Ergot Susceptibility in Relation to Cytoplasmic Male Sterility in Pearl Millet

Thakur, R P and Rao, V P and King, S B (1989) Ergot Susceptibility in Relation to Cytoplasmic Male Sterility in Pearl Millet. Plant Disease, 73 (8). pp. 676-678. ISSN 0191-2917

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The association of cytoplasmic male sterility with susceptibility to ergot (caused by Claviceps fusiformis) in pearl millet was studied in seven cytoplasmic male-sterile (CMS) lines (A lines), their corresponding maintainer lines (B lines), 10 pollinator lines (R lines), and 48 F1 hybrids (A × R and B × R). Four of the seven A lines were significantly more susceptible (90–97% severity) than their corresponding B lines (54–77% severity). All A × R hybrids except four were significantly more susceptible than their corresponding B × R hybrids, indicating the positive association of sterile cytoplasm with ergot susceptibility. The cytoplasmic effect on ergot susceptibility was significant in 20 of the 24 A/ B × R hybrids. The higher ergot susceptibility of A lines and A × R hybrids, compared with B lines and B × R hybrids, could be attributed to the cytoplasmic, nuclear, and cytoplasmic × nuclear factors affecting flowering events that influence ergot susceptibility. Implications of these findings in breeding CMS-based F1 hybrids are discussed

Item Type: Article
Subjects: Mandate crops > Millets
Depositing User: Library ICRISAT
Date Deposited: 12 Dec 2011 09:11
Last Modified: 12 Dec 2011 09:11
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Acknowledgement: UNSPECIFIED
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