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. ISSN 0925-9864

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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 underambient conditions (20–40 °C,30–80%RH) and germination was tested at 12-month'sintervals. The seeds lost germination completely after six years ofstorage in all treatments. Analysis of variance of the estimates of potential seed longevity (i.e. the seed lot constantK i of the seed viabilityequation) showed significant effects of water stress andpollination 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(K i = 2.8) in theirrigated control, and averaged over genotypes and irrigationtreatments, it was greatest (K i= 3.1) in seeds produced by open pollination. Theimplications of these results were discussed in relation to germplasmseed production

Item Type: Article
Uncontrolled Keywords: Germplasm regeneration; Pearl millet; Pollination control; Seed longevity; Water stress
Subjects: Mandate crops > Millets
Depositing User: Ms K Syamalamba
Date Deposited: 16 Jan 2013 10:59
Last Modified: 07 Feb 2014 05:39
URI: http://oar.icrisat.org/id/eprint/6426
Official URL: http://dx.doi.org/10.1023/A:1014796825318
Acknowledgement: UNSPECIFIED
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