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| 四倍体刺槐胚珠败育及其机制 | |
| 引用本文： | 姜金仲,李云,贺佳玉,郝晨,王淑琴,温富贵.四倍体刺槐胚珠败育及其机制[J].林业科学,2011,47(5). |
| 作者姓名： | 姜金仲 李云 贺佳玉 郝晨 王淑琴 温富贵 |
| 作者单位： | 1. 北京林业大学生物科学与技术学院,林木育种国家工程实验室,林木花卉遗传育种教育部重点实验室,北京100083;贵州师范学院森林植物研究所,贵阳550018 2. 北京林业大学生物科学与技术学院,林木育种国家工程实验室,林木花卉遗传育种教育部重点实验室,北京100083 3. 北京市延庆县园林绿化局,北京,102100 |
| 基金项目： | 行业专项，贵州省自然科学基金，国家自然科学基金，"十一五"国家科技支撑项目 |
| 摘 要： | 四倍体刺槐的胚珠败育可分为3个阶段.初期败育:发生在花冠展开后5～30天之间,合子处于休眠状态,平均败育率为51.9%,败育胚珠体积较小、轻度至深度枯黄色,败育胚珠的有胚率为0,因而属无胚胚珠败育,发生原因可能与果实生理落果有关;中期败育:花冠展开后30～50天之间,球形原胚、心形胚已逐渐形成,平均败育率为30.3%,败育胚珠体积较小、表面部分枯黄色、周围有黄色透明液体,败育胚珠的有胚率为33.2%;后期败育:花冠展开50天后,子叶胚已逐渐形成,平均败育率为72.6%,败育胚珠干瘪、较小、棕黄色,败育胚珠的平均有胚率为70.8%;中、后期败育属有胚、无胚胚珠同时存在的胚珠败育,其发生的原因主要是幼胚的畸形死亡.花冠展开15天之后的胚珠发育期间,败育胚珠生长促进类内源激素(GA3,IAA)水平低于正常胚珠,生长抑制类内源激素(ABA)水平及ABA/(IAA+GA,)明显高于正常胚珠,因此,四倍体刺槐胚珠败育也可能与胚珠内源激素异常有关. |
| 关 键 词： | 刺槐 同源四倍体 胚珠败育 内源激素 |
Ovule Abortion and Its Mechanism for Tetraploid Robinia pseudoacacia |
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| Jiang Jinzhong,Li Yun,He Jiayu,Hao Chen,Wang Shuqin,Wen Fugui.Ovule Abortion and Its Mechanism for Tetraploid Robinia pseudoacacia[J].Scientia Silvae Sinicae,2011,47(5). | |
| Authors: | Jiang Jinzhong Li Yun He Jiayu Hao Chen Wang Shuqin Wen Fugui |
| Institution: | Jiang Jinzhong1,2 Li Yun1 He Jiayu1 Hao Chen1 Wang Shuqin3 Wen Fugui3(1.National Engineering Laboratory for Tree Breeding Key Laboratory for Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education College of Biological Sciences and Biotechnology,Beijing Forestry University Beijing100083,2.Forest Plant Research Institute,Guizhou Normal College Guiyang 550018,3.Landscape Bureau of Yanqing County,Beijing Beijing 102100) |
| Abstract: | Ovule abortion of tetraploid Robinia pseudoacacia was divided into 3 phases.Initial phase occurred between 5 days and 30 days after coronal opening,zygote in dormancy,and the average abortion rate was 51.9%.The abortion ovules had less volume without embryo and displayed deep yellow color,belonging to ovule abortion without embryo.This abortion could be related to physiological fruit drop.Middle phase abortion occurred between 30 days and 50 days after coronal opening,with spherical embryo and heart-shaped ... |
| Keywords: | Robinia pseudoacacia autotetraploid ovule abortion endogenous hormone |
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