Evaluation of sugarcane genotypes for resistance to whip smut caused by Ustilago scitaminea Sydow

摘要

Thirty one sugarcane genotypes along with six checks were tested against whip smut disease under artificial inoculation conditions in the field during three consecutive Sum seasons from 2006-07 to 2008-09. Out of 31 genotypes screened for their resistance to sugarcane smut caused by Ustilago scitaminea Sydow, only one genotype, i.e., CoM 0265 from Midlate group showed resistant reaction to smut, 11 genotypes viz., Co O_302, Co O_308, Co O_315, CoM 99O_3, CoVc 9982, Co 0211, Co 0213, Co 0218, Co O_311, Co O_317 and CoM O_325 were found to be moderately resistant. The remaining genotypes fell in moderately susceptible to highly susceptible category.