Genetic parameters of resistance to Meloidogyne incognita in melon

Author:

Candido Willame dos Santos1,Castoldi Renata2,Santos Lucas da Silva1,Tobar-Tosse Dora Enith1,Soares Pedro Luiz Martins1,Braz Leila Trevisan1

Affiliation:

1. Universidade Estadual Paulista “Júlio de Mesquita Filho”, Brazil

2. Universidade Federal de Uberlândia, Brazil

Abstract

ABSTRACT: In order to assess the genetic control of resistance in the melon ‘Gaúcho Redondo’ to the root-knot nematode Meloidogyne incognita, an experiment was conducted in a randomized complete block design with three blocks and six treatments using the parental lines ‘Gaúcho Redondo’ (P1 resistant) and JAB 20 (P2 susceptible), as well as F1, F2, and backcross generations (RC1P1 and RC1P2). Seventy days after inoculation, individual plants were evaluated for resistance using the nematode reproduction factor (RF). The hypothesis of monogenic inheritance was rejected by the chi-square test (χ2), and results indicated that resistance is controlled by more than one gene locus, as confirmed by the quantitative analysis that revealed the presence of six genes.

Publisher

FapUNIFESP (SciELO)

Subject

General Veterinary,Agronomy and Crop Science,Animal Science and Zoology

Reference20 articles.

1. Anuário da agricultura brasileira.,2015

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4. Inheritance of resistance of ‘Salinas 88’ lettuce to the root-knot nematode Meloidogyne incognita (Kofoid & White).;CARVALHO FILHO J.L.S.;Revista Brasileira Agrociência,,2008

5. GENES - A software package for analysis in experimental statistics and quantitative genetics.;CRUZ C.D.;Acta Scientiarum Agronomy,2013

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