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不同种源单叶蔓荆对干旱胁迫的生理响应与耐旱性评价
引用本文:王连红, 苗杰, 左进城, 李保进, 陈丽英, 谭焕鹏, 姚明志. 不同种源单叶蔓荆对干旱胁迫的生理响应与耐旱性评价[J]. 西南林业大学学报, 2019, 39(1): 69-79.doi:10.11929/j.swfu.201804044
作者姓名:王连红  苗杰  左进城  李保进  陈丽英  谭焕鹏  姚明志
作者单位:1. 烟台市林业科学研究所,山东 烟台 26400;2. 鲁东大学生命科学学院,山东 烟台 264025;3. 蓬莱市林业局,山东 烟台 265600
摘    要:以19个不同种源单叶蔓荆当年生扦插苗为试材,在75%~80%(CK)、35%~40%(轻度干旱)、15%~20%(重度干旱)不同水分梯度下,研究不同干旱处理对单叶蔓荆叶片过氧化氢酶(CAT)、超氧化物歧化酶(SOD)、过氧化物酶(POD)活性,脯氨酸(Pro)、可溶性糖(SS)、可溶性蛋白(SP)、丙二醛(MDA)含量和枝条、叶面积增长量等生理生化及形态指标的影响。结果表明:随干旱胁迫程度加大,枝条、叶面积增长量降低;多数种源单叶蔓荆叶片CAT、SOD活性降低,POD活性升高;Pro、SP、MDA含量升高,SS含量呈不同的变化趋势。各指标变化趋势因种源不同而异,干旱胁迫对单叶蔓荆生理生化及形态指标均具有显著影响,且种源间差异显著。用聚类分析法将19个不同种源的单叶蔓荆耐旱性分为强、中、弱3类,采用隶属函数法加权重定量鉴定19个不同种源单叶蔓荆耐旱性,其中抗旱最强的有荣成(D19)、日照(D11)、幸福林场(D13),最弱的有大窑(D8)、大连(D15)、象山(D12)。

关 键 词:单叶蔓荆   种源   生理响应   耐旱性
收稿时间:2018-04-22

Physiological Response of Vitex trifolia var. simplicifolia from Different Provenances Under Drought Stress and Evaluation of Drought Tolerance
Lianhong Wang, Jie Miao, Jincheng Zuo, Baojin Li, Liying Chen, Huanpeng Tan and Mingzhi Yao. Physiological Response of Vitex trifolia var. simplicifolia from Different Provenances Under Drought Stress and Evaluation of Drought Tolerance[J]. Journal of Southwest Forestry University, 2019, 39(1): 69-79.doi:10.11929/j.swfu.201804044
Authors:Lianhong Wang  Jie Miao  Jincheng Zuo  Baojin Li  Liying Chen  Huanpeng Tan  Mingzhi Yao
Affiliation:1. Yantai Forestry Science Institute, Yantai Shandong 264013, China;2. School of Life Science, Ludong University, Yantai Shandong 264025, China;3. Penglai Foresty Bureau, Yantai Shandong 265600, China
Abstract:Using cutting seedlings of Vitex trifolia var. simplicifolia from 19 different provenances as test materials, this research investigated the physiological and morphological indices of leaf protective enzymes (CAT, SOD, POD), proline, soluble sugar, soluble protein, malondialdehyde (MDA) content, and the growth of branch and leaf area under different water gradient conditions (75%−80%, 35%−40%, 15%−20%). The results showed that when the drought stress increased, the growth of branch and leaf area decreased; the activity of CAT and SOD from most of the provenances decreased; the activity of POD increased; the content of proline, soluble protein and MDA increased, and the content of soluble sugar showed different trend. The variation trend of each index varied with different provenance, and drought stress had significant influence on the physiological and morphological indices ofV. trifolia var. simplicifolia, with significant difference between provenances. Using the method of cluster analysis, seedlings of V. trifolia var. simplicifolia from the 19 different provenances were divided into 3 categories of strong, medium and weak for drought resistance. Investigation of more accurate identification and comparison for drought resistance of the 19 different provenances were carried out using subordinate function values analysis. The results showed that the highest drought resistance of the 19 different provenances were: Rongcheng (D19)、Rizhao (D11)、Xingfulinchang (D13), and the most drought sensitive provenances were Dayao (D8)、Dalian (D15)、Xiangshan (D12).
Keywords:Vitex trifolia var. simplicifolia  provenances  physiological response  drought resistance
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