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Katungi, EnidLetaa, EmmanuelKabungo, CatherineNdunguru, Agness[Access and utilization of improved common bean technologies in Southern Tanzania]Access and utilization of improved common bean technologies in Southern Tanzania

Yields of large-seeded Andean (A) common bean (Phaseolus vulgaris L.) cultivars of Chile and Nueva Granada races are 40 to 60% lower compared to their Middle American (M) counterparts of small-seeded Mesoamerica and medium-seeded Durango races. Our objective was to use the concept of congruity ba...


Singh, Shree P.Terán Santofimio, HenryMuñoz Perea, Carlos GermánOsorno Gonzalez, JM[Selection for seed yield in Andean intra-gene pool and Andean x middle American inter-gene pool populations of common bean]Selection for seed yield in Andean intra-gene pool and Andean x middle American inter-gene pool populations of common bean
Moquete Cuevas, CAGuimaraes, Elcio Perpétuo[Relationship among Latin American rice breeding sites for disease evaluation]Relationship among Latin American rice breeding sites for disease evaluation
Doreste S., ErnestoArias, CarlosBellotti, Anthony C.[Pruebas de variedades de yuca resistentes a ácaros tetraníquidos]Pruebas de variedades de yuca resistentes a ácaros tetraníquidos

Fifty-four accessions of Phaseolus vulgaris cultivated in Spain and representing a broad variability for this country, were studied together with 30 samples of wild forms of American origin. Two reference cultivars (from the Andes and Mesoamerica) plus two outgroups (P. coccineus and Vigna unguic...


Ocampo Nahar, César H.Martin, JPSánchez Yélamo, María DoloresOrtiz, J.M.Toro Chica, Orlando[Tracing the origin of Spanish common bean cultivars using biochemical and molecular markers]Tracing the origin of Spanish common bean cultivars using biochemical and molecular markers

We determined DNA fingerprints and pathotypes on international differentials for 151 isolates of the rice blast fungus Pyricularia grisea that were collected from 15 rice cultivars at a blast disease breeding nursery in Santa Rosa, Colombia. The pathogen population expressed an extraordinarily hi...


Levy, MCorrea Victoria, Fernando J.Zeigler, Robert S.Xu, SHamer, JE[Genetic diversity of the rice blast fungus in a disease nursery in Colombia]Genetic diversity of the rice blast fungus in a disease nursery in Colombia

More than 60% of common bean production worldwide is derived from cultivars of Middle American origin. Understanding the diversity of these will facilitate their use in genetic improvement. The objective of this study was to analyze a collection of 269 landraces of common bean (Phaseolus vulgaris...


Beebe, Stephen E.Skroch, PWTohme, Joseph M.Duque E., Myriam CristinaPedraza García, FabioNienhuis, James[Structure of genetic diversity among common bean landraces of middle American origin based on correspondence analysis of RAPD]Structure of genetic diversity among common bean landraces of middle American origin based on correspondence analysis of RAPD

Common bean (Phaseolus vulgaris) germ plasm accession G 2333 (Colorado de Teopisca) from Mexico was resistant to 380 isolates of the anthracnose pathogen (Colletotrichum lindemuthianum) from 11 Latin American countries. Six frequently used sources of resistance were susceptiblc to many isolates. ...


Pastor Corrales, Marcial A.Erazo, OAEstrada Salazar, EI[Inheritance of anthracnose resistance in common bean accession G 2333]Inheritance of anthracnose resistance in common bean accession G 2333

Apomixis—asexual reproduction through seed—provides a convenient means to faithfully propagate even heterozygous genotypes and hence exploit heterosis, in several naturally apomictic, warm-season forage grasses. Inheritance of apomixis has been shown to be monogenic dominant in at least four econ...


Miles, John W.[Apomixis for cultivar development in tropical forage grasses]Apomixis for cultivar development in tropical forage grasses

New bean varieties translate into increased on-farm yields only if farmers obtain access to desired seed. Conventional models of legume seed delivery in Africa, centralized with the National Agricultural Research Systems (NARS), prove to be slow and of limited reach. This article describes a nove...


Rubyogo, Jean-ClaudeSperling, L.Muthoni Andriatsitohaina, RachelBuruchara, Robin A.[Bean seed delivery for small farmers in sub-Saharan Africa: the power of partnerships]Bean seed delivery for small farmers in sub-Saharan Africa: the power of partnerships

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