Capítulo VIII: heredabilidad del rendimiento y sus componentes en tomate, Lycopersicon esculentum, Mill.; correlaciones genéticas y ambientales
This study intended to determine heritability, in the wide sense, of tomato yield and its components and their genotypic and environmental correlations in a population composed of three inbred lines (Ponderosa Red, Chonto y Red Cherry) and the F1 from one direction crosses. Heritability was estimated from the expected mean squares and genotypic and environmental correlations were calculated from E.M.S. and cross products from the analysis of covariance. For total yield, number of fruits per plant and mean fruit weight calculated heritability were 79.3%, 93.107% and 94.25%, respectively. Genotypic correlation coefficients were: between number of fruits per plant and mean fruit weight -0.985; between number of clusters and fruits per cluster 0.541; between locules por fruit and mean weight of locule 0.826. Environmental correlations were: between number of fruits per plant and mean weight of fruits 0.512; between yield and number of fruits per plant 0.065; between yield and mean weight of fruits 0.613; between number of clusters and fruits per cluster 0.878; between number of locules per fruit and mean locule weight 0.779. The results indicate that the best method to improve yields would be a selection index considering mean weight of fruits and giving some consideration to number of fruits per plant. In order to let these characteristics to express themselves maximum soil and crop management should be provided.
| Main Authors: | , |
|---|---|
| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Palmira
1994
|
| Online Access: | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/15558 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|