摘要
为了确定草莓花的抗寒能力,比较不同草莓品种的抗寒性,以宁玉、红颊草莓花为试材,研究不同低温胁迫下组织电解质外渗率(REC)的变化,配合Logistic方程,测定其半致死温度(LT50);在半致死温度下设置不同时间,测定REC的变化。结果表明,随着处理温度的降低和处理时间的延长,宁玉、红颊草莓花的电解质外渗率呈S型曲线,LT50分别为-3.41℃、-2.78℃,1.5～3.5 h为草莓花在LT50下临界冷害时间。
In order to determine the cold hardiness of flowers of two strawberry varieties,＇Ningyu＇ and ＇Benihope＇,the semilethal temperatures（LT50） of them were calculated based on the changes in electrolyte leakage rates（REC） under different low temperature stresses and with the Logistic equation,the semilethal temperatures were detected.The results showed that with the temperature decreased and the treatment time prolonged,the RECs of the flowers of the two varieties showed a S-shaped curve,LT50 for ＇Ningyu＇ was-3.41 ℃ while that of ＇Benihope＇ was-2.78 ℃.The treatment time from 1.5 h to 3.5 h was the threshold of chilling injury at LT50.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2012年第2期255-258,共4页
Acta Agriculturae Universitatis Jiangxiensis
基金
江苏省农业科技自主创新项目(CX(10)109
CX(11)4051)
关键词
草莓花
半致死温度
抗寒性
strawberry flower
semilethal temperature
cold hardiness
