Adaptability and stability of papaya hybrids affected by production seasonality

Gislanne Brito Barros,Fábio Ribeiro Barros,Renato Santa-Catarina,Julio Cesar Fiorio Vettorazzi,Messias Gonzaga Pereira,Lucas Nunes da Luz

doi:10.1590/1984-70332018v18n4a54

Abstract

Abstract The present work aimed to estimate the adaptability and stability of new papaya hybrids. The experiments were carried out at the company Caliman Agricola S/A, in the municipalities of Linhares-ES and Pureza-RN, with seven hybrids from inbred parents of the groups ‘Solo’ and ‘Formosa’ and three controls (‘Golden’, ‘Calimosa’, and ‘Tainung 01’). The experiment consisted of a randomized block design with four replications and ten plants per plot. The variables mean fruit weight (MFW), number of commercial fruits (NCF), and production (PROD) were measured at 270, 360, 450, and 540 days after planting. Afterward, the adaptability and stability of the hybrids were estimated using the Lin and Binns, Eberhart and Russell, and Mixed Models. MFW was less affected by the evaluation periods and showed high behavior predictability. The hybrids UC10, UC12, UC14, UC15, and UC16 were the most adapted and predictable and can be recommended for the regions where the experiment took place.

Highlights

Papaya has been mostly cultivated between the Southern Bahia and Northern Espírito Santo, with a production of 723.582 and 361.270 ton, respectively, corresponding to 74.11% of the national production (IBGE 2016)
In a country with continental dimensions such as Brazil, the expansion of cultivation areas is only possible by the development and dissemination of new cultivars, hybrids, and/or varieties adapted to different Brazilian regions
Significant interaction was observed between genotypes for all traits evaluated, as well as for period × harvest environment, except for the genotype × environment interaction for the trait mean fruit weight (Table 1)

Summary

Introduction

Papaya has been mostly cultivated between the Southern Bahia and Northern Espírito Santo, with a production of 723.582 and 361.270 ton, respectively, corresponding to 74.11% of the national production (IBGE 2016). Martelleto et al (2011) carried out an experiment to compare fruiting in a variety of papaya in different seasons of the year, under greenhouse and field conditions, and estimated the number of carpelloid, pentandric, and normal (commercial) fruits.

Results

Conclusion