植物研究2018，Vol.38Issue(1)：64-74,11.DOI:10.7525/j.issn.1673-5102.2018.01.008
棘孢木霉组合应用对杨树生长和光合特性影响
Effects of Trichoderma asperellum Combined Application on Growth and Photosynthesis Characteristics of Populus davidiana × P.alba var.pyramidlis
摘要
Abstract
In order to prepare compound fungi fertilizer of Trichoderma asperellum,we studied the effects of T.asperellum combined application on the growth and photosynthetic characteristics of Populus davidiana × P.alba var.pyramidlis (Shanxin poplar) by applying the concentration (5 x 103 cfu · cm-3 soil) with different combinations of T.asperellum conidia T1 (Ta536 + Ta4),T2 (Ta536 + Ta4 + Ta492) and T3 (Ta536 + Ta4 +Ta492 + Ta650) to roots of the tissue-cultured Shanxin poplar seedlings under field conditions.Analysis of variance showed that the induction time and different treatments had significant effects on height,basal stem,chlorophyll content,chlorophyll a/b value,Pn,Cond,Ci and Tr (P ＜ 0.05):the seedling heights,basal stems and dry weights of the treatment groups were higher than those of control group(CK) in different degree,and the effect was T3 ＞ T2 ＞ T1 ＞ CK;the biomass of poplar seedlings of T3,T2 and T1 separately increased 17.99％ 、14.28％ and 10.54％ compared with CK at 60 d;at 15 d,chlorophyll contents separately increased 7.79％,6.91％ and 4.17％ and chlorophyll a/b values separately increased 7.79％,5.84％ and 4.73％ compared with CK.In addition,the net photosynthetic rate (Pn),intercellular CO2 concentration (Ci),stomatal conductance(Cond) and transpiration rate(Tr) of the treatment were higher than those of CK,and the maximum net photosynthetic rate,apparent quantum efficiency and light saturation point of the treatment groups were higher than those of CK (P ＜ 0.05).At the same time,the interaction between the inducing durations and the different treatments levels of T.asperellum also significantly influenced the above indexes(except for Pn and Ci) (P ＜0.05).In brief,combination of 4 strains had synergistic effects that can enhance the adaptability of these strains to environment,promote growth and improve photosynthesis characteristics,and the T3 group has the biggest influence and the fastest action on the poplar seedlings.关键词
山新杨/棘孢木霉/协同作用/促生长/光合作用Key words
Populus davidiana x P.alba var.pyramidlis(Shanxin poplar)/Trichoderma asperellum/synergistic effect/growth promotion/photosynthesis分类
农业科技引用本文复制引用
刘照莹,姜传英,翟彤彤,常媛,姚志红,刘志华,张荣沭..棘孢木霉组合应用对杨树生长和光合特性影响[J].植物研究,2018,38(1):64-74,11.基金项目
The National Natural Science Foundation of China(NSFC:31370642) （NSFC:31370642）
Heilongjiang Province Post doctorate science foundation (LBH-Q11176)国家自然科学基金资助项目(31370642) （LBH-Q11176）
黑龙江省博士后科研启动金资助项目(LBH-Q11176) （LBH-Q11176）
