杂交稻米垩白的遗传及相关研究  

Inheritance and Cornelation Study on Chalkiness of Hybrid Rice

作　　者：谭震波[1] 况浩池[1] 阴国大 陈国良 左永树 赵甘霖 

机构地区：[1]四川省农科院水稻高粱研究所,泸洲646000

出　　处：《中国农业大学学报》1993年第S3期75-78,共4页Journal of China Agricultural University

基　　金：四川省科委青年科技基金"优质水稻不育系遗传改良研究"的部分内容

摘　　要：杂交稻米垩白面积及粒率偏高,该二性状主要是由基因加性效应控制的数量性状。垩白 sca 表现较小的杂交组合均包含 gca 表现较小的不育系和恢复系,且 gi(p_1)+gi(p_2)与杂交稻米垩白面积和粒率之间存在极显著的直线相关关系。千粒重、粒长和出糙率对垩白面积产生显著的直接效应,长宽比和整精米率对垩白面积产生显著的负的直接效应,垩白粒率对垩白面积的作用不显著。4 A lines,4 R lines and 16 hybrids obtained through 4×4 incomplete diallel set were used for this study.Chalkiness in hybrids is a quantitative character controlled by additive gene effect.The poor sca of cross combinations involved both parents which were poor gca for chalkiness in hybrids.there existed signifi- cantly linear correlation between g_i(P_1)+g_j(P_2) and means of chalkiness of hybrids.The results of path anal- ysis indicated that 1000-grain weight,grain lengh and brown rice rate had significantly direct influence whereas lengh/width and head rice recovery had significantly negative direct influence on chalkiness area of grain.

关 键 词：垩白 杂交水稻 不育系 恢复系 

分 类 号：S[农业科学]