籼、粳、中间型水稻杂种F_1的生物优势、经济优势与RFLP的关系研究  

Relationship between RFLPs and Hetorosis of Hybrids among Indica, Intermediate and Japonica Type Rice

作　　者：钱前[1] 熊振民[1] 闵绍楷[1] 朱立煌[2] 

机构地区：[1]中国水稻研究所,浙江杭州310006 [2]中国科学院遗传研究所,北京100101

出　　处：《作物学报》1998年第1期74-77,共4页Acta Agronomica Sinica

摘　　要：对典型籼、粳稻南京11、金南凤突变体和中间型品种Bellemont相互杂交形成的三种F_1杂种优势及三者之间的RFLP进行了系统分析,结果表明:F_1杂种生物学优势存在着籼/粳>籼/中间型>粳/中间型趋势,经济优势则为籼/中间型>粳/中间型>籼/粳.而多态性是籼/粳(73.3%)>籼/中间型(67.9%)>粳/中间型(32.8%),并且各组合的12条染色体多态性程度也有差异,因此,多态性与生物优势趋于一致,但经济优势却与多态性及亲和性基因有关.The biological and economical heterosis and RFLPs of hybrids among Nanjing ll(indica), Kinmaze mutant(japonica) and Bellemont (intermedium)were investigated. The results indicated that the biological heterosis of F1 hybrid was that of indica/japonica>indica/inter-mdium>japonica/intermedium. But the economical heterosis was that of indica/intermdium> japonica/intermedium>indica/japonica. RFLPs analysis showed that the polymorphisms of indi-ca/japonica(73. 3%)>indica/intermedium(67. 9%)>japonica/intermedium(32. 8%). RFLPs also varied with chromosomes in each combination. Therefore the biological heterosis of F1 hybrid was corresponding to RFLPs, and the economical heterosis related to the combination of polymorphisms and the wild compatibility gene.

关 键 词：水稻 杂种生物优势 经济优势 RFLP 

分 类 号：S511.035.1[农业科学—作物学]