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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (10): 128-132.

所属专题： 玉米

• 农学 农业基础科学 • 上一篇    下一篇

普通×爆裂玉米RILs群体籽粒不同发育时期品质性状及其相关分析

杨美丽,李玉玲,崔庆新,李俊周   

  • 收稿日期:2009-12-08 修回日期:2009-12-18 出版日期:2010-05-20 发布日期:2010-05-20

Analysis of Grain Nutritional Quality Traits at Different Stages and Their Correlations using RILs population

Yang Meili, Li Yuling, Cui Qingxin, Li Junzhou   

  • Received:2009-12-08 Revised:2009-12-18 Online:2010-05-20 Published:2010-05-20

PDF (PC)

869

摘要：

利用普通玉米自交系丹232与爆裂玉米自交系N04为亲本构建的重组近交系(RILs) 群体为材料，对籽粒不同发育时期的粗蛋白、粗淀粉、粗脂肪和赖氨酸4个品质性状分析结果表明：RILs群体各时期4个品质性状均存在明显的超亲分离；亲本、F1及RILs群体的粗蛋白、粗脂肪及赖氨酸含量从10 DAP至30 DAP持续下降，至灌浆后期又表现不同程度的升高，而粗淀粉含量在整个发育时期持续增加。除粗蛋白的10 DAP与40 DAP间、粗脂肪的10 DAP与30 DAP间不相关外，其余各性状在不同发育时期均表现为显著或极显著正相关。粗淀粉与粗蛋白、粗脂肪及赖氨酸在4个时期表现为极显著负相关，其余性状间均表现为极显著正相关。

关键词: 牛羊源成分, 牛羊源成分, 饲料产品, 抽查检测, PCR技术

Abstract:

Two hundred and fifty-nine RILs were developed from the cross between a dent corn inbred D232 and a popcorn inbred N04. The variation of 4 nutritional quality traits at different stages were analyzed, including crude protein (CP), crude starch (CT), crude fat (CF) and crude lysine (LS). The results showed that there were obvious segregations beyond the two parents for all nutritional quality traits among RILs. For parents, F1 and RILs population, CP, CF, and LS were continuously decreasing from 10 DAP to 30 DAP, only slight difference of the decreasing range were observed. However, the content increased differently at late grain filling stage. For CT, there was consistent increase during the whole growth stages. All traits showed normal distributions. Except correlations for CP at 10DAP with 40DAP and CF at 10DAP with 30DAP, other nutritional quality traits at different stages were significant or highly significant positivly correlated. CT was highly negativly correlated with CP, CF and LS at four stages, the other traits were all highly positivly correlated.