Estimation of genetic parameters and prediction of genotypic values in coffee breeding by the REML/BLUP method
The aim of this paper was to apply the REML/BLUP methodology in coffee breeding programmes, using it for parameter estimation and genotypic values prediction in a cultivar trial of Coffea arabica. A trial established in Selviria-MS by UNESP/Campus de Ilha Solteira, Mato Grosso do Sul, Brazil was studied. The trial evaluated 12 cultivars developed by the Instituto Agronomico de Campinas, Sao Paulo, Brazil in a complete block design with four replications and 10 plants per plot. The results showed a low genetic variability among cultivars for plant height, stem diameter and number of primary branches, at the age of 26 months. Only the cultivars Catuai Amarelo, Icatu Vermelho and Catuai Vermelho showed predicted genotypic values for stem diameter superior to the general mean of the trait. The accuracy of the genotypic evaluation of the cultivars for stem diameter was, in average, 76 percent. The use of an experimental design with two plants per plot and 20 replications can lead to an accuracy of 90 percent for stem diameter. The mixed model methodology (REML/BLUP) was adequate for genetic parameter estimation and genotypic values prediction in coffee breeding and could be routinely used.
| Main Authors: | , , , |
|---|---|
| Format: | biblioteca |
| Published: |
2001
|
| Subjects: | COFFEA, COFFEA ARABICA, METODOS ESTADISTICOS, FITOMEJORAMIENTO, CAFE, CALIDAD, GENOTIPOS, MODELOS LINEALES, SAO PAULO, BRASIL, |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|