Combining ability of recombinant lines of papaya from backcrossing for sexual conversion

Barros, Gislanne Brito; Arêdes, Fernanda Abreu Santana; Ramos, Helaine Christine Cancela; Santa-Catarina, Renato; Pereira, Messias Gonzaga

doi:10.5935/1806-6690.20170019

Cited by 12 publications

(8 citation statements)

References 10 publications

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“…In this study, the CVe values for NMF, NDF and YLD were considered high, agreeing with Ramos et al (2014), Luz et al (2015), Barros et al (2017), and Luz et al (2018). High CVe values indicate low experimental precision.…”

Section: Estimates Of Genetic Parameterssupporting

confidence: 91%

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Combining ability of recombined F4 papaya lines: a strategy to select hybrid combination

Vettorazzi

Santa-Catarina

Poltronieri

et al. 2021

Sci. agric. (Piracicaba, Braz.)

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The growing demand for quality of papaya by the domestic and international markets requires the development of genotypes that are capable of incorporating traits, such as high yield and fruit quality. This study estimated the genetic parameters and the specific combining ability of F 4 papaya lines crossed to the SS-72/12 tester to identify genotypes with higher genetic value for hybrid production. We evaluated 169 treatments consisting of 62 topcross hybrid combinations, 97 F 5 lines, and 10 controls in a 13 × 13 lattice design with five replicates and two plants per plot. The following traits were evaluated: plant height (PH), stem diameter (SD), first-fruit insertion height (FFIH), number of marketable fruits (NMF), number of deformed fruits (NDF), number of fruitless nodes (NFN), average fruit weight (FW), and yield (YLD). Differences p < 0.05 were found in most traits evaluated. The specific combining ability estimates indicate that hybrids formed by the cross between SS-72/12 tester and the following lines are promising, considering the multiple traits: UCLA08

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Section: Estimates Of Genetic Parameterssupporting

confidence: 91%

“…Throughout the progress of UENF papaya breeding program, studies were undertaken on GCA and SCA to select new hybrids. Some of these studies examined traits related to fruit yield and quality (Ide et al, 2009;Cardoso et al, 2014;Barros et al, 2017), fruit deformity (Cardoso et al, 2017), and disease resistance (Vivas et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Combining ability of recombined F4 papaya lines: a strategy to select hybrid combination

Vettorazzi

Santa-Catarina

Poltronieri

et al. 2021

Sci. agric. (Piracicaba, Braz.)

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“…The experiment comprised 14 lines selected from populations (first and third generations) derived from the backcrossing between the dioiceus genotype 'Cariflora' and the elite variety 'Sunrise Solo 783' (SS 783) (Silva et al, 2007a,b;Ramos et al, 2012;Barros et al, 2017). The hybrids obtained from the crossing between the 14 lines and four SS-72/12 testers (parents of commercial hybrids) belonging to the 'Solo' group, as well as those obtained from the crossing between the 14 lines and JS-12, SEKATI and 41/7 testers belonging to the 'Formosa' group, were also used in the experiment.…”

Section: Methodsmentioning

confidence: 99%

Selecting black-spot resistant papaya genotypes derived from backcrossing and hybrids

et al. 2017

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“…The single seed descent method was used to obtain recombinant inbred lines from the Formosa group (Cortes et al 2018). The pedigree method was used for the advanced and conduction of segregating populations derived from backcrossing in order to select recombinant inbred lines to obtain hybrids (Ramos et al 2014a; Barros et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Development of superior lines of papaya from the Formosa group using the pedigree method and REML/Blup procedure

et al. 2019

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Developing superior lines based on a simultaneous response from many traits of agronomic importance is a fundamental strategy to expand papaya cultivar supply, mainly the much-needed cultivars belonging to group Formosa. Our goal was to associate the pedigree method with REML/Blup procedure to select plants of progenies F 2:3 with superior agronomic performance. The variance components and genetic parameters were estimated using REML approach, and the genetic values were predicted using Blup methodology. The combined selection was performed using the IG2 selection index based on weights associated with agronomic values to indicate the best progenies and lines. The heritability estimates of progeny mean were high in most traits and evidenced significant genetic variability between progenies. The narrow-sense individual heritability was moderate in traits such as commercial fruits and soluble solid contents, which indicates a PLANT BREEDING -Article favorable condition for selections within progenies. The index was consistent in the selection of six superior progenies according to the assessed traits. This index also enabled promising genetic gains in traits of great interest such as yield and pulp thickness.Although the progenies are derived from self generations, they proved to be superior in traits of significant importance such as yield, commercial fruits, and pulp thickness when compared to the Tainung-01 hybrid, which is a worldwide-planted cultivar used as a reference to Formosa representatives. Six lines were selected within the superior progenies to continue the Formosa group-lines development program. The association of the pedigree method with REML/Blup procedure can be useful to assist breeders in an autogamous breeding program.

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Combining ability of recombinant lines of papaya from backcrossing for sexual conversion

Cited by 12 publications

References 10 publications

Combining ability of recombined F4 papaya lines: a strategy to select hybrid combination

Combining ability of recombined F4 papaya lines: a strategy to select hybrid combination

Selecting black-spot resistant papaya genotypes derived from backcrossing and hybrids

Development of superior lines of papaya from the Formosa group using the pedigree method and REML/Blup procedure

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