中国农业科技导报Issue(2)：144-152,9.DOI:10.3969/j.issn.1008-0864.2013.02.23
冬水田区杂交中稻高产组合的库源特征研究
Studies on Sink-source Characteristics of Mid-season Hybrid Rice for High Yield in Winter Water Logged Field
摘要
Abstract
Taking 30 mid-season hybrid rice combinations as material, the relationship between the grain yield and the sink-source characteristics of hybrid rice were researched in 3 types of winter water logged field ( drought field in summer, ordinary field and store paddy), respectively. The results indicated that the yield of mid-season hybrid rice was greatly influenced by the types of paddy field. There was the same variation trend of grain yield for 30 mid-season hybrid rice combinations in 3 different types of paddy field. 7 hybrid rice combinations could get high yield in 3 types of winter water logged field. The high-yield goals in winter water logged field were to further increase seed setting percentage and 1 000-grain weight, on the basis of securing bigger number of spikelets per unit area. There were parabolas relationship between the theoratical grain yield and production potential, and spikelets per panicle, sink plumpness index, respectively. The high-yield combinations for winter water logged field had the following characteristics:160~200 spikelets per panicle, maximum tillers 332. 98 × 104 ~360. 98 × 104 per hm2 , productive panicles 200. 14 × 104 ~225. 24 × 104 per hm2 , seed setting percentage 77. 56% ~82. 38%, 1000-grain weight 29. 06~30. 32 g, spikelets number 3. 61 × 104 ~3. 98 × 104 per/m2 , leaf area index 5. 69~6. 59, spikelet number to leaf area ratio 0. 55~0. 70 spikelet/cm2 , single ear weight 4. 00~4. 51 g. These results provide a scientific basis for rice breeders to identify high yield combination, and production sections to screen rice varieties suitable to grow in different types of paddy fields in winter water logged field areas.关键词
冬水田/杂交中稻/高产组合/库源特征Key words
winter water logged field/mid-season hybrid rice/high-yield combination/sink-source characteristic分类
农业科技引用本文复制引用
徐富贤,阎运德,熊洪,张林,郭晓艺,朱永川,周兴兵,刘茂..冬水田区杂交中稻高产组合的库源特征研究[J].中国农业科技导报,2013,(2):144-152,9.基金项目
公益性行业专项(201003016) （201003016）
粮食科技丰产工程(2011BAD16BO5-1) （2011BAD16BO5-1）
西南水稻创新体系建设 （）
四川省学术带头人培养基金 （）
四川省水稻育种攻关 （）
四川省财政推广项目资助 （）
