Vol. 11, Issue 8 (2022)

Author(s):
P Himabindu and Hanumanthaswamy BC

Abstract:
Study on screening of different tomato hybrids against serpentine leaf miner was carried out during 2018-19, Rabi at KVK farm, Shivamogga. Ten hybrids were screened for their susceptibility to serpentine leaf miner, L. trifolii based on number of live mines/five compound leaves, per cent damaged leaves and yield parameters. Two from IIHR, Bangalore (Arka Samrat and Arka Rakshak) and other eight were local hybrids (Moulya, Alankar, Rishika, LHT Pooja, Aishwarya, Namadhari, PHS-448 and Soubhagya). The hybrids Namadhari (3.61 mines) and Moulya (4.81 mines) recorded lowest no. of mines and the hybrids Soubhagya (14.53 mines), Arka Rakshak (15.12 mines) and PHS-448 (17.68 mines) recorded highest number of mines. Highest per cent damaged leaves was recorded in the hybrids PHS-448, Aishwarya and Soubhagyathat were on par with each other with 66.65per cent, 64.17per cent and 62.92per cent damaged leaves, respectively. The hybrids Arka Samrat and Arka Rakshak recorded significantly higher yield of 55.26 and 54.46 t/ha, respectively. The hybrid PHS-448 recorded significantly lowest yield (39.23 t/ha) among the hybrids. Based on the susceptibility index, the hybrids Namadhari and Moulya were designated less susceptible. The hybrids Alankar, Rishika and LHT Pooja were moderately susceptible and the highly susceptible hybrids were Aishwarya, Arka Samrat, Soubhagya, Arka Rakshak and PHS-448.