| The effect of Trichoderma conidia and chlamydospores on physiological characteristics of cucumber seedlings and control effect against Fusarium wilt |
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| DOI：10.7606/j.issn.1000-7601.2021.02.29 |
| Key Words: Trichoderma spore cucumber seedling physiological characteristics fusarium wilt control efficacy |
| Author Name | Affiliation | | LIAN Hua | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | CHEN Yurong | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | LI Mei | Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | LIANG Xiao | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | MA Guangshu | College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China |
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| Abstract: |
| The effect of different types of spores of three Trichoderma strains on the seedling growth, physiological characteristics, and control effects against fusarium wilt of cucumber through a pot culture were evaluated. The three Trichoderma strains were Trichoderma harzianum 809, Trichoderma pseudokoningii 886, and Trichoderma asperellum 525 with anti-fusarium oxysporum capability. The results showed that the control effects of conidia and chlamydospore of three Trichoderma strains against cucumber fusarium wilt were all above 66.81%, and chlamydospore of T. asperellum 886 was the most effective one, with disease control efficacy of 81.46%. Compared with CK, plant height, stem diameter, root volume, leaf area, and fresh weight of the whole plant of cucumber seedlings significantly improved under conidia and chlamydospores of three Trichoderma strains at three leaves and one heart period, chlamydospore of T. asperellum 886 was the most effective one, and plant height, stem diameter, root volume, leaf area, and fresh quality of the whole plant of cucumber seedlings increased by 85.33%,108.43%, 235.29%, 144.38% and 272.32%, respectively, compared with CK. At the same time, chlorophyll content, root activity, leaf soluble sugar content, and leaf soluble protein content of cucumber seedlings significantly improved under conidia and chlamydospores of three Trichoderma strains at three leaves and one heart period compared with that of CK, and chlamydospore of T. asperellum 886 was the most effective one, and chlorophyll content, root activity, leaf soluble sugar content, and leaf soluble protein content of cucumber seedlings increased by 97.47%, 86.05%, 172.49%, and 201.91%, respectively, compared with that of CK. |
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