摘要
蒲葵种子自60～200 DAA(DAA表示花后天数),含水量和电导率逐渐降低,果实及种子千粒重、种子干重和生活力逐渐增大。130 DAA达到生理成熟,190 DAA完全成熟。60～190 DAA种子脱水耐性不断增强,190 DAA最大。蒲葵种子适宜萌发温度为20～35℃。含水量为20%和24%的种子分别在4℃和15℃下保存一段时间后,生活力逐渐降低,电导率却增加。
The fruit and seed 1 000-grain weight, seed dry weight, germination percentage of Livistona chinensis rose gradually with the seed developing time from 60 DAA （Days after anthesis） to 200 DAA, but the seed moisture content and electric conductivity rate decreased at the same time. Seed continues growing up to 130 DAA,and it was fully matured at 190 DAA. The desiccation tolerance of seeds rose gradually from 60 to190 DAA, when it reached the highest dehydration tolerance. The suitable temperature for the germination of Livistona chinensis seeds was between 20 ℃ and 35 ℃. The viability of the seed with 20% and 24% moisture content decreases gradually, while the electric conductivity rate showed gradual increased after stored at 4 ℃ and 15 ℃ for a while,and it was better for the seed with 24% moisture content to be stored at 4 ℃.
出处
《种子》
CSCD
北大核心
2011年第8期50-54,共5页
Seed
基金
重庆市动物学重点学科拓展研究开放课题(2008)资助
关键词
蒲葵
种子萌发
脱水耐性
种子贮藏
Livistona chinensis
seed germination
desiccation tolerance
seed storage
