摘要： 用GA3（赤霉素），硫脲，KNO3，H2O2不同浓度或不同时间浸泡处理菠菜、茼蒿、芫荽劣变种子，结果表明，GA3对3种种子的萌发没有明显促进作用，且过高的浓度会抑制种子萌发；02%的硫脲对菠菜、芫荽种子萌发效果较好，发芽率分别比对照提高23%和30%，茼蒿以0.5%的浓度为适宜，发芽率比对照提高31%；KNO3处理3种种子均以0.2%效果最好，菠菜、茼蒿、芫荽的发芽率分别比对照提高24%，12%，14%；H2O2处理只对菠菜种子有效，浸泡5，10min，发芽率分别提高18%，20%。发芽势也有所提高。测定浸出液电导率、紫外吸收表明，各有效处理相对电导率及紫外吸收均比处理低，表明化学药剂处理种子均导致无机离子和核酸、蛋白质等有机物的渗出减少。说明药剂处理种子对细胞膜系统具有一定的保护和修复作用。
关键词:
劣变种子,
发芽率,
发芽势,
电导率,
紫外吸收
Abstract: The seeds of Spinacea oleracea,Chrysandthemum coron vium,Coriandrum satium were treated with GA3,Thiourea,KNO3 and H2O2 at various concentrations respectively.The results showed that GA3 slightly promoted at low concentration or inhibited athigh concentration the germination of three seeds,in contrast,the germination of three kind of seeds was promoted by usi ng Thiourea solution with optimal concentration of 0.2% for spinacea olera cea and coriandrum satium,0.5% for coriandrum satium KNO3 with 0.2% concentrationhad the best effect for three kind of seeds,but 30% H2O2 only had primitive ef fective for spinacea oleracea.Treatment with KNO3 Thiourea reduced electrolytes and UV absorbent substances leaked from the effective treated seed,which sugge sted that Thiourea,KNO3 can keep the stability of cell membrane.
Key words:
Deteriorated seeds,
Germination percentage,
Germination potential,
Electrotyte,
UV absorbance
中图分类号:
王广东, 周素平, 吴震, 谢海燕, 李式军. 几种化学药剂处理对蔬菜劣变种子生活力的影响[J]. 华北农学报, 2000, 15(2): 123-127. doi: 10.3321/j.issn:1000-7091.2000.02.026.
WANG Guangdong, ZHOU Suping, WU Zhen, XIE Haiyan, LI Shijun. Effect of Several Chemicals on the Germination Percentage of Ve getable Seeds[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2000, 15(2): 123-127. doi: 10.3321/j.issn:1000-7091.2000.02.026.