组织培养下盐胁迫紫花苜蓿种子的萌发特性研究  

The Effect of Seed Germination of Salt-tolerant on Alfalfa in Vitro Culture

作　　者：马进[1] 王小德[1] 郑钢[1] 

机构地区：[1]浙江林学院园林学院,浙江临安311300

出　　处：《种子》2008年第7期29-31,共3页Seed

基　　金：浙江省自然基金资助(Y304072)

摘　　要：以紫花苜蓿品种Victoria种子为材料,研究组织培养下盐胁迫紫花苜蓿种子的发芽率、相对发芽率及胚根胚芽的生长。结果表明:随盐浓度升高,紫花苜蓿种子发芽的时间推后。低盐浓度在短时间内对紫花苜蓿的种子萌发和生长有促进效应。紫花苜蓿耐盐半致死浓度为133.1 mmol/L,耐盐极限浓度为224.0 mmol/L。盐胁迫对胚根抑制作用大于胚芽。Seeds of alfalfa （Medicago sativa L. ） varieties, cv. Victoria has been studied by measuring seed germinating rate, relative germination rate, extension of radicle and embryo of salt-tolerant Alfalfa in Vitro. The results show that time of seed germination has been delayed with the increasing salt concentration in the seedling period but seed germination and growth has been improved in a short time. Its semi-lethal concentration was 133.1 mmol/L, and its limit concentration was 224.0 mmol/L. Lengths of radicles has been more decreased than the lengths of embryos in salt-tolerant.

关 键 词：紫花苜蓿 组织培养 盐胁迫 种子萌发 

分 类 号：S551.7[农业科学—作物学]