柚木嫩枝生理生化指标对扦插生根的影响  

Impact of Physiological and Biochemical Indices on Rooting of Soft-wood Cutting Propagation for Tectona grandis

作　　者：黄永芳[1] 曾炳山[2] 杨懋勋[1,3] 周锦平[1] 林伟[1] 

机构地区：[1]华南农业大学林学院,广东广州510642 [2]中国林业科学研究院热带林业研究所,广东广州510520 [3]中山火炬职业技术学院生物医药系,广东中山528436

出　　处：《福建林业科技》2014年第3期106-110,共5页Journal of Fujian Forestry Science and Technology

基　　金：科技部农业科技成果资金项目(柚木组培苗微扦插移植及优良无性系示范;2011GB24320001)

摘　　要：以4年生柚木的当年生半木质化嫩枝为插穗,5—9月的每月下旬扦插1次,同期测定插穗可溶性糖、全氮、可溶性蛋白质含量和过氧化物酶活性等生理生化指标,研究插穗生理生化指标对扦插生根的影响。结果表明:柚木嫩枝不同生长期的过氧化物酶活性、可溶性糖含量、全氮含量、碳氮比、生根率均有极显著差异(P<0.01),可溶性蛋白质含量差异不显著(P>0.05);碳氮比和生根率之间的正相关性较高。柚木嫩枝扦插的最适时期是7—8月。The softwood cuttings propagation experiment using the half-lignified twigs of 4-year-old Tectona grandis L.f.was per-formed in the last ten-days of May,June,July,August and September.The variation of the soluble sugar ,total nitrogen,ratio of C/N, soluble protein,activity of peroxidase,etc,were studied in the same time,in order to discuss the impact of physiological and biochem-ical indices on rooting of cuttings propagation.The results showed that ,in different sprouting period ,differences of peroxidase ,soluble sugar,total nitrogen,ratio of C/N,rootage ratio are significant at 1%,differences of soluble protein are not significant;Positive rela-tivity between ratio of C/N and rootage ratio is quite high.The best time of softwood cuttings propagation for Tectona grandis L.f.in 4 years old is in July to August.

关 键 词：柚木 嫩枝扦插 生理生化指标 生根率 

分 类 号：S723.132.1[农业科学—林木遗传育种]