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The response of a radiation-induced dwarf bean mutant to gibberellic acid

To test the growth response to gibberellic acid (GA) a dwarf mutant induced in bean by gamma irradiation was used. This dwarf mutant is controlled by a simple recessive gene and is characterized by very long shoots and smaller, darker colored leaves than the corresponding parts in normal plants. Wee...

Full description

Main Authors: Moh, C.C., Alan, J.J.
Format: Artículo
Language:Inglés
Published: Instituto Interamericano de Ciencias Agrícolas (IICA) 2025
Subjects:
Radiación solar||solar radiation||radiação solar||radiation solaire
Ácido giberelico||gibberellic acid||ácido giberélico||acide gibbérellique
Mutante||mutants||mutante||mutant
Frijol común
Fenotipo||phenotypes||fenótipo||phénotype
Sede Central
Online Access:https://repositorio.catie.ac.cr/handle/11554/13516
Summary:To test the growth response to gibberellic acid (GA) a dwarf mutant induced in bean by gamma irradiation was used. This dwarf mutant is controlled by a simple recessive gene and is characterized by very long shoots and smaller, darker colored leaves than the corresponding parts in normal plants. Weekly applications of aqueous solutions of GA from 1 to 32 ppm were able to convert the dwarf mutant to a normal phenotype. It appears that this dwarf is a GA-deficient mutant. The action of this dwarfing gene is thought to be to completely or partially obstruct the biosynthesis of PA, the production of a GA-like substance necessary for normal growth.

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