Over 150 bean (Phaseolus vulgaris) pure lines and accessions were evaluated in growth chamber and greenhouse trials for reactions to one or more populations of root-knot nematodes (Meloidogyne spp.) collected from Colombia or the United States. Bean pure lines and accessions were evaluated for ro...
Mullin, BA
,
Abawi, G.S.
,
Pastor Corrales, Marcial A.
,
Kornegay, Julia L.
,
[Reactions of selected bean pure lines and accessions to Meloidogyne species]
,
Reactions of selected bean pure lines and accessions to Meloidogyne species
In 1993, seed from the EMP series reportedly resistant to leafhoppers (Empoasca Kraemeri Ross & Moore), was obtained from Centro Internacional de Agricultura Tropical (CIAT), South America and planted at Ridgetown, ON. Under severe potato leafhopper, Empoasca fabae (Hams), pressure the selections...
Schaafsma, AW
,
Cardona Mejía, César
,
Kornegay, Julia L.
,
Wylde, AM
,
Michaels, TE
,
[Resistance of common bean lines to the potato leafhopper (Homoptera: Cicadellidae)]
,
Resistance of common bean lines to the potato leafhopper (Homoptera: Cicadellidae)
A survey of root-knot nematodes associated with bean (Phaseolus vulgaris) roots and soils in the major bean production regions of Colombia and Peru was conducted during 1988 1989. Over 150 samples were processed for these parasites, and specimens from more than 100 of the collections were identif...
Mullin, BA
,
Abawi, G.S.
,
Pastor Corrales, Marcial A.
,
Kornegay, Julia L.
,
[Root-knot nematodes associated with beans in Colombia and Peru and related yield loss]
,
Root-knot nematodes associated with beans in Colombia and Peru and related yield loss
Ospina, MT
,
Otoya, María Mercedes
,
Kornegay, Julia L.
,
Pastor Corrales, Marcial A.
,
[Resistencia a las razas 2 y 3 de añublo de halo, Pseudomonas syringae pv. phaseolicola, en algunas líneas mejoradas de frijol comun, Phaseolus vulgaris L.]
,
Resistencia a las razas 2 y 3 de añublo de halo, Pseudomonas syringae pv. phaseolicola, en algunas líneas mejoradas de frijol comun, Phaseolus vulgaris L.
Lareo, LR
,
Cardona Mejía, César
,
Posso G, CE
,
Kornegay, Julia L.
,
[Nutritional and toxicological studies with arcelin-containing bean genotypes]
,
Nutritional and toxicological studies with arcelin-containing bean genotypes
La investigación se realizó en el CIAT, en la Granja de CIAT en Darién y fincas de agricultores del mismo municipio departamento del Valle, entre 1989 y 1991. El análisis de varianza para rendimiento de grano en las generaciones 2 y F6, mostró amplia interacción genotipo x ambiente. En general hu...
Beltrán Giraldo, Jorge Alonso
,
Baena Garcia, D
,
Kornegay, Julia L.
,
[Evaluación de generaciones segregantes de fríjol Phaseolus vulgaris L. en campos de agricultores en contraste a la realizada en estación experimental]
,
Evaluación de generaciones segregantes de fríjol Phaseolus vulgaris L. en campos de agricultores en contraste a la realizada en estación experimental
Photoperiod response of flowering in common bean (Phaseolus vulgaris L.) is thought to be controlled by the genes Ppd and Hr. However, cultivars also vary in the degree that cooler temperatures reduces their sensitivity to photoperiod. To examine the inheritance of this temperature sensitivity, c...
White, Jeffrey W.
,
Kornegay, Julia L.
,
Cajiao V., César Hernando
,
[Inheritance of temperature sensitivity of the photoperiod response in common bean (Phaseolus vulgaris L.)]
,
Inheritance of temperature sensitivity of the photoperiod response in common bean (Phaseolus vulgaris L.)
To satisfy farmer and consumer preferences, breeding efforts to increase yield potential in common bean must take into account the interrelated effects of growth habit, seed size, maturity, and gene pool on yield expression in segregating populations. To examine the relationships among these trai...
Kornegay, Julia L.
,
White, Jeffrey W.
,
Ortiz de la Cruz, O.
,
[Growth habit and gene pool effects on inheritance of yield in common bean]
,
Growth habit and gene pool effects on inheritance of yield in common bean
Common bean germ plasm (Phaseolus vulgaris) with intermediate Ascochyta blight (caused by Phoma exigua var. diversispora) resistance has been identified at CIAT. The heritability and inheritance of resistance to this pathogen were studied in three resistant climbing bean sources. Narrow-sense her...
Hanson, PM
,
Pastor Corrales, Marcial A.
,
Kornegay, Julia L.
,
[Heritability and sources of Ascochyta blight resistance in common bean]
,
Heritability and sources of Ascochyta blight resistance in common bean