油茶抗炭疽病优良单株筛选及抗病机理研究  

Mechanism of resistance and Colletotrichum gloeosporides in resistant individual trees of Camellia oleifera

作　　者：陈彧[1] 周国英[1] 宋光桃[1] 刘君昂[1] 董晓娜[1] 苟志辉[1] 

机构地区：[1]中南林业科技大学生物技术中心,湖南长沙410004

出　　处：《湖南农业大学学报（自然科学版）》2010年第4期426-429,共4页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家科技支撑计划项目(2006BAD08A1104;2009BADB1B0204);国家林业局重点项目(2006-47)

摘　　要：通过4年自然感病性调查和3年人工接种鉴定,从湖南常宁油茶基地筛选出抗病优良单株林大140,其自然感病率为0,人工接种果感病率为0,鲜出籽率53%,种仁含油率为54%.单株抗病的生化机制结果表明:果皮滤液孢子萌发率与感病性呈正相关;接种4d内,过氧化物酶活性显著提高,提高幅度与抗病性呈正相关;超氧化物歧化酶活性下降,下降幅度与抗病性呈正相关.Linda 140, a strain of the Camellia oleifera with high resistance, was obtained from Changning, Hunan, Camelliae olifara Abel produced areas. Its natural inoculation incidence was zero, fresh produced seed rate 53% and kernel oil rate 54%. The physiological biochemistry of resistance results revealed that the spore germination rate and the rate of infection had positive relativity. The POD activities were up while the SOD activities were down after inoculation. The change ranges in the POD and SOD activity was positive relativity with diseased resistance to Colletotrichum gloeosprioides within 4 d after inoculation.

关 键 词：油茶 炭疽病 抗病品种 生化机制 

分 类 号：S794.404[农业科学—林木遗传育种]