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- Title
New source of alleles for resistance to black spot and phoma spot in papaya (Carica papaya L.).
- Authors
Pirovani, Adriana Azevedo Vimercati; Ramos, Helaine Christine Cancela; Santa-Catarina, Renato; Poltronieri, Tathianne Pastana de Sousa; Vettorazzi, Julio Cesar Fiorio; Santos, Pedro Henrique Araújo Diniz; Santana, Josefa Grasiela Silva; Duarte, Rafaela Pereira; Vivas, Marcelo; Pereira, Messias Gonzaga
- Abstract
The papaya (Carica papaya L.) breeding program carried out by UENF has endeavored to develop resistant genotypes. A way to obtain such materials and broaden their genetic base is by incorporating resistance alleles extracted from dioecious genotypes into breeding programs. This study aimed to examine the morpho-agronomic attributes and aspects of resistance to black spot and phoma spot in a new hermaphrodite genotype (H-M3), which was identified in a resistant dioecious progeny (PD-M3). Twenty-one traits were evaluated in six genotypes in a randomized-block design with ten replicates and two plants per plot. Analysis of variance and means test were performed. Genetic parameters and divergence analysis were performed. The H-M3 genotype was near to 'Calimosa' and Maradol in the analyzed clusters, indicating good morpho-agronomic attributes and resistance. The proximity of H-M3 to the Maradol genotype is important since Maradol has already been reported as being resistant to black spot and exhibiting lower severity and incidence of phoma spot. Therefore, H-M3 emerges as a promising material for papaya breeding, as it encompasses favorable agronomic traits and moderate resistance.
- Subjects
PHOMA; ALLELES; PAPAYA; GENOTYPES; ANALYSIS of variance
- Publication
Euphytica, 2021, Vol 217, Issue 6, p1
- ISSN
0014-2336
- Publication type
Article
- DOI
10.1007/s10681-021-02863-3