黑麦草不同品种响应植被砼干热生境的表型特征  

Appearance characteristics of Lolium perenne Linn.different varieties in vegetation concrete to drough and heat stress

作　　者：杨杰峰[1] 邓红华 费永俊[2] YANG Jie-feng;DENG Hong-hua;FEI Yong-jun(Hubei Ecology Polytechnic College,Wuhan 430200,China;College of Gardening and Horticulture,Yangtze University,Jingzhou 434025,Hubei,China)

机构地区：[1]湖北生态工程职业技术学院,武汉430200 [2]长江大学园艺园林学院,湖北荆州434025

出　　处：《湖北农业科学》2021年第16期101-105,共5页Hubei Agricultural Sciences

基　　金：湖北省科技厅攻关项目(2002AA3001C99);湖北省教育厅重大科研项目(2002Z0007);湖北省教育厅优秀中青年科技创新团队资助项目(鄂教科[2003年7号]文-12);湖北省涝渍灾害与湿地农业重点实验室开放基金项目(HNKFJ2002C03);国家教育部新世纪优秀人才支持计划项目(2005-2007)

摘　　要：以植被砼生境上的黑麦草(Lolium perenne Linn.)3个品种(Barverdi、Medalist、Accent)为试材,分别进行干热胁迫处理后,测定其伤害比率、叶色、质地、气孔密度和长宽比指标及其恢复能力。结果表明,3个品种的叶色变浅,叶宽减小,伤害表现显著。耐干热性依次为Accent>Medalist>Barverdi,气孔大小为Barverdi>Medalist>Accent,气孔密度为Accent>Medalist>Barverdi。综合评价表明,Accent耐干热性最强。Three varieties of ryegrass(Lolium perenne Linn.)(Barverdi,Medalist and Accent)in vegetation concrete habitat were used as experimental materials,after treatment by dry heat stress,their injury degree,leaf color,texture,stomatal density and length width ratio were measured,and their recovery ability was also tested.The results showed that the leaf color of three varieties of ryegrass became lighter,the leaf width decreased,and the damage degree was significant.The order of dry heat resistance was Accent>Medalist>Barverdi,the order of stomatal size was Barverdi>Medalist>Accent,and the order of stomatal density was Accent>Medalist>Barverdi.Comprehensive evaluation showed that Accent had the strongest dry heat resistance.

关 键 词：黑麦草(Lolium perenne Linn.) 干热胁迫 气孔 

分 类 号：Q945.78[生物学—植物学] S688.4[农业科学—观赏园艺]