喀斯特山区野生葡萄实生苗叶片解剖结构与抗旱性的关系  

Correlation between Drought Resistance and Leaf Anatomical Structure of Wild Vitis quinquangularis Seedlings in Karst Mountainous Areas

作　　者：潘学军[1,2] 张文娥[3] 杨秀永[3] 李顺雨[1,2] 

机构地区：[1]贵州大学喀斯特山地果树资源研究所,贵州贵阳550025 [2]贵州省果树工程技术研究中心,贵州贵阳550025 [3]贵州大学农学院,贵州贵阳550025

出　　处：《贵州农业科学》2010年第9期176-178,182,共4页Guizhou Agricultural Sciences

基　　金：贵州省省长基金项目"西南喀斯特地区野生葡萄资源鉴选与新种质创建"[黔省专合字(2006)10];贵州省果树学科科技创新人才团队建设项目"果树学科技创新人才团队"[黔科合人才团队(2008)88007];贵州省果树工程技术研究中心建设项目"贵州省果树工程技术研究中心建设"[黔科合农G字(2007)4001]

摘　　要：以4份2年生野生葡萄实生苗为试材,通过塑料大棚盆栽试验,研究了自然干旱胁迫下喀斯特山区野生葡萄叶片组织解剖结构与抗旱性的关系。结果表明,在干旱胁迫过程中,野生葡萄叶片厚度、栅栏组织厚度、海绵组织厚度、CTR值等结构参数指标均与野生葡萄种质抗旱性存在密切的关系。抗旱性强的野生葡萄随着干旱胁迫程度的加重,叶片失水变薄,但栅栏组织厚度降幅较小,CTR出现先升高后降低的趋势,降幅较小;抗旱性弱的野生葡萄叶片厚度、栅栏组织和海绵组织及叶片组织紧密度降幅较大。干旱胁迫下,各项叶片解剖指标与旱害指数存在着显著或极显著关系。The seedlings of four lines from three wild Vitis quinquangularis varieties with two-year age were planted in pots under natural drought stress to study correlation between leaf anatomical structure and drought resistance.The results showed that the parameters of leaf thickness,palisade tissue thickness,spongy tissue thickness and CTR were closely correlated to drought resistance of wild Vitis quinquangularis germplasms under drought stress.The leaf thickness of wild Vitis quinquangularis seedlings with high drought resistance was becoming thinner because of water loss but change of the palisade tissue thickness was slight,CTR increased first and then decreased,and the decrease range of leaf thickness,palisade tissue,spongy tissue and leaf tissue CTR of wild Vitis quinquangularis seedlings with low drought resistance was great.There were significant and very significant correlations between different leaf anatomical indexes and drought index under drought stress.

关 键 词：野生葡萄 干旱胁迫 抗旱性 旱害指数 叶片解剖结构 喀斯特山区 

分 类 号：S663.1[农业科学—果树学]