| 老芒麦花序分化过程的观察 |
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| 引用本文： | 贺晓,李青丰,陆海平.老芒麦花序分化过程的观察[J].内蒙古农业大学学报(自然科学版),2004,25(4):26-29. |
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| 作者姓名： | 贺晓 李青丰 陆海平 |
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| 作者单位： | 内蒙古农业大学生态环境学院,呼和浩特,010019 |
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| 基金项目： | 中科院知识创新工程"优良牧草种子生产基地的建立"专题(KSCXI-08-03-07) |
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| 摘 要： | 幼穗分化期是种子产量构成因子的形成时期。经历单棱期、双棱期、小穗分化期及小花分化期等时期。单棱期和双棱期的分化结果决定了小穗的数量;小穗分化期的分化结果决定了小穗上小花的数量;而小花分化期的分化结果则与小花的可育性有关。通常小穗最顶端的小花发育不全。从观察结果看,早春较低的温度可抑制老芒麦的分化,使之停留在单棱期,不利于分化。
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| 关 键 词： | 小穗 老芒麦 幼穗分化期 花序分化 可育性 构成因子 种子产量 观察 抑制 决定 |
| 文章编号： | 1009-3575(2004)04-0026-04 |
| 修稿时间： | 2004年6月9日 |
OBSERVATIONS ON INFLORESCENCE DIFFERENTIATION OF Elymus sibiricus.L. |
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| HE Xiao,LI Qing-feng,LU Hai-ping.OBSERVATIONS ON INFLORESCENCE DIFFERENTIATION OF Elymus sibiricus.L.[J].Journal of Inner Mongolia Agricultural University(Natural Science Edition),2004,25(4):26-29. |
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| Authors: | HE Xiao LI Qing-feng LU Hai-ping |
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| Abstract: | Inflorescence differentiation is the period when the seed production components were formed, including single ridged, double ridged, spikelet and flower differentiation stages. The spikelet number was determined by the result of single ridged and double ridged differentiation, the floret number was determined by the result of spikelet differentiation, whereas the fertility of floret was related to the result of flower differentiation. The distal florets of spikelets usually were sterile. Lower temperature in early spring inhibited the inflorescence differentiation of E. sibiricus. |
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| Keywords: | Elymus sibiricus L inflorescence differentiation |
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