摘要
目的 :探讨在高温胁迫下半夏倒苗前后保护酶活力的变化 ,从而为防止半夏倒苗提供一定的信息。方法 :待半夏苗高 15cm左右时 ,进行 (30± 1)℃的高温胁迫 ,于不同的胁迫处理天数分别测定半夏叶片、叶柄和块茎中保护酶 (SOD ,POD ,CAT)活性和膜脂过氧化产物丙二醛 (MDA)的含量。结果与结论 :随着高温胁迫时间的延长 ,半夏叶片和叶柄中MDA含量显著增加 ,而块茎中MDA含量增加却不显著。高温胁迫后 ,SOD和CAT活性都逐渐下降。POD活性经高温胁迫后呈现先上升后又迅速下降的趋势。
Objective: To study the change of the activity of protective enzyme to avoid sprout tumble of Pinellia ternata. Method: A high temperature stress was given to P. ternata. Then the activity of protective enzyme (SOD,POD and CAT) and the content of membrane lipid peroxidation(MDA) were detected after different treating days. Result and Conclusion: By stress time increasing, the content of MDA in lamina and petiole increased obviously, but it increased invisibly in tuber. After high temperature stress, the activity of both SOD and CAT decreased gradually. The activity of POD increased at first but then decreased rapidly. [
出处
《中国中药杂志》
CAS
CSCD
北大核心
2004年第7期641-643,共3页
China Journal of Chinese Materia Medica
基金
安徽"十五"二期重点项目 ( 0 3 0 13 0 0 3 )
关键词
半夏倒苗
酶活力
丙二醛
高温胁迫
倒苗现象
Pinellia ternata
sprout tumble
protective enzyme
malondialdehyde(MDA)
high temperature stress
