Publication:
Breeding for ashy stem blight resistance in common bean (𝘗𝘩𝘢𝘴𝘦𝘰𝘭𝘶𝘴 𝘷𝘶𝘭𝘨𝘢𝘳𝘪𝘴 L.) and assessment of hybrids and pigeonpea [𝘊𝘢𝘫𝘢𝘯𝘶𝘴 𝘤𝘢𝘫𝘢𝘯 (L.) Mill.] breeding lines
Breeding for ashy stem blight resistance in common bean (𝘗𝘩𝘢𝘴𝘦𝘰𝘭𝘶𝘴 𝘷𝘶𝘭𝘨𝘢𝘳𝘪𝘴 L.) and assessment of hybrids and pigeonpea [𝘊𝘢𝘫𝘢𝘯𝘶𝘴 𝘤𝘢𝘫𝘢𝘯 (L.) Mill.] breeding lines
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Authors
Vázquez Rivera, Roberto III
Embargoed Until
Advisor
Viteri Dillon, Diego M.
College
College of Agricultural Sciences
Department
Agricultural Experimental Station
Degree Level
M.S.
Publisher
Date
2024-12-17
Abstract
La habichuela (Phaseolus vulgaris L.) y el gandul [Cajanus cajan (L.) Mill] son leguminosas de
importancia económica en Puerto Rico. Los objetivos de esta investigación fueron: (1) evaluar la
respuesta de germoplasma de habichuela recientemente desarrollado al hongo Macrophomina
phaseolina (Tassi) Goidanich, y (2) comparar el comportamiento agronómico de híbridos versus
genotipos de gandul. Los genotipos de semilla blanca UPR-Mp-37 y UPR-Mp-48 tuvieron una
respuesta intermedia en el invernadero y el campo a las cepas PRI21, PRI22, y PRI23M de M.
phaseolina en ensayos en Isabela y Lajas. Los dos genotipos tuvieron una ganancia genética de
resistencia a M. phaseolina de > 25% comparado a ‘Beníquez’ y ‘Verano’que fueron susceptibles
a todas las cepas del hongo. Para el gandul, los híbridos 13KLAF1 y LA13KF1 y la línea mejorada
UPE-4 superaron los rendimientos de ‘Lázaro’ por más del 102% en Isabela (2,890-3,112 kg ha-1)
y Lajas (1,143-1,725 kg ha-1).
Common bean (Phaseolus vulgaris L.) and pigeonpea [Cajanus cajan (L.) Mill] are important legumes planted in Puerto Rico. The objectives of this research were to: (1) evaluate the response of recently developed common germplasm to the fungus Macrophomina phaseolina (Tassi) Goidanich, and (2) compare the agronomic performance of hybrids versus pigeonpea genotypes. UPR-Mp-37 and UPR-Mp-48 white common bean genotypes had an intermediate response to PRI21, PRI22, and PRI23M M. phaseolina isolates in the greenhouse and field trials in Isabela and Lajas. Both genotypes had a genetic gain for resistance to M. phaseolina > 25% compared to ‘Beníquez’ and ‘Verano’ which were susceptible in all evaluations. In pigeonpea, 13KLAF1, LA13KF1 hybrids, and UPE-4 breeding line had > 102% gain for seed yield than ‘Lazaro’ in Isabela (2,890-3,112 kg ha-1) and Lajas (1,143-1,725 kg ha-1).
Common bean (Phaseolus vulgaris L.) and pigeonpea [Cajanus cajan (L.) Mill] are important legumes planted in Puerto Rico. The objectives of this research were to: (1) evaluate the response of recently developed common germplasm to the fungus Macrophomina phaseolina (Tassi) Goidanich, and (2) compare the agronomic performance of hybrids versus pigeonpea genotypes. UPR-Mp-37 and UPR-Mp-48 white common bean genotypes had an intermediate response to PRI21, PRI22, and PRI23M M. phaseolina isolates in the greenhouse and field trials in Isabela and Lajas. Both genotypes had a genetic gain for resistance to M. phaseolina > 25% compared to ‘Beníquez’ and ‘Verano’ which were susceptible in all evaluations. In pigeonpea, 13KLAF1, LA13KF1 hybrids, and UPE-4 breeding line had > 102% gain for seed yield than ‘Lazaro’ in Isabela (2,890-3,112 kg ha-1) and Lajas (1,143-1,725 kg ha-1).
Keywords
Breeding,
Cajanus cajan,
Hybrid vigor,
Macrophomina phaseolina,
Phaseolus vulgaris
Cajanus cajan,
Hybrid vigor,
Macrophomina phaseolina,
Phaseolus vulgaris
Usage Rights
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Persistent URL
Cite
Vázquez Rivera, R. I. (2024). Breeding for ashy stem blight resistance in common bean (𝘗𝘩𝘢𝘴𝘦𝘰𝘭𝘶𝘴 𝘷𝘶𝘭𝘨𝘢𝘳𝘪𝘴 L.) and assessment of hybrids and pigeonpea [𝘊𝘢𝘫𝘢𝘯𝘶𝘴 𝘤𝘢𝘫𝘢𝘯 (L.) Mill.] breeding lines [Thesis]. Retrieved from https://hdl.handle.net/20.500.11801/3971