金沙江干热河谷地区不同含油量麻疯树种子的差异性  

Variation in Jatropha curcas L.Seeds with Different Oil Contents in Dry-hot Valley of the Jinsha River

作　　者：颜秉意[1] 叶生亮[1] 严安心[1] 徐莺[1] 陈放[1] 

机构地区：[1]四川大学生命科学学院,成都610064

出　　处：《应用与环境生物学报》2011年第5期656-661,共6页Chinese Journal of Applied and Environmental Biology

基　　金：国家"十一五"科技支撑计划项目(No.2006BAD07A04);科技部国际合作项目(No.2006DFB63400)资助~~

摘　　要：根据金沙江干热河谷地区麻疯树种子的含油量,将麻疯树种子分为组Ⅰ（26%~30%）、组Ⅱ（30%~34%）、组Ⅲ（34%~38%）、组Ⅳ（38%~42%）.该地区种子体积介于1.544~1.680 cm3之间;其中组Ⅱ的种子最大（1.680 cm3）,组Ⅳ的种子最小（1.544 cm3）.组Ⅱ种子的百粒重同样为最高（69.367 g）,组Ⅲ的种子最轻（62.313 g）.出仁率从低到高依次为：组Ⅰ（61.752%）〈组Ⅲ（63.352%）〈组Ⅱ（64.132%）〈组Ⅳ（65.192%）.百粒种子产油量从组Ⅰ到组Ⅳ逐渐升高（17.731~25.342 g）.1H-NMR图谱分析发现,各组种子之间的脂肪酸组成无明显差异,而脂肪酸成分的含量存在显著差异.种子的发芽势、发芽率和发芽指数随含油量的增加而升高,种子的吸胀速率则相反.种子含油量与种子大小的相关性不显著,与种子质量、出仁率、种子产油量、脂肪酸组成、发芽势、发芽率、发芽指数和吸胀速率之间则都有着极显著的相关性.The morphological characteristics of Jatropha curcas L.seeds from the dry-hot valley of the Jinsha River were analyzed.The seeds were divided into group Ⅰ（26%~30%）,group Ⅱ（30%~34%）,group Ⅲ（34%~38%） and group Ⅳ（38%~42%） according to their oil contents.The size of seeds ranged from 1.544 to 1.680 cm3.The seeds of group Ⅱ had the largest value for seed size（1.680 cm3） and 100-seed weight（69.367 g）,and the lowest being for seeds of group Ⅳ（1.544 cm3） and group Ⅲ（62.313 g）.The shelling percentage increased from group Ⅰ（61.752%） to group Ⅳ（65.192%）.No significant difference in the composition of fatty acids was observed in the hexane extracts of the seeds of the groups Ⅰ~Ⅳ by using？1H-NMR spectroscopy,while the percentage of fatty acids was significantly different in the groups Ⅰ~Ⅳ.The seed germination energy,germination rate and germination index increased with the increasing oil content,however,seed imbibition rate decreased with the increasing oil content.？The results indicated that seed oil content had significant correlation with seed weight,kernel ratio of seeds,seed oil production,percentage of fatty acids,germination energy,germination rate,germination index and seed imbibition rate,but it had no correlation with seed size.Fig 3,Tab 4,Ref 30

关 键 词：麻疯树种子 含油量 脂肪酸组成 萌发率 相关性 金沙江干热河谷 

分 类 号：S565.9[农业科学—作物学]