Vol. 11, Issue 11 (2022)

Author(s):
Rajeshwari Kurre

Abstract:
Production and productivity of rice is reduced greatly due to the emerging disease-causing grain discoloration. The disease is a complex symptom due to the association of a number of pathogenic and saprophytic fungi that infect the rice grains both in field and storage conditions. These pathogens not only reduce yield and quality, but also produce harmful mycotoxins which are detrimental to human and animal life. Looking into the incidence and severity of the disease, present investigation was undertaken to assess the disease incidence among the popular 34 rice varieties release from, Raipur, Chhattisgarh in RABLCARS, Chhuikhadan and associated mycoflora causing grain discoloration. The results indicated that, maximum Percent Disease Incidence (PDI) was recorded in Chhattisgarh Bhavya Dhan followed by Indira Barani Dhan-1 whereas least disease incidence by mycoflora was recorded from variety, Trombey C.G Vishnubhog Mutant. This study clearly indicated that the disease incidence and yield losses due to grain discoloration varies with the different varieties of Chhattisgarh. Moderate to severe disease incidence among thirty-four rice varieties was noticed. Further, it was observed that, the disease affects seed growth and quality parameters which may leads to reduced grain yield.