Seedborne infection of Eleusine coracana by Bipolaris nodulosa and Pyricularia grisea in Uganda and Kenya

Pande, S and Mukuru, S Z and Odhiambo, R O and Karunakar, R I (1994) Seedborne infection of Eleusine coracana by Bipolaris nodulosa and Pyricularia grisea in Uganda and Kenya. Plant Disease, 78 (1). pp. 60-63. ISSN 0191-2917

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Abstract

Seed samples of finger millet (Eleusine coracana) collected from Uganda and Kenya had mixed infections with Bipolaris nodulosa (4-49%) and Pyricularia grisea (7-55%). Most samples showed poor germination and were unfit for sowing because of a high percentage of Seedborne infection. We obtained similar seed infection counts with the standard blotter, deep-freezing blotter, and agar plate methods, which suggests that any of these methods could be used for routine seed health testing. However, sporulation was better on frozen seeds. Gray or black discolored seeds had higher levels of infection by P. grisea than apparently healthy, normal reddish brown seeds. Plating of seed components showed that both fungi were present in the pericarp and endosperm but not in the embryo. Seed transmission tests demonstrated the ability of these fungi to kill young seedlings.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Seed samples of finger millet (Eleusine coracana) collected from Uganda and Kenya had mixed infections with Bipolaris nodulosa (4-49%) and Pyricularia grisea (7-55%). Most samples showed poor germination and were unfit for sowing because of a high percentage of Seedborne infection. We obtained similar seed infection counts with the standard blotter, deep-freezing blotter, and agar plate methods, which suggests that any of these methods could be used for routine seed health testing. However, sporulation was better on frozen seeds. Gray or black discolored seeds had higher levels of infection by P. grisea than apparently healthy, normal reddish brown seeds. Plating of seed components showed that both fungi were present in the pericarp and endosperm but not in the embryo. Seed transmission tests demonstrated the ability of these fungi to kill young seedlings.
Subjects:	Mandate crops > Millets Others > Plant Virology
Depositing User:	Mr Charan Sai Ch
Date Deposited:	23 Oct 2011 12:16
Last Modified:	21 Aug 2013 05:42
URI:	http://oar.icrisat.org/id/eprint/3142
Official URL:	http://dx.doi.org/10.1094/PD-78-0060
Projects:	UNSPECIFIED
Funders:	International Crops Research Institute for the Semi-Arid Tropics
Acknowledgement:	UNSPECIFIED
Links:	Author

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