Abstract
TrombayBidhanMustard-204 (TBM-204) has been notified throughCentral varietyrelease committee (CVRC) for cultivation in the state of West Bengal [S.O.No. 3220 (E) 5 th September, 2019]. The variety recorded a significant increase of 23% over the national check, Kranti (1213 kg/ha) in initial varietal trial (IVT) under timely sown rainfed conditions of Zone-V during rabi 2016-17. Further, the variety demonstrated a potential average seed yield of 1336 kg/ha compared to national check Kranti (1211 kg/ha), zonal check Pusa Bold (1159 kg/ha) and local check B-9 (948 kg/ha) in multi-location yield trial conducted at different agroclimatic zones of West Bengal over 4 years. TBM-204 is tolerant to insect pest aphids and diseases like Alternaria blight and white rust under field conditions. The variety, TBM-204 with yellow seed coat and high oil content (41%) is also preferred by the farmers because it does not lodge or shatter at maturity. The variety with higher seed yield and B:C ratio over B-9 in field demonstration is proposed as an alternative to B-9. Molecular marker analysis depicted distinct SSR alleles for TBM-204 compared to Kranti and Pusa Bold.
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