摘要
以白果强丰番茄品种为试材,研究了100 mmol/L NaCl盐胁迫下,0、0.1、0.25、0.35和0.5 mmol/L亚精胺(Spermidine,Spd)对番茄种子的发芽率、发芽势、发芽指数、活力指数、MDA含量和相对电导率的影响。结果表明:在低浓度范围内,随着Spd浸种浓度的升高,番茄种子的发芽率、发芽势、发芽指数、活力指数均逐渐升高,MDA含量和相对电导率逐渐降低。而高浓度的Spd浸种处理的番茄种子MDA含量和相对电导率增加,发芽率、发芽势、发芽指数和活力指数降低,并低于对照处理。总之,当Spd浓度为0.25 mmol/L时作用效果最佳。
The tomato cuhivar ＇Baiguoqiangfeng＇ were chose as material, tomato seed were soaked with different concen- tration of Spd （0,0. 1,0. 25,0. 35,0. 5 mmol/L）, we studied the effect of Spd on the germination rate, germination vigor, germination index, vigor index, MDA concentration and relative electrolytic leakage of seed under 100 mmol/L NaCI stress. The results showed, in the range of low concetration, the germination rate, germination vigor, germination index and vigor index were increased, and MDA concentration and relative electrolytic leakage were decreased gradually with the rise of Spd concentration in seed soaking. However, MDA content and relative electrolytic leakage were increased, and the germination rate, germination vigor, germination index and vigor index were lower than CK when seeds were treated with too higher concent of Spd. When the concentration of Spd reached 0. 25 mmol/L, the effect was best.
出处
《北方园艺》
CAS
北大核心
2009年第7期1-3,共3页
Northern Horticulture
基金
"十一五"国家科技支撑计划资助项目(2007BAD79B04)
关键词
亚精胺
盐胁迫
番茄种子
种子萌发
Spermidine
NaCI stress
Tomato seed
Seed germination
