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水稻移栽后苗期茎叶光合产物运转与分配特性研究
引用本文:任万军,张怀渝,杨文钰,樊高琼,刘代银.水稻移栽后苗期茎叶光合产物运转与分配特性研究[J].作物学报,2007,33(12):2067-2070.
作者姓名:任万军  张怀渝  杨文钰  樊高琼  刘代银
作者单位:四川农业大学,四川雅安 625014
基金项目:国家科技攻关项目;四川省科技攻关项目
摘    要:采用3H核素示踪方法,研究了水稻移栽后苗期茎叶光合产物的运转分配特性。结果表明,栽后4 d标记的茎鞘3H同化物在标记后10 d,有7.6%~9.8%运往新根,6.7%~15.6%运往主茎新叶,6.9%~9.9%运往分蘖茎叶;标记后30 d,约12%分配至新根,10%~14%分配至分蘖茎叶。标记后10~30 d参与再分配的同化物主要来自主茎茎鞘,输入器官主要为分蘖和新根。移栽后20 d标记叶片的3H同化物在标记后10 d,19%~28%分配至主茎新叶,4.6%~13.4%分配至分蘖,3%~5%运往新根。3个品种中,冈优22茎、叶光合产物分配到主茎中的比例较高,K优047分配到分蘖的比例较高,Ⅱ优162输送到新叶中的比例最大。

关 键 词:水稻  苗期  光合产物  
收稿时间:2007-06-26
修稿时间:2007-07-14

Characteristics of Photosynthate Transportation and Distribution at Seedling Stage after Transplanting in Rice
REN Wan-Jun,ZHANG Huai-Yu,YANG Wen-Yu,FAN Gao-Qiong,LIU Dai-Yin.Characteristics of Photosynthate Transportation and Distribution at Seedling Stage after Transplanting in Rice[J].Acta Agronomica Sinica,2007,33(12):2067-2070.
Authors:REN Wan-Jun  ZHANG Huai-Yu  YANG Wen-Yu  FAN Gao-Qiong  LIU Dai-Yin
Institution:Sichuan Agricultural University, Ya’an 625014, Sichuan, China
Abstract:The experiment was conducted using three rice hybrid combinations by 3H-isotope tracer technique. The results showed that at 10 days after labeling, 7.6%–9.8% of 3H-assimilates of stem and sheath labeled at 4 days after transplanting transported to new roots, 6.7%–15.6% to new leaf blades of main stem, and 6.9%–9.9% to the stem and leaf of tillers; at 30 days after labeling, about 12% to new roots, and 10%–14% to the stem and leaf of tillers. The 3H-assimilates of redistribution during 10–30 days after labeling was mainly from stem and sheath of main stem, and imported to tillers and new roots. There was 19%–28% of leaf-labeled-3H-assimilates distributed to new leaves of main stem at 10 days after labeling, and about 4.6%–13.4% to tillers, moreover, still 3%–5% to new roots. Gangyou 22 had a higher percentage of 3H-assimilates distributed to main stem, Kyou 047 had a higher percentage to tillers and Ⅱyou 162 had a higher percentage to new leaf blades.
Keywords:Rice(Oryza sativa L  )  Seedling stage  Photosynthate
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