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Effects of Trichoderma asperellum on Leaf Photosynthesis of Tissue-cultured Populus davidiana×P.bolleana Loucne Seedlings Transplanted into Pots(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年23期
Page:
78-82
Research Field:
Publishing date:

Info

Title:
Effects of Trichoderma asperellum on Leaf Photosynthesis of Tissue-cultured Populus davidiana×P.bolleana Loucne Seedlings Transplanted into Pots
Author(s):
WANG Hui1；LIU Zhi-hua2；LV Man-man1；TANG Lei3；ZHU Guo-dong1；ZHANG Rong-shu1
1.College of Landscape Architecture，Northeast Forestry University，Harbin，Heilongjiang 150040
2.School of Forestry，Northeast Forestry University，Harbin，Heilongjiang 150040
3.College of Life Sciences，Northeast Forestry University，Harbin，Heilongjiang 150040
Keywords:
Trichoderma asperellum; Populus davidiana×P.bolleana Loucne; photosynthesis; light response characteristics
PACS:
S 792.11
DOI:
-
Abstract:
Taking tissue-cultured seedlings of Populus davidiana×P.bolleana Loucne as experimental material，through pot experiment，the effects of root application of Trichoderma asperellum ACCC30536 conidia of T1 (5×102 cfu/cm3 soil)，T2 (5×103 cfu/cm3 soil) and T3 (5×104 cfu/cm3?soil) on photosynthetic diurnal variation and light response curve parameters of P.davidiana×P.bolleana Loucne seedlings were studied.The results showed that T2 inducing had the best effects.In T2 induced seedlings，net photosynthetic rates (Pn) were higher than CK and T1，T3 induced seedlings.The daily net photosynthetic rates curve showed one peak，which coincided with that of the CK and reached peak at about 12:30，after which the curve gradually went downwards.In T2 induced seedlings，daily curves of transpiration rate (Tr)，stomatal conductance (Cond)，intercellular CO2 concentration (Ci) were all in accordance with control while the values were higher than CK.In T2 induced seedlings，the light response curve parameters namely the maximum net photosynthetic rate (Pnmax)，apparent quantum efficiency (AQY)，light saturation points (LSP) were all higher than those of CK and T1，T3 induced seedlings.All these results led to a conclusion that T.asperellum spore suspension had a positive influence on the photosynthesis of P.davidiana×P.bolleana Loucne seedlings and the best inducing concentration was 5×103 cfu/cm3 soil.

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Last Update: 2014-08-18