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Assessment of anthracnose resistance (Colletotrichum graminicola) in sorghum (Sorghum bicolor) germplasm under field conditions in Nigeria

Published online by Cambridge University Press:  12 April 2002

P. S. MARLEY
Affiliation:
Department of Crop Protection, Institute for Agricultural Research, Ahmadu Bello University, Samaru, Zaria, Nigeria
O. AJAYI
Affiliation:
West African Sorghum Improvement Program, International Institute for Semi-Arid Tropics (ICRISAT), Bagauda, Kano, Nigeria

Abstract

Twenty-one elite sorghum lines were assessed for resistance to foliar, peduncle, rachis, grain and overall panicle anthracnose under natural infection at Samaru and Bagauda in 1996 and 1997. Three genotypes (R 6078, IS 14384 and CCGM 1/19-1-1) were completely resistant to all forms of the disease while Nagawhite was completely resistant to foliar, peduncle and rachis but moderately resistant to panicle anthracnose. The data indicate vertical disease progression from leaves onto peduncle and the rachis. More genotypes were susceptible to grain than rachis anthracnose thus indicating that grain infection could be direct or through vertical progression and direct pathways.

Type
Research Article
Copyright
© 2002 Cambridge University Press

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