Abstract
The present study was undertaken to characterize pearl millet [Pennisetum glaucum (L.) R. Br.] hybrids and their parents on the basis of morphological descriptors with the objective to identify key diagnostic characters of the genotypes. A set of 24 pearl millet genotypes (7 hybrids and their 17 parental lines) was evaluated in randomized block design (RBD) with three replications at two locations, Chaudhary Charan Singh Haryana Agricultural University (CCS HAU) Hisar and Regional Research Station (RRS) Bawal (Rewari) under irrigated and rainfed conditions, respectively, during kharif, 2011. Observations were recorded for 28 morphological and yield characters. All genotypes were classified into different groups based on each character. Nodal pubescence, nodal pigmentation, spike shape, spike density, spike tip sterility, sheath pubescence and spikelet glum colour distinguished all the 24 genotypes by assigning them key diagnostic features that would certainly help the plant breeders, seed growers and seed certification agencies to use these diagnostic characters. Hybrids HHB 216, HHB 226, HHB 117 could be differentiated by bristle length, spikelet glume colour and spike tip sterility. Majority of the morphological characters found to be dominant in the hybrids were contributed by the male parent. Key words: Pearl millet, morphological descriptor, characterization, key diagnostic character.
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