小黑麦饲草品质性状的基因效应分析  

Analysis of Gene Effects of the Herbage Quality Traits in Triticale

作　　者：王瑞清[1] 曹连莆[2] 李诚[2] 邵红雨[3] 李春艳[2] 

机构地区：[1]塔里木大学植物科技学院,新疆阿拉尔843300 [2]石河子大学农学院,新疆石河子832003 [3]新疆农科院粮作所,乌鲁木齐830091

出　　处：《新疆农业科学》2009年第2期258-261,共4页Xinjiang Agricultural Sciences

基　　金：国家"863"计划子专题"优质专用饲有和小黑麦的选育"(2001AA241162)

摘　　要：为了对小黑麦饲草品质性状进行深入研究,利用Griffing完全双列杂交方法Ⅱ,采用加性-显性模型对6个小黑麦亲本的粗蛋白、粗脂肪、粗灰分、粗纤维和无氮浸出物5个饲草品质性状的基因效应和遗传组成进行了研究。结果表明,粗蛋白的遗传受加性、显性和上位性及环境效应控制,粗纤维、粗脂肪和无氮浸出物的遗传主要受显性效应控制,粗灰分的遗传受加性和显性效应共同控制。饲草品质性状中除无氮浸出物外其它性状均表现出明显的自交衰退现象。The genic effects and genetic composition of 6 hexaploid triticale cnitivars were studied for crude protein content, crude ash, crude fat, crude fiber and nitrogen- free extract by Griffing scomplete diall crossing model Ⅱ and additive - dominant model. The result indicated that crude protein content was controlled by additive and no- additive effects, and crude fat, crude fiber and nitrogen- free extract were controlled by dominant effects, whereas crude ash was controlled additive and dominant effects. In addition,dominant effects of per parent showed that the most herbage quality trait had obvious selfing depression.

关 键 词：小黑麦 饲草品质性状 基因效应 加性-显性遗传模型 

分 类 号：S512.4[农业科学—作物学]