| Effect of Environment and Genetic Recombination on Subspecies and Economic Trait Differentiation in the F-2 and F-3 Generations from indica-japonica Hybridization | |
| Alternative Title | Effect of Environment and Genetic Recombination on Subspecies and Economic Trait Differentiation in the F2 and F3 Generations from indica-japonica Hybridization |
| Wang Hetong1; Jin Feng1; Jiang Yijun2; Lin Qingshan2; Xu Hai1; Cheng Ling1; Xia Yingjun1; Liu Chunxiang1; Chen Wenfu1; Xu Zhengjin1 | |
| 2014 | |
| Source Publication | JOURNAL OF INTEGRATIVE AGRICULTURE
 |
| ISSN | 2095-3119 |
| Volume | 13Issue:1Pages:18-30 |
| Abstract | indica and japonica are the two most important subspecies of Asian cultivated rice. Identifying mechanisms responsible for population differentiation in these subspecies is important for indica-japonica hybridization breeding. In this study, subspecies and economic trait differentiation patterns were analyzed using morphological and molecular (InDel and Intron Length Polymorphism) data in F-2 and F-3 populations derived from indica-japonica hybridization. Populations were grown in Liaoning and Guangdong provinces, China, with F-3 populations generated from F-2 populations using bulk harvesting (BM) and single-seed descent methods (SSD). Segregation distortion was detected in F-3-BM populations, but not in F-3-SSD or in F-2 populations. Superior performance was observed with respect to economic traits in Liaoning compared with that in Guangdong and 1000-grain weight (KW), seed setting rate (SSR) and grain yield per plant (GYP) were significantly correlated with indica and japonica subspecies types. Analysis of molecular and morphological data demonstrated that the environment is the main factor giving rise to population differentiation in indica-japonica hybridization. In addition, we also found that KW, SSR and GYP are related to subspecies characteristics and kinship, which is possibly a significant factor resulting in economic trait differentiation and determining environmental adaptability. Our study has provided new insights into the process of population differentiation in these subspecies to inform indica-japonica hybridization breeding. |
| Other Abstract | indica and japonica are the two most important subspecies of Asian cultivated rice. Identifying mechanisms responsible for population differentiation in these subspecies is important for indica-japonica hybridization breeding. In this study, subspecies and economic trait differentiation patterns were analyzed using morphological and molecular (InDel and Intron Length Polymorphism) data in F2 and F3 populations derived from indica-japonica hybridization. Populations were grown in Liaoning and Guangdong provinces, China, with F3 populations generated from F2 populations using bulk harvesting (BM) and single-seed descent methods (SSD). Segregation distortion was detected in F3-BM populations, but not in F3-SSD or in F2 populations. Superior performance was observed with respect to economic traits in Liaoning compared with that in Guangdong and 1 000-grain weight (KW), seed setting rate (SSR) and grain yield per plant (GYP) were signiifcantly correlated with indica and japonica subspecies types. Analysis of molecular and morphological data demonstrated that the environment is the main factor giving rise to population differentiation in indica-japonica hybridization. In addition, we also found that KW, SSR and GYP are related to subspecies characteristics and kinship, which is possibly a signiifcant factor resulting in economic trait differentiation and determining environmental adaptability. Our study has provided new insights into the process of population differentiation in these subspecies to inform indica-japonica hybridization breeding. |
| Keyword | ORYZA-SATIVA L. GRAIN-SIZE RICE MARKERS DNA DOMESTICATION DIVERSITY WEIGHT YIELD QTL indica-japonica hybridization subspecies differentiation environment economic traits recombinant inbred line rice |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [National Natural Science Foundation of China] |
| CSCD ID | CSCD:5054656 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/157302 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.中国科学院金属研究所 2.中国科学院广州地球化学研究所 |
| Recommended Citation GB/T 7714 | Wang Hetong,Jin Feng,Jiang Yijun,et al. Effect of Environment and Genetic Recombination on Subspecies and Economic Trait Differentiation in the F-2 and F-3 Generations from indica-japonica Hybridization[J]. JOURNAL OF INTEGRATIVE AGRICULTURE,2014,13(1):18-30. |
| APA | Wang Hetong.,Jin Feng.,Jiang Yijun.,Lin Qingshan.,Xu Hai.,...&Xu Zhengjin.(2014).Effect of Environment and Genetic Recombination on Subspecies and Economic Trait Differentiation in the F-2 and F-3 Generations from indica-japonica Hybridization.JOURNAL OF INTEGRATIVE AGRICULTURE,13(1),18-30. |
| MLA | Wang Hetong,et al."Effect of Environment and Genetic Recombination on Subspecies and Economic Trait Differentiation in the F-2 and F-3 Generations from indica-japonica Hybridization".JOURNAL OF INTEGRATIVE AGRICULTURE 13.1(2014):18-30. |
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