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Common beans were introduced from the Americas to China over 400 years ago and presently constitute an important export crop in many areas of the country. Evaluation of the genetic diversity present in Chinese accessions of common beans is essential for conservation, management and utilization of...


Zhang, X.Blair, Matthew W.Wang, S.[Genetic diversity of Chinese common bean (Phaeolus vulgaris L.) landraces assessed with simple sequence repeat markers]Genetic diversity of Chinese common bean (Phaeolus vulgaris L.) landraces assessed with simple sequence repeat markers

The genetic and virulence variability of 112 isolates of Phaeoisariopsis griseola, collected from various locations in Central America, were studied using seven random amplified polymorphic DNA (RAPD) primers and 12 common-bean differential genotypes. Broad molecular diversity (H = 0·92) among is...


Mahuku, George S.Jara, Carlos E.Cuasquer, Juan B.Castellanos, G.[Genetic variability within Phaeoisariopsis griseola from Central America and its implications for resistance breeding of common bean]Genetic variability within Phaeoisariopsis griseola from Central America and its implications for resistance breeding of common bean

Breeding programs for acid-soil tolerance are desirable as a relatively inexpensive and permanent way for increasing maize (Zea mays L.) yield on these soils. Our objective was to compare the genetic effects controlling the expression of maize traits in acid and non-acid soils. Seven related and ...


Pérez Velásquez, Juan CarlosSouza Junior, C.L. deNarro Leon, LAPandey, S.León, C. de[Genetics effects for maize traits in acid and non-acid soils]Genetics effects for maize traits in acid and non-acid soils

An AFLP genetic variability study of the Colombian collection of lulo Solanum quitoense and related species of section Lasiocarpa was carried out. The aim was to elucidate the genetic polymorphism of such collection and interspecific affinities. Two primer combinations, E-ACG/M-CAT and E-ACG-M-CT...


Fory Sánchez, Paola AndreaSánchez Mosquera, I.Bohórquez Cháux, AdrianaRamírez, H.Medina Cano, CILobo Arias, M[Genetic Variability of the Colombian Collection of Lulo (Solanum quitoense Lam.) and Related Species of Section Lasiocarpa = Variabilidad Genética de la Colección Colombiana de Lulo (Solanum quitoense Lam.) y Especies Relacionadas de la Sección Lasiocarpa]Genetic Variability of the Colombian Collection of Lulo (Solanum quitoense Lam.) and Related Species of Section Lasiocarpa = Variabilidad Genética de la Colección Colombiana de Lulo (Solanum quitoense Lam.) y Especies Relacionadas de la Sección Lasiocarpa

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

It is generally accepted that two major gene pools exist in cultivatedcommon bean (Phaseolus vulgaris L.), a MiddleAmerican and an Andean one. Some evidence, based on unique phaseolin morphotypesand AFLP analysis, suggests that at least one more gene pool exists incultivated common bean. To inves...


Islam, F.M.A.Basford, KERedden, RJGonzález, A.V.Kroonenberg, PMBeebe, Stephen E.[Genetic variability in cultivated common bean beyond the two major gene pools]Genetic variability in cultivated common bean beyond the two major gene pools

Cassava (Manihot esculenta) is a major food staple for nearly 600 million people in Africa, Asia, and Latin America. Major losses in yield result from biotic and abiotic stresses that include diseases such as Cassava Mosaic Disease (CMD) and Cassava Bacterial Blight (CBB), drought, and acid soils...


Anderson, J.W.Delseny, MFregene, Martin A.Jorge, VMba, CLópez, C.E.Restrepo, S.Soto Suárez, M.Piegu, BVerdier, ValérieCooke, RGTohme, Joseph M.Horvat, DP[An EST resource for cassava and other species of Euphorbiaceae]An EST resource for cassava and other species of Euphorbiaceae

Anthracnose, caused by Colletotrichum gloeosporioides, is the most important and widespread disease of Stylosanthes, a diverse tropical and subtropical forage legume naturally distributed in central and South America. This paper compares the genetic and pathogenic diversity of 45 isolates, which ...


Kelemu, SegenetBadel, JLMoreno, CXMiles, John W.Chakraborty, S.Fernandes, C.D.Charchar, Maria José[Biodiversity, epidemiology and virulence of Colletotrichum gloeosporioides. I. Genetic and pathogenic diversity in Colletotrichum gloeosporioides isolates from Stylosanthes guianensis]Biodiversity, epidemiology and virulence of Colletotrichum gloeosporioides. I. Genetic and pathogenic diversity in Colletotrichum gloeosporioides isolates from Stylosanthes guianensis

DNA variation was studied at the intra- andinterspecific levels within the genus Passiflora, with particular emphasis on the subgenusTacsonia and its relationship with the subgenusPassiflora. AFLP fingerprints were generated for35 accessions from 21 species, 14 of which belong to subgenusTacsonia...


Segura, Sergio D.Coppens d'Eeckenbrugge, GeoBohórquez Cháux, AdrianaOllitrault, PTohme, Joseph M.[An AFLP diversity study of the genus Passiflora focusing on subgenus Tacsonia]An AFLP diversity study of the genus Passiflora focusing on subgenus Tacsonia

?1-pyrroline-5-carboxylate synthetase (P5CS) is the rate-limiting enzyme involved in the biosynthesis of proline in plants. By the 3? rapid amplification of cDNA ends (3?-RACE) approach, a 2,246-bp cDNA sequence was obtained from common bean (Phaseolus vulgaris L.), denominated PvP5CS2 differing ...


Chen, J.Zhang, X.Jing, RBlair, Matthew W.Mao, XWang, S.[Cloning and genetic diversity analysis of a new P5CS gene from common bean (Phaseolus vulgaris L.)]Cloning and genetic diversity analysis of a new P5CS gene from common bean (Phaseolus vulgaris L.)

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