Mapping of quantitative trait loci for fiber and lignin contents from an interspecific cross Oryza sativa×Oryza rufipogon

作     者：Jian-kun XIE Xiang-li KONG Jie CHEN Biao-lin HU Piao WEN Jie-yun ZHUANG Jin-song BAO 

作者机构：Institute of Nuclear Agricultural Sciences College of Agriculture and Biotechnology Zhejiang University Hangzhou 310029 China College of Life Sciences Jiangxi Normal University Nanchang 330022 China China National Rice Research Institute Hangzhou 310006 China 

出 版 物：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 (浙江大学学报（英文版）B辑（生物医学与生物技术）)

年 卷 期：2011年第12卷第7期

页      面：518-526页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：Project supported by the National Basic Research Program (973) of China (No. 2002CCC00800) the Jiangxi Provincial Inviting Tender Project for Principal Research Topic (No. 20068) the Ministry of Agriculture of China (Nos. 200803034 and 201103007) 

主　　题：Rice straw Acid detergent fiber Lignin Quantitative trait loci 

摘      要：Rice straw is always regarded as a by-product of rice production,but it could be a significant energy source for ruminant *** of the genetic variation and genetic architecture of cell wall traits will facilitate rice breeders by improving relevant traits through selective breeding and genetic *** common wild rice,Oryza rufipogon Griff.,which is considered to be the progenitor of Oryza sativa,has been widely utilized for the identification of genes of agronomic importance for rice genetic *** the present study,the mapping of quantitative trait loci (QTLs) for acid detergent fiber (ADF),neutral detergent fiber (NDF),acid detergent lignin (ADL),and ADL/NDF ratio was carried out in two environments using a backcrossed inbred line (BIL) population derived from a cross between the recurrent parent Xieqingzao B (XB) and an accession of Dongxiang wild rice (DWR).The results indicated that all four traits tested were continuously distributed among the BILs,but many BILs showed transgressive segregation.A total of 16 QTLs were identified for the four traits,but no QTLs were in common in two environments,suggesting that environment has dramatic effects on fiber and lignin *** to the QTL positions for grain yield-related traits,there were no unfavorable correlations between grain yield components and cell wall traits in this *** QTLs identified in this study are useful for the development of dual-purpose rice varieties that are high in grain yield and are also high in straw quality.