|Table of Contents|

Inhibition of Trichoderma on Main Fungal Diseases of Apple and Its Colonization in Soil

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年06
Page:
15-22
Research Field:
Publishing date:

Info

Title:
Inhibition of Trichoderma on Main Fungal Diseases of Apple and Its Colonization in Soil
Author(s):
ZHANG Lili; LIU Meiyuan; WANG Yongzhang; YUAN Yongbing; QU Haiyong
(College of Horticulture，Qingdao Agricultural University，Qingdao，Shandong 266109)
Keywords:
Trichoderma; Malus pumila Mill.; Physalospora piricola Nose; Valsa mali; Colletotrichum gloeosporioides; inhibition
PACS:
-
DOI:
10.11937/bfyy.20201670
Abstract:
Soil was got from the old orchard，then diluted gradually and flat-coated on Rose Bengal medium.Trichoderma was isolated at last.The isolated Trichoderma was identified by morphological and molecular methods.The medium with different pH was prepared，and the main diseases of apple were confronted with Trichoderma spp，and the inhibitory effect on the fungal diseases was observed under different pH conditions.At present，soil organic matter and pH were the main problems in Jiaodong orchard.Orthogonal design was used to study the effects of different soil conditions (pH and organic matter content) on the growth of Trichoderma.The results showed that under different pH conditions，the effect of Trichoderma inhibiting apple pathogenic fungi was different.Trichoderma could inhibit Valsa mali and Colletotrichum gloeosporioides under different pH conditions，but for Physalospora piricola Nose，it only had no effect at pH 6.0，other pH had an inhibitory effect.Trichoderma grew best when the soil pH was 6.5 and the soil organic matter content was 75 g?kg-1.At the same time，it was found that Trichoderma could regulate the pH of soil.No matter in alkaline or acidic condition，the pH of soil could become neutral，in addition，Trichoderma could increase the content of soil organic matter.Especially in the case of high soil organic matter content，the increase was more significant.Trichoderma isolates had good inhibition effects on Valsa mali，Colletotrichum gloeosporioides and Physalospora piricola Nose.The pH of soil and organic matter content had effects on the growth of Trichoderma spp.High soil organic matter content and neutral soil were beneficial to the colonization of Trichoderma spp.In addition，Trichoderma spp.can effectively increase soil organic matter content and improve soil pH.

References:

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Last Update: 2021-06-09