Assessment Of Sorghum Genotypes For Resistance To Foliar Anthracnose (colletotrichum Graminicola) Under Field Conditions

One hundred and fifty nine (159) sorghum genotypes from the International Crop Research Institute for the Semi-Arid Tropics (ICRISAT), West African National Agricultural Research Systems (NARS) and local collections were evaluated at Samaru, Nigeria for resistance to foliar anthracnose under field conditions during the 1996, 1997 and 1998 wet seasons. Disease reaction was observed six weeks after planting and disease severity assessed when plants had reached physiological maturity using a 1-9 visual rating scale. Results show that 42 genotypes showed resistant reaction while 20 and 97 genotypes showed moderately resistant and susceptible reactions respectively. Resistant genotypes included 14 ICRISAT sorghum varieties (ICSV), 4PB lines, 8 IS lines, 5 West African NARS lines, 2 SAMSORG varieties, 3NR varieties and 6 local varieties. Results herein indicate the availability of germplasm with stable resistance to foliar anthracnose. The need for assessment of these germplasm for panicle anthracnose resistance is highlighted.

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