| 改变授粉时间对半多育型玉米杂交种果穗性状及~(14)C同化物分配的影响 |
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| 引用本文： | 李连禄,王美云,赵明,丁在松.改变授粉时间对半多育型玉米杂交种果穗性状及~(14)C同化物分配的影响[J].中国农业大学学报,2001(1). |
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| 作者姓名： | 李连禄 王美云 赵明 丁在松 |
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| 作者单位： | 中国农业大学作物学院!北京圆明园西路2号中国农业大学(西校区)，100094，中国农业大学作物学院，中国农业大学作物学院，中国农业大学作物学院 |
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| 摘 要： | 本研究以半多育型玉米杂交种农大高光效 1号为材料 ,以套袋方式控制上、下果穗的授粉时间 ,探讨其对不同库位果穗性状及 14 CO2 同化物分配的影响。结果表明 ,改变穗库间的授粉时间后 ,尤其是第 2果穗早于第 1果穗 3d的授粉处理 ,明显提高第 2果穗的库强 ,有利于双穗均衡、同步生长发育 ;改变穗库的授粉时间使双果穗在穗长、穗粒数、穗重以及 14 CO2 同化物的分配上都较自然授粉明显增加。由此认为 ,玉米在扩大单株库容、提高单株产量上还有很大潜力 ,关键是采取育种、化控、栽培等技术手段解决双果穗同步抽丝或同步授粉的问题
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| 关 键 词： | 玉米 授粉 果穗性状 同化物分配 |
Effects of Changing Pollination Time on Characters of Ears and ~(14)C Assimilate Partition in Semi Prolific Maize |
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| Li Lianlu,Wang Meiyun,Zhao Ming,Ding Zaisong.Effects of Changing Pollination Time on Characters of Ears and ~(14)C Assimilate Partition in Semi Prolific Maize[J].Journal of China Agricultural University,2001(1). |
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| Authors: | Li Lianlu Wang Meiyun Zhao Ming Ding Zaisong |
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| Abstract: | A semi prolific maize hybrid, Nongda Gaoguangxiao 1, was used to study the effects of controlling pollinatial time on characters of the ear and 14 C assimilate partition by bagging the apical and subapical ear. The results showed that it was benefited to the balanced and synchronic development of the two ears through the shifting of pollination time, i.e, the subapical ear was pollinated 3 days earlier than the apical one. The length, number of kernels and weight of the two ears increased and the assimilate partition improved for the early pollinatial treatments in contrast with control. This fact suggested that there ware lots of potential to increase the sink size and its yield of one plant of maize. It was critical to solve the synchronized silking and pollination of the two ears by breeding, chemical control and culture measures. |
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| Keywords: | maize pollination ear characters assimilate partition |
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