【摘 要】
：
The phenotypes of protein and amino acid contents were measured in an F9 recombinant inbred line population derived from a cross between Zhenshan 97B and Delong
【机 构】
：
National Key Laboratory of Crop Genetic Improvement,Shanghai Agrobiological Gene Center
【基金项目】
：
the National Program of High Technology Development;the National Program of Plant Transgenic Breeding;the National Program on the Development of Basic Research;国家自然科学基金
论文部分内容阅读
The phenotypes of protein and amino acid contents were measured in an F9 recombinant inbred line population derived from a cross between Zhenshan 97B and Delong 208.A total of 48 and 64 QTLs were identified in 2004 and 2005,respectively.The contribution of each QTL to the phenotypic variation ranged from 4.0％ to 43.7％.Most QTLs co-localized,forming 29 QTL clusters on the chromosomes with three major ones detected in both years,which were mapped on chromosomes 1,7 and 9,respectively.The two QTL clusters for amino acid content,qAa1 and qAa7,influenced almost all the traits with the allele from Zhenshan 97B,and the third QTL cluster for amino acid content,qAa9,increased the lysine content with the allele from Delong 208.A wide coincidence was found between the QTL detected under this study and the loci involved in amino acid metabolism pathways in nitrogen assimilation and transport,or protein biosynthesis.The results would facilitate the identification of candidate genes and could be used in marker-assisted selection for the favorable allele in rice quality improvement.
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