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Evidence for genetic diversity in cultivated common bean (Phaseolus vulgaris) is reviewed. Multivariate statistical analysis of morphological, agronomic, and molecular data, as well as other available information on Latin American landraces representing various geographical and ecological regions...


Singh, S.P.Gepts, Paul L.Debouck, Daniel G.[Races of common bean (Phaseolus vulgaris, Fabaceae)]Races of common bean (Phaseolus vulgaris, Fabaceae)
Urrea, Carlos A.Singh, S.P.[Variation for leaflet shape in wild and cultivated landraces of common bean]Variation for leaflet shape in wild and cultivated landraces of common bean

Comparative results are given on the evaluation of bacterial blight in bean germplasm carried out in the glasshouse and in the field. (CIAT)


Silva, L.O. ePastor Corrales, Marcial A.Singh, S.P.[Choice of location for bacterial blight evaluation in common bean]Choice of location for bacterial blight evaluation in common bean

The effect of visual screening for grain yield was studied in 9 bean populations resulting from 3 different crossings (single, 3- way, and modified-double crosses) involving different groups of genetic pools from Central America and the Andes. The best yielding lines in the F2 and F3 generations ...


PATINO, H.Singh, S.P.[Visual selection for seed yield in the F2 and F3 generations of nine common bean crosses]Visual selection for seed yield in the F2 and F3 generations of nine common bean crosses

Thirteen male sterile plants were identified in a yield trial of bean germplasm accession G08063 grown at CIAT-Palmira in 1977. Line G08063 is indeterminate, type III with postrate growth; it is relatively early and produces small white seeds. A fertility score (less than 1.3 sterile, 1.3-2.5 par...


Singh, S.P.White, J.W.Gutiérrez, J.A.[Male sterility in dry beans]Male sterility in dry beans

Progress on the observations regarding genetic variability in some Phaseolus spp. is summarized, based on an analysis of phaseollin and isozime variability. In a group of 270 cv. from Latin America, most of them wild, the variability of 8 loci of isozimes was analyzed. Binding data of 5 of these ...


Schinkel, C.Singh, S.P.Gepts, Paul L.[Patterns of genetic diversity in Phaseolus beans]Patterns of genetic diversity in Phaseolus beans
Singh, U.Ram, P.C.Singh, S.P.Prasad, B.[Alkalinity induced changes in mobilization efficiency seedling vigour amylase and protease activity in rice genotypes]Alkalinity induced changes in mobilization efficiency seedling vigour amylase and protease activity in rice genotypes

A field trial was carried out in CIAT-Quilichao (Colombia) to determine seed yield heritability, wt. of 100 seeds and days to maturity, in soils with high and low levels of fertilization. Plots were fertilized with 600 and 1800 kg of compost (15-15-15)/ha. The F2 and F3 generations of 22 single c...


Urrea, Carlos A.Singh, S.P.[Heritability of seed yield, 100-seed weight, and days to maturity in high and low soil fertility in common bean]Heritability of seed yield, 100-seed weight, and days to maturity in high and low soil fertility in common bean

A brief reference is made to new bean germplasm accessions and breeding lines identified at CIAT with specific architectural traits. Examples are given for type I bush beans with 10 or more nodes on the main stem, erect branching, suppressed branching, short foliage and internodes, lanceolate lea...


Singh, S.P.Gutiérrez, J.A.[Sources of some architectural traits in dry bush beans, Phaseolus vulgaris L]Sources of some architectural traits in dry bush beans, Phaseolus vulgaris L

Studies were conducted at CIAT to measure the phenotypic correlations between several architectural characteristics and yield of dry beans as affected by plant density and environment (location). Four bean cv. were used to represent each bush bean growth habit (I, II, III). All 12 cv. were grown ...


Nienhuis, JamesSingh, S.P.[Phenotypic correlations between architectural characteristics and grain yield in dry beans as affected by plant density and locations]Phenotypic correlations between architectural characteristics and grain yield in dry beans as affected by plant density and locations

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