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Genetic divergence among Brachiara humidicola (Rendle) Schweick hybrids evaluated in the Western Brazilian Amazon

Authors :
Giselle Mariano Lessa de Assis
Cléia Florentino dos Santos
Patrícia Silva Flores
Cacilda Borges do Valle
Source :
Crop Breeding and Applied Biotechnology, Vol 11, Iss 14, Pp 224-231 (2014)
Publication Year :
2014
Publisher :
Brazilian Society of Plant Breeding, 2014.

Abstract

The objectives of this study were to detect genetic variability among genotypes of Brachiara humidicola, study the genetic diversity and identify redundant variables in the discrimination of hybrids. Fifteen genotypes were evaluated for morphological, agronomic and nutritive characteristics in a randomized block design with six replications, in Rio Branco, Acre. Analysis of variance was performed, followed by the Scott-Knott test. Different techniques of multivariate analysis were used to study genetic diversity. Significant differences in plant performance were observed for agronomic and morphological characteristics, but not for nutritive value. There was consistency between the different clustering techniques. Four redundant characteristics were identified that can be discarded. The existence of divergent and superior hybrids that can be used in recurrent selection (sexual) programs or can be released as new (apomictic) cultivars after testing for animal response was confirmed. The lack of genetic variability in bromatological traits indicates the need for differentiated selection strategies.

Details

Language :
English
ISSN :
15187853 and 19847033
Volume :
11
Issue :
14
Database :
Directory of Open Access Journals
Journal :
Crop Breeding and Applied Biotechnology
Publication Type :
Academic Journal
Accession number :
edsdoj.9e78d8f150244d95a0cbd61c07ffcb01
Document Type :
article