摘要
通过对１９９４年和１９９５年采收的山楂种子进行层积、发芽、组织培养、生活力测定、ＧＡ３处理等多种方法进行研究认为，层积中山楂种子先解除休眠而后破壳；种子子叶休眠时间短，并可在干藏条件下解除休眠，休眠解除后，种皮抑制其生长；在种子发育过程中，子叶进入休眠前，种皮对子叶生长有一定作用；干藏７个月以内的种子，去除种皮或去除种皮及子叶，胚芽、胚轴。
The hawthorn ( C.Pinnatifida Bge.) seeds collected in 1994 and 1995 were studied by means of stratification,germination,organic culture,viability determination,GA 3 processing and etc.The result showed that the testa of hawthorn seed split after dormancy in stratificaion;cotyledons dormancy period was short and it could release from dormancy under the condition of dry storing,after dormancy,the testa restricted its growth;During the growth and development of hawthorn seed,cotyledon came into dormancy,the testa did something on cotyledon growth;The hawthorn seeds under the condition of dry storing for seven months could not germinate if got rid of testa or testa and cotyledon,plumule,plumular axis and radicle.
基金
河北省自然科学基金
关键词
山楂
种子
萌发
休眠
hawthord seed
germination
dormancy
