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sur le développement des zones arides et semi-arides

Titre : Studies on the establishment of a core collection of pearl millet [Pennisetum glaucum (L.) R. Br.1 germplasm

Auteur : Bhattacharjee, R

Etablissement de soutenance : CCS Haryana Agricultural University (Hisar)

Grade : PhD thesis (2000)

Résumé
In order to deal with world collect ono f pearl m lleta nd its elTectivc otiliz tion,1 11s estahlisliment of a core collection is one ofthe ideal appn nche. I:urthcr, an assessnicnt 111’ genetic diversity based on morpho-agronomic cliaracrers only m ght be biased hccause distinct niorphotypes can result from a few mutations and share a comnion genetic background. Therefore, molecular markers are essential for explaining whether existing genetic variability, assessed by measuring morpl o-agronomic characters, is related to genetic diversity. This may be assessed by measuring allelic frequencies using molecular markers. Thus, the present study was undertaken with an objective to establish a pearl millet core collection that represents a complete range of genetic diversity of the world collection and to achieve the following objectives : To compare multivariate vs. hierarchical classification for determining core collections that maximizes diversity. To evaluate the adequacy of mean characterization data to determine core collection and do diversity assessment in a cross-pollinated crop. To determine the extent of diversity within and between accessions of established core collection using morphological traits and molecular markers.

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