Indirect selection for resistance to ear rot and leaf diseases in maize lines using biplots

被引：4

作者：

Pereira, G. S. ^{[1
]}

Camargos, R. B. ^{[2
]}

Balestre, M. ^{[3
]}

Von Pinho, R. G. ^{[2
]}

Melo, W. M. C. ^{[4
]}

机构：

[1] Univ Fed Lavras, Dept Biol, Lavras, MG, Brazil

[2] Univ Fed Lavras, Dept Agr, Lavras, MG, Brazil

[3] Univ Fed Lavras, Dept Ciencias Exatas, Lavras, MG, Brazil

[4] Advanta Comercio Sementes Ltda, Florianopolis, SC, Brazil

来源：

GENETICS AND MOLECULAR RESEARCH | 2015年 / 14卷 / 03期

关键词：

Indirect selection; Grain yield; Leaf disease; Ear rot; FUMONISIN CONTAMINATION; FUSARIUM-GRAMINEARUM; DEOXYNIVALENOL; SEVERITY; SYMPTOMS; GENOTYPE; SPOT;

D O I：

10.4238/2015.September.21.18

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Leaf disease and ear rot have caused reductions in maize yield in Brazil and other producer countries. Therefore, the aims of this study were to analyze the association between husked ear yield and the severity of maize white spot, gray leaf spot, helminthosporium, and ear rot caused by Fusarium verticillioides and Diplodia maydis using biplots in a mixed- model approach. The responses of 238 lines introduced to Brazil and four controls were evaluated using an incomplete block design with three replicates in two locations: Lavras and Uberlandia, Minas Gerais, Brazil. Two experiments were conducted in each location, one with F. verticillioides and the other with D. maydis. The mixed models elucidated the relationship between yield, leaf disease, and ear disease. Significant genotype x environment and genotype x pathogen interactions were observed. In conclusion, husked ear yield is more associated with ear rot than with the leaf diseases evaluated, justifying the indirect selection for resistance to kernel rot in maize-F. verticillioides and maize-D. maydis pathosystems by yield evaluation.

引用

页码：11052 / 11062

页数：11

共 39 条

[1] Differential gene expression in kernels and silks of maize lines with contrasting levels of ear rot resistance after Fusarium verticillioides infection [J].