Diallel analysis of yield and quality traits of melon fruits

Abstract

The purpose of this study was to estimate the general and specific combining ability of melon hybrids to identify the best combinations. Six parents and their respective hybrids were evaluated in a complete randomized block design with three replications. The following traits were assessed: total number of fruits, average fruit weight, yield, longitudinal diameter, transversal diameter, flesh thickness, internal cavity size, flesh firmness, and soluble solids. The traits total fruit number, yield, flesh firmness and soluble solids content are controlled by additive and non-additive effects, while average fruit weight, longitudinal diameter, flesh thickness, internal cavity size are controlled by additive effects. The most appropriate crosses for breeding of Cantaloupe, Honey dew, Piel del sapo, Meloa and Amarelo melon are, respectively: Gold Mine x Hy Mark, AF-646 x AF-1749, Meloa x Rochedo and AF-646 x Rochedo.

CARACTERIZAÇÃO MORFOLÓGICA DE FONTES DE RESISTÊNCIA DE MELOEIRO A Pseudoperonospora cubensis

“…A espessura da polpa é a parte comestível, sendo desejável a maior possível. A firmeza de polpa está relacionada com a vida útil pós-colheita e relaciona-se diretamente com as propriedades mecânicas de resistência fundamentais no manuseio, transporte, armazenamento e comercialização (BARROS et al, 2011). leiro voltados para a exportação.…”

Potential of parents and hybrids experimental of the yellow melon

“…Table 1 -Summary of diallel analysis for six traits evaluated in a partial diallel involving two groups of yellow melon lines. There are controversies in relation to genetic control for soluble solids: Barros et al (2011), Kalb and Davis (1984), Shashikumar and Pitchaimuthu (2016), and Singh and Randhawa (1990) reported additive and non-additive effects, whereas Lippert and Legg (1972) detected only the additive effect as significant.…”

“…The first step in producing hybrid melon seeds is obtaining lines with high performance themselves, with a high concentration of favorable alleles. In addition to the intrinsic performance of a line, it is important to estimate its combining ability, aiming to utilize heterosis since the main traits of economic importance, such as soluble solids content and yield, are controlled by additive and non-additive (dominance) effects (BARROS et al 2011;FEYZIAN et al 2009;POUYESH et al 2017;ZALAPA et al2006). The main breeding programs use the elite lines of companies to study the combining ability of the most promising lines, generally obtained by the pedigree method.…”

“…Consequently, diallel analysis allows the breeder to identify the best hybrid combinations, both for immediate utilization in the form of F 1 hybrids and for the choice of segregating populations for obtaining lines with greater potential for generating superior hybrids. In melon, the diallel cross technique has been successfully used by various authors to choose parents and/or to study the inheritance of relevant traits (BARROS et al 2011;FEYZIAN et al 2009;KALB & DAVIS 1984;LIPPERT & LEGG 1972;MOHAMMADI et al 2014;POUYESH et al 2017).…”

Exploring Heterosis in Melon (Cucumis melo L.)

“…Several authors [25,[28][29][30][31] reported that yield per plant in melon is mostly based on the additive effect of genes. Our ratio between GCA and SCA equal to 7.8 confirmed this.…”