摘要
本文研究了风干处理、发芽温度条件及果壳阻抑对芸薹属三个种种子休眠与萌发的影响,结果表明:(1)风干处理可使花后不同天数的种子完成后熟作用,促进种子的萌发,其破眠效果,尤以休眠浅的甘蓝型油菜为显著;(2)果壳对种子发芽有明显的阻抑作用,产生“强迫休眠”现象,其对种子的诱眠率,以休眠浅的甘蓝型油菜高于休眠深的芥莱型油菜;(3)油菜种子采收后先经风干,再在变温条件下发芽,其破眠效果高于单一风干或变温发芽。同时能有效地解除开花后20天以上幼嫩种子的休眠。
This paper presents the influences of air-drying, temperature and the inhibition of silique shell on dormancy and germination in three species of Brassica L. ( 1 ) Air-drying can promote after-ripening and gsrmination of the seeds at different maturities stage, dormancy-breaking can bs achieved particularly in the species of weak dormant seed-B.napus. ( 2 ) Silique shell apparently inhibits seed germination and produces 'forced dormancy* The dormancy-inducing efficiency ( DIE ) of B.napus (weak dormant seed) is higher than that of B.juncea ( deep dormant seed ) . ( 3 ) When the seeds are air-dried and then germinated under an alternative temperature condition,the effect of dormancy-breaking are better, as compared with the fresh seeds germinated under single air-drying or alternative temperature condition.
出处
《中国油料》
CSCD
北大核心
1990年第1期17-21,共5页
基金
联合国粮农组织(FAO)资助
国际植物遗传资源委员会(IBPGR)资助
关键词
芸薹属
种子
风干
发芽
破眠
Brassica
Air-drying
Germination
Dormancy breaking
