摘要
以落葵为试材,研究缺素(N、P、K、Fe)逆境下植物的生长情况。结果表明,缺素条件下,落葵的叶绿素、可溶性蛋白质、游离氨基酸含量以及保护酶系统中过氧化物酶、过氧化氢酶和超氧化物歧化酶活性均有不同程度的减弱。其中,缺Fe处理组的蛋白质含量减少最多,叶绿素含量少于完全培养的50%,且各保护酶含量均为最低;缺K处理组的丙二醛含量及叶片、根的膜透性均有所上升且差异显著,说明缺K对生物膜的影响最大。
The growth of Basella alba L. plants under nutrition （N ,P,K and Fe） -deficient conditions were studied in this study. The results showed that nutritional deficiency always caused varying degrees of reduction in the contents of chlorophyll,soluble pro-teins ,and free amino acids. Nutritional deficiency also caused a reduced activity for protective enzyme systems including peroxida-ses, catalases,and superoxide dismutases. Comparing to nor^mal nutrition culture,the Fe2＋-deficient treatment caused the largest re-duction of protein content with less than 50% of chlorophyll content and the low-est contents of protective enzymes. On the other hand,the K＋-deficient treatment resulted in an increase of malondialdehyde content and significant increase in membrane permeabil-ity of the leaf and root tissues. This indicated that K＋-deficiency had the greatest effect on membrane permeability.
作者
庄团达
黄碧阳
康娟
郑冬梅
温文旭
林志斌
李彩霞
王青萍
林碧英
ZHUANG Tuanda HUANG Biyang KANG Juan ZHENG Dongmei WEN Wenxu LIN Zhibin LI Caixia WANG Qingping LIN Biying(College of Horticulture,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002, Chin)
出处
《亚热带农业研究》
2016年第4期242-247,共6页
Subtropical Agriculture Research
基金
福建省科技厅重大专项(2014NZ0002-2)
福建省科技厅重点项目(2014N0022)
农业部推广项目(KNJ-152000)
关键词
落葵
缺素
生理指标
抗逆性
Basella alba L.
nutritional deficiency
physiological indices
stress resistance
