杂交稻高产群体干物质积累运转Ⅱ.碳水化合物的积累运转
Storage Carbohydrate Accumulation and Transportation Pattern of High Yielding Colony of Hybrid Rice
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摘要: 杂交稻高产群体贮藏碳水化合物(SC)的积累动态呈Logistic生长曲线,积累半量期在开花期。其中的淀粉积累动态也呈Logistic生长曲线,积累半量期在乳熟期;可溶性糖的积累动态呈单峰曲线,积累高峰在齐穗期,营养器官特别是叶鞘和茎秆,中期积累了大量SC,抽穗后源源运转到穗部,构成籽粒SC的30%~33%,其间齐穗后10d内运出的SC最多,等于当时籽粒SC净积累量的一半,对籽粒初期生长起了重大作用。在龙海县生产条件下,杂交早稻抽穗前茎鞘积累的SC和抽穗后叶片光合生产的SC都较多,因而产量显着高于杂交晚稻。
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关键词:
- 杂交稻 /
- 贮藏碳水化合物(SC) /
- 积累运转
Abstract: Storage carbohydrates(SC)accumulation and transportation pattem in high yielding colony of hybrid rice appeared as Logistic curve with the highest accumtilation speed at flowring stage.Among storage carbohydrates, the starch assumulation trends also appeared as Logistic curve with the highest accumulation soeed at earlier stage of milk mature, However,the accumulation trends of monosaccharides and oligosaccharides appeared as single kurtosis curve with the highest accumulation amount at heading stage From initative panicle differentiation to heading,a lot of SC waS accumulation in vegetative organs especially in sheaths and stems After heading the SC ws transported to panicles,which composed 30%~33% of the SC accumulated in grains.Most of transportable SC was transportion to panicles in ten days after heading,which was about the half of seed SC accurnulated in the same period.Under the production condition of Longhai City,the SC accumulation of earlier crop hybrid rice was higher in sheaths and stems before heading and form leaf photosynthesis after heading Therefore,the grain yield of earlier crop rice showed greatly higher than that of later crop rice.-
Key words:
- Hybrid rice /
- Storage Carhohydrate /
- Accumulation and transportation
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[3] 王永锐1986.杂交水稻开花前后的32P,35S,14C—光合产物的吸收、运转、分配与谷粒产量研究.中山大学学报,4.64-76 [4] 凌启鸿,杨建昌.1986.水稻群体“粒叶比”与高产栽培途径的研究.中国农业科学,3:1-8 [8] 宋祥甫、縣和一等,中国产ハイフリドライスの物貭生产に間する研究、第3报收量生产期間における非構造性炭水化物及び全窒素濃度の燮勤からなた子育生产特性.日本作物学会纪事,59(1):107-112
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