Publication:
Desarrollo de líneas de habichuelas (Phaseolus vulgaris L.) adaptadas a las condiciones ecológicas de Haití con resistencia a enfermedades e insectos
Desarrollo de líneas de habichuelas (Phaseolus vulgaris L.) adaptadas a las condiciones ecológicas de Haití con resistencia a enfermedades e insectos
Authors
Démosthène, Gasner
Embargoed Until
Advisor
Beaver, James S.
College
College of Agricultural Sciences
Department
Department of Agricultural and Biosystems Engineering
Degree Level
M.S.
Publisher
Date
2007
Abstract
La liberación de variedades de habichuela (Phaseolus vulgaris L.) con resistencia a enfermedades y plagas podría reducir pérdidas en rendimiento en Haití. Se utilizó selección asistida por marcadores moleculares y métodos convencionales de fitomejoramiento para desarrollar líneas con resistencia al Mosaico Dorado Amarillo (BGYMV), Mosaico Común Necrótico (BCMNV), oídium causado por [Erysiphe polygoni (DC ex Merat)] y gorgojos [Zabrotes subfasciatus (Boheman)]. Se utilizó fuentes de resistencia de Haití, Puerto Rico, el Centro Internacional de Agricultura Tropical, Zamorano y la Universidad de Wisconsin como progenitores. Plantas F2 de habichuela fueron evaluadas en el invernadero para resistencia a infección natural de oidium. Se evaluaron líneas F2:3 y F3:4 en el campo en Salagnac, Haití para adaptación y reacción a infección natural de las enfermedades. Se utilizó el marcador SCAR SR2 para detectar líneas F2:3 y F3:4 con el gen bgm para resistencia al BGYMV. Las mismas plantas fueron inoculadas con la cepa NL3 de BCMNV para identificar plantas con resistencia al virus. Se identificaron seis líneas de tipo “rojo moteado” que combinaron resistencia al BGYMV, BCMNV y oidium sin embargo apenas dos de estas líneas produjeron rendimientos en el campo similares al testigo ‘Salagnac 90A’. Se utilizó el marcador SCAR SR2 y SDS PAGE para identificar líneas de tipo “rojo moteado”, “blanco” y “rojo” con resistencia al BGYMV y gorgojos. Se identificaron 12 plantas F2 que fueron homocigóticos para el gen bgm para resistencia al BGYMV y Arcelina 1 que confiere resistencia a los gorgojos. Líneas F2:3 derivadas de plantas F2 heterocigóticos para BGYMV o Arcelina serán avanzadas para evaluaciones adicionales. Las líneas con resistencia múltiple serán utilizadas por los programas de mejoramiento de Haití y Puerto Rico como líneas mejoradas y progenitores.
The release of bean varieties (Phaseolus vulgaris L.) with resistance to diseases and pests could reduce yield losses in Haiti. Marker-assisted selection and conventional methods of bean improvement were used to develop lines with resistance to Bean Golden Yellow Mosaic Virus (BGYMV), Bean Common Mosaic Necrotic Virus (BCMNV), powdery mildew caused by [Erysiphe polygoni (DC ex- Merat)] and the Mexican bean weevil [Zabrotes subfasciatus (Boheman)]. Sources of resistance from Haiti, Puerto Rico, the International Center of Tropical Agriculture, Zamorano and the University of Wisconsin were used as progenitors. F2 bean plants were evaluated in the greenhouse for resistance to natural infection of powdery mildew. F2:3 and F3:4 lines were evaluated in the field in Salagnac, Haiti for adaptation and reaction to natural infection of diseases. We used the SCAR marker SR2 to detect F2:3 and F3:4 lines with the bgm gene for resistance to BGYMV. The same plants were inoculated with BCMNV NL3 strain to identify plants with resistance to the virus. We identified six red mottled lines with BGYMV, BCMNV and powdery mildew resistance. Only two of these lines, however, produced seed yields similar to ‘Salagnac 90A'. The SCAR marker SR2 and SDS PAGE were used to identify red mottled, white and red lines with resistance to the BGYMV and the Mexican bean weevil. We identified 12 F2 plants that were homozygous for the bgm gene for BGYMV resistance and Arcelin 1 that confers resistance to the weevils. F2:3 lines derived from F2 plants heterozygous for BGYMV or Arcelin will be advanced for additional evaluations. Lines with multiple resistance will be used by the bean improvement programs of Haiti and Puerto Rico as improved breeding and parental lines in crosses.
The release of bean varieties (Phaseolus vulgaris L.) with resistance to diseases and pests could reduce yield losses in Haiti. Marker-assisted selection and conventional methods of bean improvement were used to develop lines with resistance to Bean Golden Yellow Mosaic Virus (BGYMV), Bean Common Mosaic Necrotic Virus (BCMNV), powdery mildew caused by [Erysiphe polygoni (DC ex- Merat)] and the Mexican bean weevil [Zabrotes subfasciatus (Boheman)]. Sources of resistance from Haiti, Puerto Rico, the International Center of Tropical Agriculture, Zamorano and the University of Wisconsin were used as progenitors. F2 bean plants were evaluated in the greenhouse for resistance to natural infection of powdery mildew. F2:3 and F3:4 lines were evaluated in the field in Salagnac, Haiti for adaptation and reaction to natural infection of diseases. We used the SCAR marker SR2 to detect F2:3 and F3:4 lines with the bgm gene for resistance to BGYMV. The same plants were inoculated with BCMNV NL3 strain to identify plants with resistance to the virus. We identified six red mottled lines with BGYMV, BCMNV and powdery mildew resistance. Only two of these lines, however, produced seed yields similar to ‘Salagnac 90A'. The SCAR marker SR2 and SDS PAGE were used to identify red mottled, white and red lines with resistance to the BGYMV and the Mexican bean weevil. We identified 12 F2 plants that were homozygous for the bgm gene for BGYMV resistance and Arcelin 1 that confers resistance to the weevils. F2:3 lines derived from F2 plants heterozygous for BGYMV or Arcelin will be advanced for additional evaluations. Lines with multiple resistance will be used by the bean improvement programs of Haiti and Puerto Rico as improved breeding and parental lines in crosses.
Keywords
Habichuela,
Haití,
Resistencia,
Enfermedades,
Insectos
Haití,
Resistencia,
Enfermedades,
Insectos
Usage Rights
Persistent URL
Cite
Démosthène, G. (2007). Desarrollo de líneas de habichuelas (Phaseolus vulgaris L.) adaptadas a las condiciones ecológicas de Haití con resistencia a enfermedades e insectos [Thesis]. Retrieved from https://hdl.handle.net/20.500.11801/1235