期刊论文

中文

中国水稻科学

1001-7216

2005

19

3

243-248

10.3321/j.issn:1001-7216.2005.03.008

国家自然科学基金资助项目（30370835）； 湖南省中青年基金资助项目（00TZYZ068）； 湖南省教育厅青年基金资助项目（02B011）；

本校为第一机构

以6个两系杂交组合和2个三系杂交组合为材料,比较研究了杂交稻头季与再生季的源库特性和再生稻产量形成的源库关系.结果表明:(1)再生季LAI为头季的1/3左右,再生稻单茎叶面积约为头季稻的1/7～1/3,头季总库容约为再生季的1.5倍,再生稻粒叶比约为头季稻的1.5～2倍;(2)头季稻较大的粒叶比对高产有利;头季稻成熟期LAI较大、粒叶比较小、成熟期单茎鞘干质量较大、茎鞘物质输出率高,有利于再生稻的高产;(3)再生季齐穗期LAI与产量成显著正相关;对高节位再生稻而言,齐穗期单茎叶面积与单茎产量呈极显著正相关,粒叶比与结实率呈负相关、与产量呈极显著负相关.再生稻,特别是高节位再生稻,其源库关系属增源...

Eight hybrid rice combinations were used to study the source-sink characteristics of main crop and ratooning rice in hybrid rice, and the source-sink relationship for yield formation in ratooning rice. The results indicated that:(1) Leaf area index(LAI) of ratooning rice was about one third of that of the main crop, and leaf area per culm of ratooning rice was about from one seventh to one third of that of the main crop. The whole sink volume of the main crop was about 1.5 times of that of ratooning rice. The ratio of grain number to leaf area ...