结缕草属植物抗旱性评价  

Evaluation of resistance to drought of different Zoysia species

作　　者：方敏彦[1] 章明 周猛 FANG Minyan;ZHANG Ming;ZHOU Meng(Jiangsu Vocational College of Agriculture and Forestry,Jurong 212400,China;Jurong Garden Management Center,Jurong 212400,China)

机构地区：[1]江苏农林职业技术学院,江苏句容212400 [2]句容市园林管理中心,江苏句容212400

出　　处：《北方农业学报》2020年第6期103-107,共5页Journal of Northern Agriculture

基　　金：江苏农林职业技术学院培育类项目(2018kj39);奥林高尔夫教育与研究基金项目(AL2014004)。

摘　　要：【目的】在前期初步筛选的基础上,对5种不同生境结缕草属植物进行抗旱性评价。【方法】采用聚乙二醇6000(PEG-6000)模拟干旱法,通过枯黄率、叶片含水量、叶绿素、丙二醛、脯氨酸含量等指标变化情况判断植物的抗旱性。【结果】随着干旱胁迫的加剧,5种结缕草枯黄率和脯氨酸含量逐渐增加,叶片含水量和叶绿素a/b逐渐降低,15%PEG-6000处理的结缕草生理指标受到严重影响。由隶属函数值可知,5种不同结缕草的抗旱性由强到弱顺序为:M7>8H>M11>M14>M1。【结论】不同生境下的5种结缕草属植物能够筛选出抗旱品种,可进一步应用于自然状态下干旱地区的推广种植。【Objective】Based on the preliminary screening,resistance to drought for 5 Zoysia species under different habitats was evaluated.【Methods】Using PEG-6000 to simulate drought,resistance to drought of plants was judged based on the changes in indicators such as withered leaf rate,leaf water content,chlorophyll,malondialdehyde and proline.【Results】Withered leaf rate and proline content of 5 Zoysia species increased gradually with the increase of drought stress,while leaf water content and chlorophyll a/b decreased gradually.The physiological indicators of Zoysia species treated with 15%PEG-6000 were effected.According to the value of membership function,the order of drought resistance of 5 Zoysia species was M7>8H>M11>M14>M1.【Conclusion】The drought-resistant varieties could be selected from 5 Zoysia species under different habitats,and could be further applied to the cultivation in arid areas under natural conditions.

关 键 词：抗旱性 结缕草属植物 PEG-6000 生理特性 

分 类 号：S668.4[农业科学—果树学]