摘要
通过在人工培养箱内模拟环境条件,探讨了不同光照和温度对白花鬼针草和金盏银盘种子萌发的影响,结果表明:光照和温度不是白花鬼针草种子萌发的必要条件,白花鬼针草种子萌发的温度适应范围比金盏银盘宽,在15℃/10℃、20℃/15℃、25℃/20℃、30℃/25℃、35℃/30℃、40℃/35℃下均能萌发,在15℃/10℃、20℃/15℃、25℃/20℃、30℃/25℃时萌发率均达94%左右,金盏银盘种子在40℃/35℃时不能萌发;温度影响白花鬼针草和金盏银盘种子萌发高峰的出现时间及峰值大小,而光照不影响。
Bidens alba L. is an invasive alien weed,and B. biternata L. is its congener. The effects of different light and temperature conditions on seed germination of B. alba and B. biternata were studied by simulating environmental condi- tions in climatic chambers. B. alba adaptive temperature range for seed germination was wider than that of B. biternata. B. alba was able to germinate at temperat/ares from 15 ℃/10 ℃ to 40 ℃/35 ℃ ,with its germination percentage being about 94% under temperatures from 15 ℃/10 ℃ to 30 ℃/25 ℃. B. biternata seed did not germinate at 40 ℃/35 ℃. Temperature could affect the time of germination peak and height of the seedlings of both species but light had no differen tial effect.
出处
《杂草科学》
2013年第4期1-4,共4页
Weed Science
基金
国家自然科学基金(编号:31260154)
广西壮族自治区自然科学基金(编号:2011GXNSFE018005)
关键词
白花鬼针草
金盏银盘
种子萌发
光照
温度
B/dens alba L.
Bidens biternata L.
seed germination
light
temperature
