Inheritance of lethal gene ‘luteus-Pa’ from cacao progenies obtained by self and cross-fertilization
With the aim to study the inheritance of lethal gene ‘luteus-Pa’ in three derivated progenies from self and cross-fertilization of cacao (Theobroma cacao L) varieties, a study was carried out during January to September 2013. As genetic material C-25, S-5 y Pa-150 varieties were utilized and this on...
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Published in | Revista Facultad Nacional de Agronomía, Medellín Vol. 70; no. 2; pp. 8123 - 8128 |
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Main Authors | , , |
Format | Journal Article |
Language | English Portuguese |
Published |
Bogota
Universidad Nacional de Colombia
01.05.2017
Facultad de Ciencias Agrarias - Universidad Nacional de Colombia Universidad Nacional de Colombia, Sede Medellín |
Subjects | |
Online Access | Get full text |
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Summary: | With the aim to study the inheritance of lethal gene ‘luteus-Pa’ in three derivated progenies from self and cross-fertilization of cacao (Theobroma cacao L) varieties, a study was carried out during January to September 2013. As genetic material C-25, S-5 y Pa-150 varieties were utilized and this one were self and cross pollinated and their progenies were divided in two replicates with 100 seeds each and sowed in plastic recipients containing a substrate 2:1(soil: sand). In order to contrast theobserved segregation with its expected homologous 3:1 (monogenic inheritance), the Chi-square (X2) test was utilized. The results shown that only one from self-fertilized progeny of C-25 variety exhibited the mendelian segregation 3:1 in both replicates, so that it lead to infer this one is carrier of lethal gene ‘luteus-Pa’ in heterozygote condition whereas that the progeny from Pa-150 x C-25 cross no found none lethal seedling and submitted to Chi-square (X2) test it could be to infer this one no segregate in the proportion 3:1 therefore, the Pa-150 variety is no carrier of this lethal gene. A better comprehension on photobiological origin, supported by molecular markers and the functional genomics of this mutant can help to identify and understand the factors involve in the photosynthetic mechanisms. |
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ISSN: | 0304-2847 2248-7026 2248-7026 |
DOI: | 10.15446/rfna.v70n2.64502 |