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| 四倍体刺槐种子形态及结构变异研究 | |
| 引用本文： | 孙宇涵,姜金仲,李云,孙鹏,薛诺稳.四倍体刺槐种子形态及结构变异研究[J].核农学报,2011,25(4):724-729. |
| 作者姓名： | 孙宇涵 姜金仲 李云 孙鹏 薛诺稳 |
| 作者单位： | 1. 北京林业大学生物科学与技术学院,北京林业大学林木育种国家工程实验室,北京林业大学林木花卉遗传育种教育部重点实验室,北京100083 2. 北京林业大学生物科学与技术学院,北京林业大学林木育种国家工程实验室,北京林业大学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,贵州贵阳550018 3. 嵩县林业局,河南嵩县,471400 |
| 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： | 对四倍体刺槐种子进行观测和解剖,结果证明：四倍体刺槐种子单粒重、有胚率和萌发率分别是二倍体刺槐的26.3%、30.1%和6.3%;单粒重10mg以上的种子（比例4.41%）萌发率达62.28%,小于7mg（比例84.97%）的种子就完全失去了萌发力。四倍体刺槐种胚重量、胚乳重量、种皮重量及三者的构成比例均明显不同于二倍... |
| 关 键 词： | 刺槐 同源四倍体 种子结构变异 种子发芽率 |
| 收稿时间： | 2011-03-26 |
MORPHOLOGICAL AND STRUCTURAL VARIATION OF SEEDS FROM TETRAPLOID Robinia pseudoacacia |
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| SUN Yu-han,JIANG Jin-zhong,LI Yun,SUN Peng,XUE Nuo-wen.MORPHOLOGICAL AND STRUCTURAL VARIATION OF SEEDS FROM TETRAPLOID Robinia pseudoacacia[J].Acta Agriculturae Nucleatae Sinica,2011,25(4):724-729. | |
| Authors: | SUN Yu-han JIANG Jin-zhong LI Yun SUN Peng XUE Nuo-wen |
| Institution: | 1. National Engineering Laboratory for Tree Breeding, Key Laboratory for Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Biotechnology, Beijing Forestry Beijing 100083; 2. Forest plant graduate school, Guizhou normal college,Guiyang, Guizhou 550018; 3. Songxian Forestry Bureau, Songxian county, Songxian,Henan 471400 |
| Abstract: | The seeds from the tetraploid Robinia pseudoacacia (TRP) were observed and dissected within successive 3 years. The individual seed weight, embryo rate and germination rate of TRP were 26.3%, 30.1% and 6.3% of the diploid Robinia pseudoacacia (DRP), respectively. The germination rate of seeds varied with the weight of individual seed; the seed weight more than 10mg (account for 4.41%) had the germination rate of 62.28%, whereas the weight less than 7mg lost their germination ability. The embryo, seed coat and endosperm weight of seed from TRP were all significantly different from DRP. The maximum seed endosperm weight and seed coat weight of TRP were significantly lower than that of DRP, and the TRP endosperm weight was also remarkably lower than that of DRP when the individual seed weight was less than 8mg. The weight of embryo, ?seed coat and endosperm of seed from the DRP were almost equal, accounting for 34.60%, 33.22%, 32.18% of the total weight, respectively. However, for the TRP seed, the weight percentages of both embryo and endosperm reduced and the weight percentages of seed coat rose with the declining of the weight of individual seed, and the percentage of seed coat from TRP were much larger than that from DPR |
| Keywords: | Robinia pseudoacacia autotetraploid seed structure variation seed germination rate |
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