Heterosis in papaya hybrids from partial diallel of ‘Solo’ and ‘Formosa’ parents
Sergio Lucio David Marin, Messias Gonzaga Pereira, Antonio Teixeira do Amaral Júnior, Luiz Aurélio Peres Martelleto and Carlos David Ide
The high cost of imported papaya seed in Brazil has motivated the conduction of the present study, which aimed at estimating heterosis effects and the indication of superior papaya hybrids, by means of a partial diallel scheme of eight genotypes from the groups ‘Solo’ and ‘Formosa’. Parents and hybrids were evaluated in a randomized complete block design with four replications and 80 treatments (64 hybrids and 16 parents). Nine traits were evaluated and heterobeltiosis was verified for all traits. It was concluded that the diallel is a suitable strategy for the generation of papaya hybrids that meet national and international market standards. Superior hybrids with a view to further evaluation and cultivar release are those formed by the parents ‘JS11’ and ‘JS 12’ with the parents: ‘Sunrise Solo-TJ’, ‘Sunrise Solo-72/12-IS’, ‘Santa Bárbara’, ‘Baixinho de Santa Amália’, ‘São Mateus’ and ‘Sunrise Solo-783’.