摘要
应用^(14)C同位素示踪技术研究了不同水稻品种头季后期光合产物的分配及其与再生稻生长发育的关系。结果表明,各品种头季齐穗后15天的光合产物主要运往穗部,其余27％～51％分配到营养器官。其残留于稻桩内的多少对头季稻营养和再生稻生长具有显著影响。残留在稻桩的光合产物越多,稻桩总糖、可溶性糖含量则越高,再生稻的发苗数、有效穗和产量也越高。头季收获时,再生芽与长芽中分配的光合产物量呈正相关。
Using ^(14)C tracer technique, the relationship between photosynthates distribution during the ripening stage of the main crop and the growth and development of its ratooning crop was studied. The photosynthatcs of the main crop after the completion of heading were mostly transported to its panicles and the rest (27%—51%) were partitioned to its vegetative organs. The photosynthates left in the rice stubbles had a great effect on the growth and development of the ratooning crop. Total sugars and soluble sugars in the stubbles and ratoon tiller number and productive panicles and grain yield of the ratooing crop increased with the quantity of the photosynthates left in the stubbles of the main crop. The length of ratoon buds was positively correlated with the pholosynthates paritioned to the buds.
出处
《西南农业大学学报（自然科学版）》
CSCD
1993年第5期382-385,共4页
Journal of Southwest Agricultural University
基金
农业部"八五"重点研究资助项目
关键词
水稻
光合产物
再生稻
生长
发育
paddy
photosynthates ratoonrice
growth development(biology)/distribution
