油茶湘林11号无性系嫁接苗的抗旱性研究  

Study on drought resistance on grafted seedlings from Camellia Xianglin No.11 clone

作　　者：周招娣[1,2] 叶航[1] 马锦林[1] 张日清[2] 王东雪[1] 

机构地区：[1]广西壮族自治区林业科学研究院,广西特色经济林培育与利用重点实验室,广西油茶良种与栽培工程技术研究中心,广西南宁530002 [2]中南林业科技大学经济林培育与保护省部共建教育部重点实验室,湖南长沙410004

出　　处：《中南林业科技大学学报》2015年第2期54-58,共5页Journal of Central South University of Forestry & Technology

基　　金：广西科学研究与技术开发计划项目课题(桂科攻1123004-2A);广西农业良种培育与示范项目"(桂科能1347013-1);广西科学研究与技术开发计划项目任务书(桂科攻1123004-1E)

摘　　要：本文以普通油茶为对照,在人为控水模拟自然干旱的条件下,通过测定嫁接苗叶片的永久萎焉系数、叶片相对含水量、超氧化物歧化酶活性等抗旱指标,研究了陆川油茶、广宁红花油茶、香花油茶作砧木的湘林11号一年生嫁接苗的抗旱性。结果表明:香花油茶嫁接苗永久萎焉系数为1.34,显著低于普通油茶、陆川油茶和广宁红花油茶嫁接苗分别为1.63、1.58和1.69,表现出较强的抗旱性;通过主成分分析和隶属函数值综合评定,4个物种作砧木的湘林11号嫁接苗的抗旱性依次为香花油茶>普通油茶>陆川油茶>广宁红花油茶,香花油茶作砧木明显提升了嫁接苗的抗旱性。Use Camellia oleifera as the control, through artificial control of watering to make the nursery soil naturally dry, the drought resistance functions of one-year-old Xianglin No.11 clone grafted seedlings with C. vietnamensis, C.semiserrata, C.osmantha as the root stocks respectively, were investigated, the seven drought resistance indexes of the grafted seedling leaves under the condition of continuous drought stress, including leaf wilting coefficient, leaf relative water content, SOD, POD, MDA, free proline concentration and soluble protein content were quantitatively measured. The results show that wilting coefficient of C.osmantha grafted seedling was 1.34, significantly lower than the coefficients of C.oleifera, C.vietnamensis and C.Semiserrata grafted seedling（1.63,1.58 and 1.69 respectively）, C.osmantha grafted seedling showed stronger drought resistance; By principal components analysis and subordinate function value comprehensive assessment, the drought-resistance indexes of Xianglin No.11 clone grafted seedlings with four species as the root stocks ranked from large to small as follows： C. osmantha Camellia oleifera C. vietnamensis C. semiserrata, therefore, C. osmantha as root stock can significantly improve the drought resistance of Camellia Xiang Lin 11 clone grated seedling.

关 键 词：砧木 湘林11号无性系 抗旱性 隶属函数 

分 类 号：S794.4[农业科学—林木遗传育种] S603.8[农业科学—林学]