交F1组合为材料,研究亲本的程氏指数差异(ID)、同工酶遗传距离(GD)与杂种F1结实率的关系。结果显示:ID、GD与杂种F1结实率呈极显著负相关(r=-0.540,p<0.01;r=-0.316,p<0.01),但决定系数不高,分别是0.2916、0.0999。ID、GD与F1结实率的相关性受父本和母本影响,其中对非广亲和品种测交F1结实率的预测效果较好,对广亲和品种及南京11的测交F1的预测则无效。因此,在利用ID和GD对水稻杂种F1结实率进行预测时,宜在一定的亲本类型之间进行,ID比GD的预测效果更好。
Three hundred and sixty hybrid F1s from 4 indica (IR36 and Nanjing 11) and japonica (Balila andAkihikara) rice as female parents crossed with the rest male parents were used to study the spikelet fertility inrelation to Cheng's index difference (ID) and to isozyme genetic distance (GD). The results showed that ID and GD significantly negatively correlated with F1 spikelet fertility (r=-0.540, p<0.01; r=-0.316, p<0.01), but thedeterminative coefficient was low, which was 0.2916, 0.0999, respectively. The correlation between F1 spikelet fertility and ID or GD were influenced by both male and female parents. ID and GD were useful for predicting F1 spikelet fertility in varieties of non-wide compatibility, but were not effective for fertility prediction in wide compatiblevarieties and in Nanjing 11. Therefore, ID and GD used for prediction of F1 spikelet fertility are effective only in certain types of rice materials, and ID is more efficient than GD.
出处
《热带亚热带植物学报》
CAS
CSCD
北大核心
2004年第4期337-340,共4页
Journal of Tropical and Subtropical Botany
基金
广东省科技项目(2001A2010105)
中国科学院院长基金(2000-3269)项目资助
