西北师范大学学报（自然科学版）2012，Vol.48Issue(3)：84-87,4.
不同温度下中国沙棘种子的萌发策略
Seed germination strategy of Hippophae rhamnoides L subsp sinensis Rousi at different temperature
摘要
Abstract
To search seed germination strategy of Hippophae rhamnoides L subsp sinensis Rousi, seed germination responses at different temperature are examined here. The results show the germination percentage at 15 ℃ , 20℃ and 25℃ are more than 88% and significantly higher than the germination percentage at 30 ℃(73. 33%) and 35℃ (4. 67%). At the end of germination, the length of radicle and hypocotyls are also significantly longer than that at higher temperature(30℃ ,35℃). The germination percentage, germination energy and the length of radicle and hypocotyls are inhibited under the higher temperature. In addition, seeds of H rhamnoides subsp sinensis begin to germinate within 3~4 days and last for 7～15 days under each temperature treatment. These characteristics indicate that H rhamnoides subsp sinensis is different from the other plants of Hippophae from Qinghai-Tibet plateau of china in germination strategy.关键词
中国沙棘/种子萌发/温度/萌发策略Key words
Hippophae rhamnoides L subsp sinensis Rousi s seed germination j temperature/ germination strategy分类
农业科技引用本文复制引用
孙坤,吕小旭,苏雪,王瑞雪,侯勤正..不同温度下中国沙棘种子的萌发策略[J].西北师范大学学报（自然科学版）,2012,48(3):84-87,4.基金项目
国家自然科学基金资助项目(30960029,31160046) （30960029,31160046）
