|Table of Contents|

Preliminary Evaluation of Cucurbita pepo Germplasm Resources and Identification of Powdery Mildew Resistance

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2024年13
Page:
17-25
Research Field:
Publishing date:

Info

Title:
Preliminary Evaluation of Cucurbita pepo Germplasm Resources and Identification of Powdery Mildew Resistance
Author(s):
WEN Ruiqi; WANG Xiang; FU Yuhang; YANG Tian; CHENG Yong′an; MA Jianxiang
(College of Horticulture，Northwest A&F University，Yangling，Shaanxi 712100)
Keywords:
Cucurbita pepo ; agronomic traits; powdery mildew; disease index; genetic diversity
PACS:
S 642.1
DOI:
10.11937/bfyy.20240507
Abstract:
Forty-seven Cucurbita pepo germplasms were used as experimental materials，and the effects of powdery mildew on Cucurbita pepo germplasms were studied by using morphological investigation and seedling identification methods.The genetic diversity of the germplasms was preliminarily evaluated，in order to provide reference for the breeding of new resistant Cucurbita pepo varieties.The results showed that the diversity index of 27 qualities varied from 0.18 to 1.82，with an average value of 0.80，indicating rich genetic diversity.The diversity index of 15 quantitative traits varied from 1.04 to 1.32，with an average of 1.20.The diversity index of quantitative traits was higher than that of quality traits.Based on the disease index and membership function values，34 highly resistant germplasm，12 moderately resistant germplasm，and 1 susceptible germplasm were selected for evaluation.

References:

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Last Update: 2024-07-16