Observational analysis identified resistant rice varieties against sheath rot pathogens, suggesting potential for future cultivation.
Sheath rot of rice has become an emerging disease in most of the rice-growing areas of north India, so the resistant varieties against sheath rot need to be developed. An effort was made to identify resistance sources against the disease caused by three different pathogens viz., Sarocladium oryzae, Fusarium verticillioides, and Fusarium fujikuroi in the region. Fifty advanced promising rice germplasm lines were inoculated with three pathogens associated with disease using the grain insertion method at the boot stage. Two lines RYT 3836 and RYT 3920 showed moderately resistant reaction to all three pathogens inoculated. RYT 3886 was resistant to both F. verticillioides & F. fujikuroi while RYT 3884 was resistant to F. fujikuroi only. However, none of the evaluated lines possessed resistance for S. oryzae.
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Kaur et al. (2024) studied this question.