Data/hora: 09/06/2024 15:44:13

Provedor de dados: | 75
País: | Brazil
Título: | Genetic divergence among eggplant genotypes under high temperatures
Autores: | Valadares,Ricardo de N; Nóbrega,Danieli A; Lima,Lilian B de; Mendes,Adônis Q; Silva,Fabian S; Melo,Roberto de A; Menezes,Dimas.
Data: | 2019-07-01
Ano: | 2019
Palavras-chave: | Solanum melongena; Genetic variability; Protected cultivation.
Resumo: | ABSTRACT The aim of this study was to estimate the genetic divergence among eggplant genotypes for agronomic traits in order to gather information for the selection of genotypes in eggplant breeding programs for tolerance to high temperatures. Ten traits recommended by the International Board for Plant Genetic Resources were analyzed in 24 genotypes, arranged in a randomized complete block design with four replicates. Data were submitted to analysis of variance (P&lt;0.01) and later to the UPGMA and Tocher grouping methods, using the generalized Mahalanobis distance (D2) as dissimilarity measure. Three and six groups of similarity were obtained, respectively, for the multivariate techniques used, UPGMA and Tocher, with concordance in the grouping of 87.50% of the genotypes. The characters fruit length (34.71%), fruit width (35.96%) and fruit length/width ratio (14.08%) were the main contributors to genetic divergence, explaining 90.72% of total genetic dissimilarity. The genotypes presented considerable genetic variability for all agronomic traits analyzed and can be used in eggplant genetic breeding programs for high temperatures.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000300272
Editor: | Associação Brasileira de Horticultura
Relação: | 10.1590/s0102-053620190304
Formato: | text/html
Fonte: | Horticultura Brasileira  v.37 n.3 2019
Fonte: | info:eu-repo/semantics/openAccess