In a screening trial, 98 genotypes and cultivars were tested under field conditions. Among the 50 NBPGR lines, 20 AICRIP genotypes, 5 IIHR genotypes and 23 cultivars and hybrids, EC-514117, EC-514190, LE-23, LE-30, Arka Vikas, Akra Abhaya and Akra Saurabh were found resistant to GBNV-To.
The complete nucleotide sequence was determined for coat protein (CP) gene of Groundnut bud necrosis virus (GBNV) infecting tomato in Andhra Pradesh (AP). The sequenced region in GBNV-To isolate contained a single open reading frame of 831 bases that could potentially code for a CP of 276 amino acids. The CP gene sequence of GBNV-To has 93-99% sequence homology with that of the gene sequences of other GBNV isolates prevalent on different hosts in India. In the present study, it is determined that the GBNV-To isolate of tomato prevalent in AP is regarded as the same strain of GBNV already existing in India.
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