钙与吸胀的绿豆种子脱水耐性的关系  

Relationship Between Desiccation Resistance of Imbibed Mung Bean Seeds and Calcium

作　　者：钱春梅[1] 郑雪宜[1] 檀诗前[1] 宋松泉[2] 

机构地区：[1]华南农业大学生命科学学院,广东广州510642 [2]中国科学院西双版纳热带植物园,云南勐仑666303

出　　处：《种子》2005年第11期7-9,66,共4页Seed

基　　金：华南农业大学校长基金项目(2003K014);华南农业大学科技创新活动项目资助

摘　　要：外加Ca2+能有效的减低吸胀绿豆种子的脱水伤害,适宜的Ca2+浓度为5 mmol/L。Ca2+专一性螯合剂EGTA、二价离子螯合剂EDTA、钙调素(CaM)抑制剂TFP、Ca2+通道抑制剂Co2+都能降低吸胀绿豆种子脱水后的生长和存活能力。加入Ca2+能够部分解除EGTA、EDTA、TFP和Co2+的抑制作用。说明Ca2+与种子的脱水耐性密切相关。The effect of Ca^2＋ treatment on seed desiccation tolerance was studied in this paper. The results indicated that Ca^2＋ could increase seed desiccation tolerance and optimal Ca^2＋ concentration was about 5 mmol/L. The seeds＇ survival and growth were decreased by additional EGTA （a specific Ca^2＋ chelator）, EDTA （a Ca^2＋ chelator） ,TFP （a calmodulin inhibitor）,Co^2＋ （a calcium channel blocker）, but the function of EGTA ,EDTA ,TFP, Co^2＋ were partially decreased by the additional Ca^2＋. All these showed that desiccation tolerance of Mung bean seeds was closely related to calcium.

关 键 词：绿豆种子 脱水耐性 CA^2+ 螯合剂 

分 类 号：S522[农业科学—作物学] Q945.65[生物学—植物学]