|Table of Contents|

Sichuan′s Eggplant Resistance to Phytophthora Blight Pathogen of Phytophthora capsici

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年14
Page:
8-17
Research Field:
Publishing date:

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Title:
Sichuan′s Eggplant Resistance to Phytophthora Blight Pathogen of Phytophthora capsici
Author(s):
XI Yadong1; 2; QIAO Xin1; 2; FANG Chao2; 3; WU Jie1; 2; HAN Shuai1; 2; ZHANG Heqing1; 2
(1.Institute of Plant Protection，Sichuan Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crops in Southwest，Ministry of Agriculture，Chengdu,Sichuan 610066；2.Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province，Chengdu,Sichuan 610066;3.Horticulture Research Institute，Sichuan Academy of Agricultural Sciences，Chengdu,Sichuan 610066)
Keywords:
eggplant; eggplant phytophthora blight; Phytophthora capsici; tissues specific for disease resistance; disease resistance
PACS:
-
DOI:
10.11937/bfyy.20194195
Abstract:
Phytophthora blight is the most destructive diseases in recently five years in Sichuan fields and storage periods,and pathogen Phytophthora capsici have the strong pathogenicity on plants and fruits of eggplant of China.Forty-eight varieties of eggplant were used to identify the resistance of phytophthora blight，but two of them were excluded owing to bad germinating.The results showed that,in practical trials，only 46 varieties used in experiments.Diseases indexes of plants showed in different varieties,the highest of it was 96.51 on variety ‘Yangchunsanyue’ and the lowest was 12.09 for variety ‘Zhusi’ eggplant.The varieties ‘Chunqiumoqie’ and ‘Zhusi’ eggplant were all gathered together in identical cluster by clustering analysis respectively for the disease indexes and disease plant rates.For the plant resistance,two of them all showed moderate resistance to Phytophthora capsici,the other two varieties susceptible,and the remaining 42 varieties high susceptible.Analysis of Kmeans charts of diseases indexes and diseased plant rates,46 varieties could classify into six kinds of occurrence and development.The disease index was more suitable for evaluate the eggplant variety resistant to Phytophthora capsici in the sides of disciplinary and representativeness.In six classified Clusters,the Cluster4 possessed the varieties ‘Chunqiumoqie’ and ‘Zhusi’ eggplant represent the resistant plant groups,in which their Kmeans chart could be used the model pattern to select the resistant varieties in the future.The fruit of eggplant trials were carried out used to verificate of resistance results in plants.The results showed that the fruits of all varieties were highly susceptible to Phytophthora capsici including the varieties ‘Chunqiumoqie’ and ‘Zhusi’ eggplant,even though，showed the moderate resistance on the plant of eggplant.The differential resistance results on different organs of one plant，that are varieties ‘Chunqiumoqie’ and ‘Zhusi’ eggplant，should be intensive studied to elucidate the mechanism in resistance of tissue specificity.

References:

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Last Update: 2020-09-15