| 不同密度下玉米穗茎生长与雌穗分化的关系 |
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| 引用本文： | 董红芬,李洪,李爱军,阎晓光.不同密度下玉米穗茎生长与雌穗分化的关系[J].玉米科学,2010,18(5):65-71. |
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| 作者姓名： | 董红芬 李洪 李爱军 阎晓光 |
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| 作者单位： | 山西省农业科学院谷子研究所,山西,长治,046011 |
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| 摘 要： | 以3个玉米杂交种为试验材料,在不同种植密度下研究玉米植株穗分化过程中雌幼穗和茎秆的生长动态与每穗小花数的关系。结果表明:穗分化与茎秆等各器官具有同伸关系。雌穗分化前期,幼穗生长缓慢,茎秆开始加速生长;性器官形成期幼穗生长加速,穗重、茎重与每穗小花分化数呈正相关,穗重增长率与茎重增长率之比也与每穗小花分化数呈正相关,且都随密度增大而减少。
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| 关 键 词： | 玉米 密度 穗茎生长 雌穗分化 |
| 收稿时间： | 1/5/2010 12:00:00 AM |
Relationships Between Spike and Stem Growth and Female Spike Differentiation under Different Densities |
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| DONG Hong-fen,LI Hong,LI Ai-jun,YAN Xiao-guang.Relationships Between Spike and Stem Growth and Female Spike Differentiation under Different Densities[J].Journal of Maize Sciences,2010,18(5):65-71. |
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| Authors: | DONG Hong-fen LI Hong LI Ai-jun YAN Xiao-guang |
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| Abstract: | The research of the relationship between both female spike and stem growth and per female spike florets in the process of spike differentiation with three maize hybrids was carried out at different planting densities. The results showed that spike differentiation and stem and other organs had a relationship with the stretch. The younger spike grew slowly at the early stage of female spike differentiation, and the growth of stem started to accelerate. The younger spike grew faster at the stage of immature sexual organs, and the fresh weight of spike and stem weight was positively correlated to spikelet differentiation number per ear, and the weight ratio of diurnal increases of ear/stem was positively correlated to spikelet differentiation number per ear too, and they were decreased with the increase of density. |
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