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Pal Soumita,Karmakar Prasun,Chattopadhyay Arup,Ghosh Sunil Kumar 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.2
Tomato production in the tropics is threatened by whitefly infestation and tomato leaf curl virus (ToLCV) causing severe economic losses. No stable resistance to these biotic challenges has been identified in eastern India. Therefore, initial screening of 19 advance breeding lines of tomato was carried out during the year 2016–17. Based on the whitefly population per leaf and tomato leaf curl disease severity, eight tomato genotypes were selected for final screening during the year 2017–18. Morphological leaf traits and biochemical parameters in tomato leaf were assessed in selected genotypes and considered as potential mediators of resistance. Significant variation was observed for whitefly infestation and ToLCV disease severity among the tomato genotypes tested. Higher leaf trichome density with narrow and thinner leaves and higher total phenol content in leaf emerged as reliable morphological and biochemical markers for early selection of tomato genotype resistant to whitefly and ToLCV disease. The resistance of tomato genotypes 2016/Res-1, 2015/Res-5, 2014/Res-1 and 2014/Res-4 to both whitefly and ToLCV disease is based on antixenotic properties and they could be utilized in future breeding to enhance stable resistance against these biotic challenges.
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