南方农业学报2012，Vol.43Issue(5)：566-569,4.DOI:10.3969/j:issn.2095-1191.2012.05.566
籼粳野杂交后代田间苗期耐寒性初步分析
Cold tolerance analysis on filial generation of Indica, Japonica and common wild rice at seedling stage in field
摘要
Abstract
[Objective]The present research was carried out to obtain rice germplasm resources on rice cold tolerance breeding, and preliminarily determine the strategy for rice cold tolerance breeding. [Method]Cold tolerance characters of four parents (Indica rice 9311, Japonica rice Bai R54, Nippon bare, and common wild rice DP10 ) and their filial generations were investigated at seedling stage under natural cultivation conditions in field. All materials grouped 6 to observe their cold damage performance on Mar. 22. [Result]Under natural low temperature condition, 39 accessions with strong cold tolerance and excellent comprehensive agronomic traits were screened out for rice breeding. Out of which, 33 accessions had 87.5% Japonica genetic constitution, 6 accessions had 75.0% Indica genetic constitution. Moreover, the 60 cold tolerant accessions had 50.0% wild rice genetic constitution with worse comprehensive agronomic traits. All the cold sensitive rice accessions had a high Indica rice genetic constitution of 87.5%. [Conclusion]Among all the filial generations of four parents, those with more genetic constitution of Japonica and common wide rice showed stronger cold tolerance. Japonica and common wild rice are important germplasm resources in cold tolerance breeding, the cold tolerance level of Indica rice could be enhanced by introducing genetic constitution of Japonica or common wide rice .关键词
普通野生稻/籼稻/粳稻/杂交后代/耐冷性/评价Key words
common wild rice(Oryza rufipogon Griff.)/ Japonica/ Indica/ filial generation/ cold tolerance/ evaluation分类
农业科技引用本文复制引用
阎勇,秦钢,梁海福,屈湫明,唐梅,黄大辉..籼粳野杂交后代田间苗期耐寒性初步分析[J].南方农业学报,2012,43(5):566-569,4.基金项目
广西自然科学基金项目(2010GXNSFB013033) （2010GXNSFB013033）
广西农业科学院科技发展基金项目(桂农科2011JM22) （桂农科2011JM22）
