Optimizing seed quality during germplasm regeneration in pearl millet

Rao, N.K. and Bramel, P.J. and Reddy, K.N. and Singh, S.D. and Girish, A.G. and Rao, S.A. and Mahalakshmi, V. (2002) Optimizing seed quality during germplasm regeneration in pearl millet. Genetic Resources and Crop Evolution, 49 (2). pp. 153-157.

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The effect of water stress during flowering and grain filling on seed longevity was studied in three pearl millet genotypes, ICTP-8202, ICTP-8203 and MBH-110. The seeds were produced by three pollination methods; open pollination, selfing (individual panicles enclosed in paper bags), and cluster bagging (panicles from 3-4 adjacent plants enclosed in a paper bag), stored in air-tight plastic bottles under ambient conditions (20-40 °C, 30-80% RH) and germination was tested at 12-month's intervals. The seeds lost germination completely after six years of storage in all treatments. Analysis of variance of the estimates of potential seed longevity (i.e. the seed lot constant Ki of the seed viability equation) showed significant effects of water stress and pollination method (P<0.01). The interaction between irrigation treatment and method of pollination control was also significant (P<0.05). Averaged over genotypes and pollination methods, potential longevity was greatest (Ki=2.8) in the irrigated control, and averaged over genotypes and irrigation treatments, it was greatest (Ki=3.1) in seeds produced by open pollination. The implications of these results were discussed in relation to germplasm seed production

Item Type: Article
Author Affiliation: International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502 324, Andhra Pradesh, India
Subjects: Plant Production
Crop Improvement > Genetics/Genomics
Crop Improvement > Plant Breeding
Crop Improvement > Seed Technology
Divisions: Millet
Depositing User: Mr B Krishnamurthy
Date Deposited: 26 Jul 2011 08:37
Last Modified: 26 Jul 2011 08:37
Official URL: http://dx.doi.org/10.1023/A:1014796825318
URI: http://eprints.icrisat.ac.in/id/eprint/2484

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