Resistance hederabillty of Phoma andina var. Eristalliniformis in tomato
The inheritance of Phoma andina var. erystalliniformis resistanee derived from the wild species, related to tomate, Lyeopersieon hirsutum was studies at "La Selva" ICA's Experiment Station located at Rionegro (Antioquia), between may and september of 1987. The study was done by employing 6 families in which four different resistent L.hirsutum accessions and four susceptible L. eseulentum genotypes were used as parents. Each of the families included: the parents, the generations F1 and F2 and backcrosses from the F1 to each one of the parents. Thereseareh was carried out with an complete block design with tree replicates. The plants were scored individually, for some families 60 days after transplanting and for the remaning 80 days after transplantinq, by employing a scale in which 7 means killed plants and O no symtoms. Both, the original and the transformed data were subject the following analysis: mean components by using the scaling test (Mather and Jinks, 1971) and Cavalli test; variance components by employing Mather's methology (Mather y Jinks, 1971); different estimates of heritability and the minimum number of gene pairs differentiating the susceptible and resistent parents.In all the studied familles there was an additive variance with high values, a dominance variance close to zero and low environmental variance. The heritability for the resistance was high both in broad and narrow sense, The minimum number of gene pairs differentiating the resistant and susceptible parents was estimated between 3 and 4.Based on the aboye, it is possible to introduce in the cultivated tomato Phoma andina resistance, being important determine before to do so, possible deleterous pleitropiceffects or deletereous linkage groups with the resistant genes.
| Main Authors: | , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias
1988
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| Online Access: | https://revistas.unal.edu.co/index.php/agrocol/article/view/20934 |
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