Morphological and molecular diversity within Algerian cowpea (Vigna unguiculata (L.) Walp.) landraces

in Genetic Resources and Crop Evolution (2010), (57), 371-386

Genetic Diversity of Andean Tuber Crop Species in the in situ Microcenter of Huanuco, Peru

in Crop Science (2010), 50(5), 1915-1923

Andean tuber crop species oca (Oxalis tuberosa Molina), ulluco (Ullucus tuberosus Caldas), and mashua (Tropaeolum tuberosum Ruiz & Pav.) play major roles in Andean communities. These species show high ... [more ▼]

Andean tuber crop species oca (Oxalis tuberosa Molina), ulluco (Ullucus tuberosus Caldas), and mashua (Tropaeolum tuberosum Ruiz & Pav.) play major roles in Andean communities. These species show high variability but are threatened with genetic erosion. To study the management of genetic resources of neglected vegetatively propagated crop species, we studied genetic diversity and structure of these species in an in situ diversity microcenter (Huanuco, Peru). A sample of 15 varieties of oca, 15 of ulluco, and 26 of mashua was analyzed with the inter simple sequence repeats (ISSR) molecular markers. Mean genetic distances and global genetic diversities were high for the three species, with higher values for mashua than for oca and ulluco. Assignment technique divided both oca and ulluco samples into two genetic clusters; the mashua sample probably belongs to a single genetic cluster. Inter simple sequence repeats (ISSR) technique showed intravarietal genetic variability for most varieties, suggesting an underestimation of the in situ genetic variability. These results are discussed considering how variation in breeding systems and farmers' practice influenced patterns of genetic diversity. Our findings confirm the hypothesis of a considerable amount of variability found in neglected Andean tubers and are essential to deserve adequate conservation strategies and to maintain genetic resources of neglected Andean tuber crop species under a threat of genetic erosion. [less ▲]

Genetic diversity of the andean tuber crop species ullucus tuberosus as revealed by molecular (ISSR) and morphological markers

in Belgian Journal of Botany (2009), 142(1), 68-82

Développement d'embryons zygotiques hybrides entre un cultivar (NI637) de Phaseolus vulgaris L. et un génotype sauvage (NI108) de P. coccineus L.

in International Journal of Biology and Chemical Sciences (2009), 3(1),

Morphological and allozyme variation in a collection of Cucumeropsis mannii Naudin (Cucurbitaceae) from Côte d'Ivoire

in Biochemical Systematics & Ecology (2008), (36), 777-789

A preliminary study of the genetic diversity of Bolivian oca (Oxalis tuberosa Mol.) varieties maintained in situ and ex situ through the utilization of ISSR molecular markers

in Genetic Resources and Crop Evolution (2007), 54

Etude de la diversité génétique de l'ulluco (Ullucus tuberosus Loz.) en conservation ex situ

Conference given outside the academic context (2006)

Optimization Of Issr Marker For African Edible-Seeded Cucurbitaceae Species' Genetic Diversity Analysis

in African Journal of Biotechnology (2006), 5(2), 83-87

Dynamiques locales de la conservation in situ à la ferme de la diversité de tubercules andins dans le micro-réservoir de Candelaria

Conference given outside the academic context (2004)

Etude de la structure et de la diversité génétique de la oca (Oxalis tuberosa Mol.) conservée in situ à Candelaria - Bolivie

Poster (2004)