摘要
为探讨木麻黄小枝内含物与其对木毒蛾抗性的关系,明确其抗性机理,对抗虫品系湛江3、惠76、惠83、广东A8-2,中抗品系平潭2、惠1、龙7-18,感虫品系东山2号、广东501、抗风10个木麻黄品系的黄酮、单宁、总酚、蛋白质、可溶性糖、多糖6种内含物含量进行了测定和分析比较。结果表明:总体上木麻黄小枝内次生物质黄酮、单宁、总酚在抗性品系中含量较高,在感虫品系中含量较低;而蛋白质和可溶性糖却在感虫品系中较高,在抗虫品系中较低;多糖含量则无明显规律性。灰色关联度分析结果显示,抗虫等级、平均化蛹率和平均蛹重均与蛋白质含量和可溶性糖含量关联系数较大,均大于或接近0.500 0。
Lymantria xylina is an arch-defoliator to Casuarina spp. Ten strains including 4 high resistance strains Zhanjiang 3, Hui76, Hui83 and Guangdong A8-2, 3 medium resistance strains Pingtan 2, Hui 1 and Long 7-18, and 3 susceptible strains Dongshan 2, Guangdong 501 and Kangfeng were chosen to study the correlation of the inclusions of Casuarina spp. twigs and the resistance to Lymantria xylina. Results revealed that the high resistance strains had a higher secondary metabolites as flavonoids, tannins and total phenols contents and a lower soluble sugar and gross protein contents than the susceptible strains, while the content of polysaccharide reacted randomly. The grey correlativity analysis results showed that resistance degree, pupation rate and pupal weight had high correlation with both gross protein and soluble sugar, with correlation index above 0.500 0.
出处
《热带作物学报》
CSCD
北大核心
2014年第2期329-332,共4页
Chinese Journal of Tropical Crops
基金
国家科技支撑计划课题资助项目(No.2009BADB2B02)
福建省林木种苗科技攻关及省林业科学研究项目(闽林科[2013]6号)
国家林业局南方山地用材林培育
福建省森林培育与林产品加工重点实验室资助项目
关键词
木麻黄
小枝
内含物
木毒蛾
抗性机理
Casuarina spp.
Twigs
Inclusions
Lymantria xylina Swinhoe
Resistance mechanism
