黑松组培再生植株的感病性及生长性状评价  

Susceptibility and evaluation of growth traits about the tissue of Pinus thunbergii

作　　者：唐颖[1] 吴小芹[1] 叶建仁[1] 

机构地区：[1]南京林业大学,江苏省有害生物入侵预防与控制重点实验室,江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2011年第2期31-34,共4页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家林业局林业公益性行业科研专项(200704026)

摘　　要：比较了黑松组培苗和实生苗对松材线虫的感病性,同时对苗木的生长性状进行了系列观察。结果表明,在生长性状方面:组培苗早期生长缓慢,6个月后生长势优势明显,分蘖率高,但斜生现象严重,性状明显比实生苗成熟;2年生组培苗根系比实生苗粗壮,侧根发达。在抗病性方面:与实生苗相比,组培苗表现感病症状较早,感病率上升迅速,同时段内的感病指数高1～2级。另外,实生苗能够在低感病级别上维持较长时间,组培苗的感病性与代数之间并无明显相关性。In this paper,the susceptibility to pine disease between tissue culture plantlet and seedling of P.thunbergii were compared.Meanwhile,growth traits were under inverstigation.The results showed that： for growth traits,the tissue culture plantlet grew slower,but it grew faster and had higher rate of tillering than seedling 6 months later.Furthermore,it had serious phenomenon of incline when compared to seedling.The root was stronger and lateral root developed better on 2-year-old tissue culture plantlet than on seedling.In susceptibility,the susceptibility of tissue culture plantlet was a little higher than seedling.The susceptible symptoms of tissue culture plantlet appeared earlier,and its infection rate was 1—2 times higher than seedling at the same developmental stage,thus changed more evidently.Moreover,seedling could keep at a low susceptible level for a long time.There was no obvious correlation between the generations and susceptibility for tissue culture plantlets.

关 键 词：组培苗 松材线虫病 抗病性测定 性状评价 

分 类 号：S763[农业科学—森林保护学]