核农学报2011，Vol.25Issue(4)：724-729,6.
四倍体刺槐种子形态及结构变异研究
MORPHOLOGICAL AND STRUCTURAL VARIATION OF SEEDS FROM TETRAPLOID Robinia pseudoacacia
摘要
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关键词
刺槐/同源四倍体/种子结构变异/种子发芽率Key words
Robinia pseudoacacia/autotetraploid/seed structure variation/seed germination rate分类
农业科技引用本文复制引用
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):724-729,6.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 （）
