油菜种子超干燥保存的最佳含水量研究  

Optimum moisture content of rapeseed for ultradry storage at different temperature

作　　者：伍晓明[1] 郑普英[1] 黄永菊[1] 王汉中[1] 许鲲[1] 陈碧云[1] 

机构地区：[1]中国农业科学院油料作物研究所,农业部油料作物遗传改良重点实验室,湖北武汉430062

出　　处：《中国油料作物学报》2001年第3期5-8,12,共5页Chinese Journal of Oil Crop Sciences

基　　金：国家自然科学基金重点项目 (3 983 0 2 70 )

摘　　要：对 5℃、2 5℃和 3 5℃条件下保存 6个月或 1 2月的油菜种子发芽率、发芽指数、活力指数、电导率和脱氢酶活性研究显示 ,油菜种子在不同温度条件下有不同的最佳含水量范围 ,最佳含水量可随保存温度下降而上升 ,3 5℃、2 5℃和 5℃条件下油菜种子最佳含水量分别为 4 .0 % 5 .4 %、4 .0 % 6.3 %和 7.5 %以上。推荐油菜种子 5 3 5℃超干燥保存的实用含水量为 4 % 5 %。Newly harvested rapeseed of Zhongyou 821 ( Brassica napus L.) were dried to 12 different moisture content levels from 2.3%~8.4% by using desiccant CaCl 2, then stored at 35℃ for 6 months, 25℃ and 5℃ for 12 months. Changes of seed viability were evaluated by measuring seed germination percentage, germination index, vigour index, conductivity and dehydrogenase activity. The results indicated that there were different optimum moisture contents of rapeseed storage under different temperatures, the optimum moisture contents increased with the declining of temperature. The optimum moisture contents at 35℃, 25℃ and 5℃ were 4.0%~5.4%, 4.0%~6.3% and >7.5% respectively. A moisture content of 4%~5% was recommended for rapeseed ultradry storage while temperature ranged from 5℃ to 35℃.

关 键 词：油菜 超干燥保存 种子生活力 最佳含水量 种子保存 

分 类 号：S565.403.8[农业科学—作物学] S339.32