Evaluation of papaya genotypes using agronomic descriptors and estimation of genetic parameters

Autor: Marcelo de Souza Silva, Sarita Leonel, Jackson Mirellys Azevêdo Souza, Joyce Helena Modesto, Rafael Bibiano Ferreira, Ana Carolina Batista Bolfarine
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Bioscience Journal, Vol 34, Iss 4 (2018)
Druh dokumentu: article
ISSN: 1981-3163
DOI: 10.14393/BJ-v34n1a2018-37164
Popis: In Brazil, the improvement of papaya agribusiness is correlated to the estimation of genetic parameters and evaluation of agronomic descriptors; thus enabling less favourable areas for the development and implementation of papaya crops. Therefore, the current study aimed to evaluate quantitative descriptors and to estimate genetic parameters in genotypes of papaya grown under subtropical climate in the state of São Paulo. The experimental design was randomized in block. The experimental units were grouped into seven blocks of five plants each and three treatments, which consisted of three different varieties: Sunrise Solo, Tainung nº1 and local. The psychochemical properties were analysed for plant height; intersection height of first fruits; stem diameter; male, female and hermaphroditic flower percentage; fruit number per plant; production; yield; normal fruits percentage, carpeloid and pentandric fruits; pulp matter; pulp length; pulp diameter; pulp shape; pulp cavity; pulp thickness; peel performance; pulp performance; seeds performance; seeds number; soluble solids; pH; titratable acidity; ratio; technological index; ascorbic acid and reducing sugars. Furthermore, most agronomic descriptors showed high heritability; besides that, the varieties Sunrise Solo and Tainung nº1 performed the best results in Botucatu.
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