Evaluation of diversity and resistance of maize varieties to Fusarium spp. causing ear rot in maize under conditions of natural infection

被引：6

作者：

Li, Yong Gang ^{[1
,2
]}

Jiang, Dan ^{[1
]}

Xu, Lan Kun ^{[1
]}

Zhang, Si Qi ^{[1
]}

Ji, Ping Sheng ^{[2
]}

Pan, Hong Yu ^{[3
]}

Jiang, Bai Wen ^{[4
]}

Shen, Zhong Bao ^{[5
]}

机构：

[1] Northeast Agr Univ, Agr Coll, Key Lab Cold Crop Breeding Improvement & Physiol, Harbin, Heilongjiang, Peoples R China

[2] Univ Georgia, Dept Plant Pathol, Tifton, GA 31793 USA

[3] Jilin Univ, Coll Plant Sci, Changchun, Jilin, Peoples R China

[4] Northeast Agr Univ, Resources & Environm Coll, Harbin, Heilongjiang, Peoples R China

[5] Heilongjiang Acad Agr Sci, Grass & Sci Inst, Harbin, Heilongjiang, Peoples R China

来源：

CZECH JOURNAL OF GENETICS AND PLANT BREEDING | 2019年 / 55卷 / 04期

基金：

黑龙江省自然科学基金;

关键词：

disease resistance; Fusarium ear rot; genetic diversity; Zea mays; HYBRIDS; SILK; SSR;

D O I：

10.17221/81/2018-CJGPB

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Fusarium ear rot in maize (Zea mays L.) is a serious disease in all maize-growing areas worldwide. A total of 454 fungal strains were isolated from 69 commercial maize hybrids grown in Harbin, China, and comprised Fusarium subglutinans (34.8%), F proliferatum (31.3%), F verticillioides (20%), F. graminearum (9.7%), and F. equiseti (4.2%). Among them, a complex of multiple species, F. subglutinans, F proliferatum, and F. verticillioides are the dominant fungi causing ear rot. Among 59 commercial maize hybrids, eleven hybrids (18.6%) were found to be highly resistant to Fusarium ear rot. Simple sequence repeat (SSR) analysis using six pairs of primers resulted in 24 reproducible bands and cluster analysis separated the maize hybrids into eight groups. There was little genetic variation associated with disease resistance. No correlation was found between genetic diversity and disease resistance.

引用

页码：131 / 137

页数：7

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