Ergot resistance in sorghum in relation to flowering, inoculation technique and disease development

Musabyimana, T and Sehene, C and Bandyopadhyay, R (1995) Ergot resistance in sorghum in relation to flowering, inoculation technique and disease development. Plant Pathology, 44 (1). pp. 109-115. ISSN 1365-3059

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Ergot is an important disease of sorghum (Sorghum bicolor) in parts of Africa and Asia. Studies were conducted to determine the relationship between flowering biology and ergot infection, and to develop an artificial field-screening technique to identify ergot resistance in sorghum. Spikelets resisted infection after anthesis, but each day's delay in anthesis after inoculation supported 8-3% more ergot. The screening technique consisted of three components: trimming of panicles to remove pollinated spikelets before inoculation, a single inoculation of trimmed panicles, and panicle bagging for 7-10 days. Inoculated panicles were evaluated by a qualitative visual rating method (on a 1-5 scale) and a quantitative spikelet counting method. Selected accessions from the world collection of sorghum germplasm were screened at Karama Research Station, Rwanda, for two seasons and 12 ergot-resistant lines were identified. These were also resistant at ICRISAT Centre, India.

Item Type: Article
Subjects: Mandate crops > Sorghum
Depositing User: Library ICRISAT
Date Deposited: 27 Oct 2011 05:17
Last Modified: 27 Oct 2011 05:17
Official URL:
Projects: Collaborative project of ICAR and ICRISAT
Funders: International Crops Research Institute for the Semi-Arid Tropics
Acknowledgement: The research reported in this paper is the result of a 3-year collaborative project between Institut des Sciences Agronomiques du Rwanda (ISAR) and ICRISAT, operated through Eastern Africa Cereals and Legumes Research Network, Nairobi, Kenya. We thank Dr L. Gahamanyi, Dr V. Guiragossian, and Dr L. K. Mughogho for their guidance and support. Funds from ICRISAT Deputy Director General's Africa Fund partially defrayed cost of this research. Submitted as ICRISAT Joumal Article No. 1560
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