摘要
对秤锤树种子基本性状作了测定， 并对种子进行酸蚀、药剂处理和低温层积等实验处理。结果表明， 种皮占种子风干质量的８８ ％ ～９４ ％ ， 透水性良好； 种子经浓硫酸处理２ ｄ ， 再用５００ ｍｇ· Ｌ－ １ 赤霉酸（ Ｇ Ａ３） 处理后， 在室外低温层积一冬， 发芽率可达４００６ ％ ， 对照种子则未萌发。秤锤树种子的休眠， 除了种皮机械束缚和透气性差的原因外， 种胚还需要一段低温的生理后熟过程， 属于综合休眠类型。图２ 表３
Basic properties of Sinojackia xylocarpa seed were determined and experiments with acid erosion,chemical treatment and low temperature were carried out in order to search out dormancy and germination nature of the seed.The results showed that weight of the seed coat,which has a good water permeability,occupied 88% to 94% of the total seed.The germination rate could reach at 40 06% after the seeds had been treated with sulphuric acid for two days,and with 500 mg·L -1 GA 3,then stratified outdoor at low temperature for a winter,but the control seeds could not germinate.Seed dormancy of Sinojackia xylocarpa is due to not only the poor air permeability and the mechnical restraint of the seed coat but the process that its embryo needs a period of time for post ripening as well.So,it belongs to a type of comprehensive dormancy.
出处
《浙江林学院学报》
CSCD
1999年第3期228-233,共6页
Journal of Zhejiang Forestry College
基金
浙江省杭州市园林文物局资助
关键词
秤锤树
种子
休眠
萌发
Sinojackia sylocarpa
seeds
dormancy
germination
