Correlation between Inclusion Contents in Casuarina spp. Twigs and Its Resistance to Lymantria xylina

• Published in: Plant Diseases and Pests(植物病虫害研究：英文版) Vol. 5; no. 4; pp. 9 - 12
• Main Authors: Jinshui, Huang, Xiuqin, Lin, Shouping, Cai, Liqiong, Zeng, Yuzhu, Ke, Xueyou, He, Shunli, Chen
• Format: Journal Article
• Language: English
• Published: Cranston Wu Chu (USA-China) Science and Culture Media Corporation 01.08.2014
• Subjects: Casuarina; Lymantria xylina; 可溶性糖含量; 夹杂物含量; 总酚含量; 抗性菌株; 树枝; 耐药菌株; 蛋白质; 麻黄属
• ISSN: 2152-3932

[ Objective ] The paper was to explore the correlation between inclusion contents in Casuarina spp. twigs and its resistance to Lymantria xylina. [ Method] Three types of representative Casuar/na spp. strains including resistant strains （Zhanjiang 3, Hui 76, Hui 83, Guangdong A8-2）, moderate resistant strains （Pingtan 2, Hui 1, Long 7-18） and susceptible strains （Dongshan 2, Guangdong 501, Kang[eng） were tzst~ as materials to determine the contents of six kinds of inclusions, total phenol, tannin, flavonoids, protein, soluble sugar and polysaccharide. [ Result] The resistant strains had higher flavonaids, tannin and total phenol contents and lower soluble sugar and protein contents than the susceptible strains, while the content of polysaccharide acted randomly. The grey correla- tivity analysis showed that resistance degree, pupation rate and pupal weight had high correlation with protein and soluble sugar contents, with correlation index equal to or above 0.500 0. [ Conclusion] The study provided a theoretical basis for screening and promotion of resistant strains against L xylina.