Heterosis and combining ability studies in French bean

By:

SINGH, A.K

Contributor(s):

SAINI, S.S

Material type: Article

ArticleLanguage: English Description: 15(1):17-22Subject(s): LOC classification:

27487

In: Sabrao JournalSummary: Se evaluaron 7 lineas de habichuela de tipo voluble y arbustivo en un cruce dialelico en cuanto a la habilidad combinatoria general, la habilidad combinatoria especifica y el porcentaje de heterosis para rendimiento, no. de vainas/planta y diametro de la vaina en condiciones de campo en Solan, India. Los cuadrados medios de habilidad combinatoria general y habilidad combinatoria especifica fueron altamente significativas. Los cuadrados medios de efectos de habilidad combinatoria general fueron mayores que los efectos de habilidad combinatoria especifica para el no. de vainas/planta y diametro de la vaina, indicando un dominio de efectos genicos aditivos; lo contrario fue cierto para el rendimiento de semilla. Se observo heterosis para rendimiento y no. de vainas/planta en la mayoria de los casos. El diametro de la vaina fue altamente significativo en todas las combinaciones. Se sugiere un mejoramiento del cultivo mediante la produccion de semilla hibrida, utilizando factores masculinos esteriles o mediante metodos convencionales de seleccion para cultivos autopolinizados utilizando cruces seleccionados. (RA-CIAT)Summary: Seven French bean lines of pole and bush types were evaluated in a diallel cross for general combining ability, specific combining ability, and percentage of heterosis for yield, no. of pods/plant, and pod diameter in the field in Solan, India. The general combining ability and specific combining ability mean squares were highly significant. Mean squares of general combining ability effects were higher than those of specific combining ability effects for no. of pods/plant and pod diameter, indicating a dominance of additive gene effects, the contrary being true for seed yield. Heterosis was observed for yield and no. of pods/plant in most cases. For pod diameter it was highly significant in all combinations. Crop improvement by hybrid seed production using male sterile factors or by conventional selection methods for self- pollinated crops using selected crosses is suggested. (AS)

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Item type	Current library	Collection	Call number	Copy number	Status	Date due	Barcode	Item holds
Journal Article	CIAT Library Document collection CINFOS	Document Collection CINFOS	27487 (Browse shelf(Opens below))	c.1	Short Loan		100062481

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Se evaluaron 7 lineas de habichuela de tipo voluble y arbustivo en un cruce dialelico en cuanto a la habilidad combinatoria general, la habilidad combinatoria especifica y el porcentaje de heterosis para rendimiento, no. de vainas/planta y diametro de la vaina en condiciones de campo en Solan, India. Los cuadrados medios de habilidad combinatoria general y habilidad combinatoria especifica fueron altamente significativas. Los cuadrados medios de efectos de habilidad combinatoria general fueron mayores que los efectos de habilidad combinatoria especifica para el no. de vainas/planta y diametro de la vaina, indicando un dominio de efectos genicos aditivos; lo contrario fue cierto para el rendimiento de semilla. Se observo heterosis para rendimiento y no. de vainas/planta en la mayoria de los casos. El diametro de la vaina fue altamente significativo en todas las combinaciones. Se sugiere un mejoramiento del cultivo mediante la produccion de semilla hibrida, utilizando factores masculinos esteriles o mediante metodos convencionales de seleccion para cultivos autopolinizados utilizando cruces seleccionados. (RA-CIAT) spa

Seven French bean lines of pole and bush types were evaluated in a diallel cross for general combining ability, specific combining ability, and percentage of heterosis for yield, no. of pods/plant, and pod diameter in the field in Solan, India. The general combining ability and specific combining ability mean squares were highly significant. Mean squares of general combining ability effects were higher than those of specific combining ability effects for no. of pods/plant and pod diameter, indicating a dominance of additive gene effects, the contrary being true for seed yield. Heterosis was observed for yield and no. of pods/plant in most cases. For pod diameter it was highly significant in all combinations. Crop improvement by hybrid seed production using male sterile factors or by conventional selection methods for self- pollinated crops using selected crosses is suggested. (AS) eng