Testers for combining ability and selection of papaya hybrids resistant to fungal diseases

被引：17

作者：

Vivas, Marcelo ^{[1
]}

da Silveirea, Silvaldo Felipe ^{[1
]}

Pessanha da Silva Terra, Carlos Eduardo ^{[1
]}

Pereira, Messias Gonzaga

机构：

[1] Univ Estadual Norte Fluminense Darcy Ribeiro UENF, Lab Entomol & Fitopatol, BR-28013600 Campos Dos Goytacazes, RJ, Brazil

来源：

CROP BREEDING AND APPLIED BIOTECHNOLOGY | 2011年 / 11卷 / 01期

关键词：

Carica papaya; Asperisporium caricae; Phoma caricae-papayae; Colletotrichum gloeosporioides; specifc combining ability;

D O I：

10.1590/S1984-70332011000100005

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Genetic resistance represents a sustainable alternative to disease control in papaya crop. The purpose of this study was to evaluate the use of testers to estimate combining ability and select hybrids resistant to black spot, phoma spot and chocolate spot. The experiment was conducted in a randomized block design with two replications and 20 plants per plot. The severity of phoma spot and black spot on leaves and the lesion area of black spot and chocolate spot on fruits were evaluated in two seasons. The combining ability of the following crosses is negative for all traits: tester 'JS 12' with 'Sunrise Solo and 'Kaphoro Solo PV'; tester 'Americano' with 'Caliman M5', 'Sunrise Solo', 'Baixinho de Santa Amatalia and 'Waimanalo': and tester 'Maradol' with 'Caliman G', 'Caliman AM' and 'Sunrise Solo PT'. These results may be useful in breeding for disease resistance by hybridization.

引用

页码：36 / 42

页数：7

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