Effectiveness of ethrel as a male gametocide in pearl millet and its influence on ergot

Thakur, R P and Rao, V P (1988) Effectiveness of ethrel as a male gametocide in pearl millet and its influence on ergot. Plant Breeding, 101 (2). pp. 107-113. ISSN 0179-9541

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In field and greenhouse experiments, ethrel [ethephon] was tested for its male gametocidal effects on Pennisetum americanum and its subsequent effects on Claviceps development. Application at 2000 p.p.m. at the late booting or early protogyny stages was the most effective for inducing male sterility in the hybrid BJ104. Female fertility in a male-sterile line was not affected by treatment. Ethrel at 2000 p.p.m. applied at the late booting stage resulted in partial panicle exsertion, and reduced plant height and panicle length. In vitro, ethrel (2000 p.p.m.) completely inhibited pollen germination but did not affect germination of conidia of C. fusiformis. In lines differing in resistance, ergot resistance or susceptibility was not affected, probably because ethrel could not induce complete male sterility

Item Type: Article
Uncontrolled Keywords: Pennisetum americanum, claviceps fussiformis, ethrel, gametocide, induced male sterility, ergot
Subjects: Mandate crops > Millets
Depositing User: Ms K Syamalamba
Date Deposited: 02 Nov 2011 07:50
Last Modified: 02 Nov 2011 07:50
URI: http://oar.icrisat.org/id/eprint/3534
Official URL: http://dx.doi.org/10.1111/j.1439-0523.1988.tb00274...
Acknowledgement: The authors thank S.B. King, J.R. Witcombe, J. Kumar, and S.B. Chavan for their useful comments on the manuscript
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