不同处理对神黄豆种子发芽的影响

Effects of Different Treatments on Seed Germination of Cassia agnes

用剪刀剪、锉子锉、与瓜子石混搓等机械处理法以及用5%氢氧化钾、98%浓硫酸等化学处理法对神黄豆种子进行预处理,3倍种子体积沸水浸泡并自然冷却浸种48 h,观察并统计种子吸胀粒数、种皮破裂数后置床进行发芽测定。结果表明,除与瓜子石混搓处理外,其余处理均能促进种子吸水膨胀,显著提高神黄豆种子发芽率。其中以98%浓硫酸浸泡2 h处理效果最好,其吸胀率达98.0%、发芽率最高,达88.3%,吸胀破皮率、不正常发芽率均为0%;其次是锉子锉处理效果好,其吸胀率达99.0%,发芽率可达84.7%,吸胀破皮率、不正常发芽率均为0%;用5%氢氧化钾进行浸泡处理,对种子发芽有一定的促进作用,但发芽不整齐,发芽速度慢,处理14 d吸胀率为59.7%、发芽率最高为48.0%;与瓜子石混搓处理效果相对较差,对神黄豆种子发芽的促进作用不明显,吸胀率为5.0%、发芽率为5.0%。

Cassia agnes seeds were pretreated with mechanical treatment methods such as scissors,files,rubbing with melon seed stones,and chemical treatment methods such as 5%potassium hydroxide and 98%concentrated sulfuric acid.The seeds were soaked in boiling water with three times the seed volume and naturally cooled for 48 hours.The number of imbibited seeds and the number of broken seed coats were observed and counted,and then the germination was measured in the bed.The results showed that except for the treatment of mixing with melon seed stone,all other treatments could promote seed water absorption and swelling,significantly improving the germination rate of seeds.Among them,soaking in 98%concentrated sulfuric acid for 2 hours had the best effect,with a swelling rate of 98.0%and the highest germination rate of 88.3%.The swelling and breaking rate and abnormal germination rate were both 0%;secondly,the effect of file treatment was good,with a swelling rate of 99.0%,a germination rate of 84.7%,and a swelling rate of 0%,as well as an abnormal germination rate;soaking with 5%potassium hydroxide could promote seed germination to a certain extent,but the germination was irregular and slow,and the swelling rate was 59.7%and the highest germination rate was 48.0%after 14 days of treatment;the effect of mixing with melon seed stone was relatively poor,and the promotion effect on the germination of Cassia agnes seeds was not significant,with a swelling rate of 5.0%and a germination rate of 5.0%.