VARIETAL REACTION OF NONSENESCENT SORGHUMS TO THE PATHOGENS CAUSING ROOT AND STALK ROT OF SORGHUM IN INDIA

Twenty-five non-senescent sorghum genotypes were screened for stalk ro t reaction against the five stalk rot pathogens inoculated individuall y by the toothpick inoculation method under field conditions. Five gen otypes (Q 101, Q 102, Q 103, Q 104 and PQ 54) were found resistant (<5 % plants lodged) against all the five stalk rot pathogens. More greene r leaf area at physiological maturity, confirmed the resistance in the non-senescent sorghum genotypes. E 36-1, a stalk rot-resistant genoty pe, showed resistance against all the pathogens except Fusarium monili forme. There was strong positive correlation between all the stalk rot disease evaluation parameters.