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A survey was carried out in Central Costa Rica in Jan. 1987, in an attempt to find web blight resistance in native var.; 43 samples representing 10 different taxa were found. Wild P. vulgaris was found in 2 different places in the province of San Jose; both populations presented truly wild charac...


Debouck, Daniel G.Araya Villalobos, RodolfoOcampo S., R.A.González Ugalde, W.G.[Collecting Phaseolus in Costa Rica]Collecting Phaseolus in Costa Rica
León, Carlos dePandey, Shivaji[Improvement of resistance to ear and stalk rots and agronomic traits in tropical maize gene pools]Improvement of resistance to ear and stalk rots and agronomic traits in tropical maize gene pools

No wild Phaseolus bean germplasm is currently available from seed banks for Ecuador. Because of the decisive importance of the wild forms in evolutionary studies of the bean crops, and given the key geographical situation of that country in the northern Andes, a joint exploration was recently car...


Debouck, Daniel G.Castillo T., R.Tohme, Joseph M.[Observations on little-known Phaseolus germplasm of Ecuador]Observations on little-known Phaseolus germplasm of Ecuador

[Objective] The SSR molecular markers system was optimized and constructed for genetic diversity analyses of Chinese tartary buckwheat germplasm resources,which is helpful for evaluating Chinese tartary buckwheat collections.[Method] The SSR-PCR system was optimized by [L16(45)]orthogonal design,...


Gao FZhang, Z.Wu B.[Construction and application of SSR molecular markers system for genetic diversity analysis of Chinese tartary buckwheat germplasm resources]Construction and application of SSR molecular markers system for genetic diversity analysis of Chinese tartary buckwheat germplasm resources

Badnaviruses (family Caulimoviridae, genus Badnavirus) have emerged as serious pathogens especially affecting the cultivation of tropical crops. Badnavirus sequences can be integrated in host genomes, complicating the detection of episomal infections and the assessment of viral genetic diversity ...


Turaki, A.A.Bömer, M.Silva, G.Kumar, P.L.Seal, S.E.[PCR-DGGE analysis: unravelling complex mixtures of badnavirus sequences present in yam germplasm]PCR-DGGE analysis: unravelling complex mixtures of badnavirus sequences present in yam germplasm

Molecular markers facilitate rapid and environment-neutral characterization of the pattern of genetic diversity. The International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) at Patancheru, India, has developed a large number and diverse range of maintainer lines (B-lines) and re...


Nepolean, T.Gupta, S.K.Dwivedi, S.L.Bhattacharjee, R.Rai, Kedar N.Hash, C.T.[Genetic Diversity in Maintainer and Restorer Lines of Pearl Millet]Genetic Diversity in Maintainer and Restorer Lines of Pearl Millet

The resistance of 9 bean cv. to isolates of Thanatephorus cucumeris collected from either leaves (Th-5) or roots (Rs-8) of infected plants was tested under controlled conditions in growth chambers (22-25 degrees Celsius, 80-100 percent RH and 12 h artificial light). Adequate concn. of inoculum of...


Castaño J., Mauricio[Evaluacion de germoplasma de frijol (Phaseolus vulgaris L.) para resistencia a mustia hilachosa]Evaluacion de germoplasma de frijol (Phaseolus vulgaris L.) para resistencia a mustia hilachosa

An analysis of food crop germplasm flows into and out of Bhutan was carried out to determine the extent of reliance of Bhutanese agriculture on introduced germplasm. Methods used included literature review, key informant interviews, field visits and crop pedigree analysis. Bhutan has been introdu...


Ghimiray, M.Vernooy, Ronnie[The importance and challenges of crop germplasm interdependence: the case of Bhutan]The importance and challenges of crop germplasm interdependence: the case of Bhutan

A study was initiated on selected populations of Trifolium tembense collected from the Ethiopian highlands. The species was an annual autogamous clover which is native to the African highlands. In the study, both plant and soil variables were utilized for investigating possible LbP (local breedin...


Akundabweni, L.S.Lazier, J.R.Lemme, G.[Morphological and soil measurements for determining ecotypic variation in Trifolium tembense germplasm in the Ethiopian highlands]Morphological and soil measurements for determining ecotypic variation in Trifolium tembense germplasm in the Ethiopian highlands

Alfalfa or lucerne (Medicago sativa L.) is an important forage legume grown extensively in the world. There have been relatively few investigations on the adaptation of alfalfa to soils found in suitable eco-zones in Africa. In the present investigations, twenty accessions were evaluated for tole...


Mugwira, L.M.Haque, I.[Screening forage and browse legumes germplasm to nutrient stress: I. Tolerance of Medicago sativa L. to aluminium and low phosphorus in soils and nutrient solutions]Screening forage and browse legumes germplasm to nutrient stress: I. Tolerance of Medicago sativa L. to aluminium and low phosphorus in soils and nutrient solutions

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