CAJ | 학술논문

以选自不同杂种优势类群的10个玉米自交系为亲本,按照Griffing设计配成正反交90个组合,分别在河南3个地点进行随机区组试验,测定籽粒赖氨酸含量,分析基因型、地点及其互作对玉米籽粒赖氨酸含量的影响,并进行配合力和杂种优势分析.结果表明,地点和基因型各自之间差异以及地点×基因型的互作效应差异均达极显著水平;亲本赖氨酸含量的一般配合力(GCA)和特殊配合力(SCA)效应差异均达极显著水平,组合的赖氨酸含量以GCA效应为主;自交系E28、8085和Mo17的赖氨酸含量以及GCA效应均较高,是高赖氨酸育种的重要资源,尤其是E28,其赖氨酸含量和GCA效应分别达0.42%、0.502,有更大利用潜力;赖氨酸含量表现负向杂种优势,并与蛋白质含量存在极显著正相关(r=0.6052),而与产量之间存在显著负相关(r=-0.2280),表明时产量和品质同时改良的难度远大于对单一性状的改良.
이선자불동잡충우세류군적10개옥미자교계위친본,안조Griffing설계배성정반교90개조합,분별재하남3개지점진행수궤구조시험,측정자립뢰안산함량,분석기인형、지점급기호작대옥미자립뢰안산함량적영향,병진행배합력화잡충우세분석.결과표명,지점화기인형각자지간차이이급지점×기인형적호작효응차이균체겁현저수평;친본뢰안산함량적일반배합력(GCA)화특수배합력(SCA)효응차이균체겁현저수평,조합적뢰안산함량이GCA효응위주;자교계E28、8085화Mo17적뢰안산함량이급GCA효응균교고,시고뢰안산육충적중요자원,우기시E28,기뢰안산함량화GCA효응분별체0.42%、0.502,유경대이용잠력;뢰안산함량표현부향잡충우세,병여단백질함량존재겁현저정상관(r=0.6052),이여산량지간존재현저부상관(r=-0.2280),표명시산량화품질동시개량적난도원대우대단일성상적개량.
Total of 90 reciprocal crosses were composed according to Griffing design by using 10 inbreds from different heterotic groups,and trailed under randomized block design at three locations in Henan Province.The lysine content in kernels was tested by using MATRIX-I type NIRS,and the effects of genotypes,locations and their interactions as well as combining abilities and heterosis were evaluated on com lysine content in F2 kernels.The results showed that highly significant differences had been found in different locations,genotypes and the location xgenotype interactions.Meanwhile,highly significant differences existed in GCA and SCA effects of lysine content among parents,and the GCA effect was main on lysine content.The inbred lines E28,8085 and Mo17,with high lysine content and high GCA effect,were important resources in high lysine breeding,especially E28 with greater potential usage,which lysine content and GCA effect were 0.42%and 0.502,respectively.Lysine content in kernels of hybrid expressed negative heterosis and showed positive relations with protein content(r=0.6052),while negative relations with grain yield(r=-0.2280).It inferred that the improvement of yield and quality synchronously would be far more difficult than the improvement of a single trait.