杂交水稻亲本对F_2米质性状的影响  

Effect of hybrid rice parents on F2 rice quality

作　　者：周勇[1] 汪莲爱[1] 宋国清[1] 居超明[1] 廖贡献[1] 徐国成[1] 

机构地区：[1]湖北大学生命科学系,湖北省农科院测试中心

出　　处：《湖北农业科学》1996年第3期15-18,共4页Hubei Agricultural Sciences

基　　金：湖北省科委资助课题

摘　　要：１０个杂交早稻的品质有明显的差异。整精米率与碎米率、长宽比和垩白面积呈显著负相关，碎米率与粒宽和垩白面积呈显著正相关，同父异母亲本配组，Ｆ＿２整精米率随父本整精米率的高低波动；同母异父亲本配组，Ｆ＿２垩白率和垩白面积随母本垩白率的高低和垩白面积的大小波动。整精米率和垩白面积的广义遗传力为６６．７９％机５４．００％，选用透明度好的不育系与整精米率高的恢复系配组，可改善稻米品质。There are significant differences on rice quality in 10 early hybrid rice.The relations of whole pol-ished rice percentage dnrd broken rice percentage, rice grain length/width and chalky area were significantly nega-tive. Broken rice percentage and rice grain width and chalky area had significantly positive correlations. In crosseswhich came from the same father and different mothers,whole polished rice percentage of F2 fluctuated with themale parent; while in crossea which came from the same mother and different fathers, chalkiness and chalky area ofF2 fluctuated with that of the female parents. The broad sense heritability of whole polished rice percentage andchalky area were 66.79% and 54. 00% respectively.Rice grain quality were apparently improved when sterile linewith fine transparency crossed high whole polished rice percentage rerstorer line.

关 键 词：水稻 杂交水稻 亲本 米质性状 遗传力 品质改良 

分 类 号：S511.03[农业科学—作物学]