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- Title
SCREENING OF PARTHENOCARPIC CUCUMBER GENOTYPES AGAINST TWO SPOTTED SPIDER MITES (TETRANYCHUS URTICAE KOCH).
- Authors
Vignesh, M.; Patil, R. K.
- Abstract
Parthenocarpic cucumber is recently introduced crop in India to produce the cucumber under greenhouse condition. The major constrain in the production of the crop is sucking pests infestation. Among various sucking pests, two spotted spider mite (Tetranychus urticae Koch) is a major pest during the summer season. On search of the resistance against the mite pest in the parthenocarpic cucumber genotypes, screening has been done during (March-June) 2017 & 2018. Totally eleven genotypes were screened for the mite resistance. Among the genotypes screened there was no significant difference in case of number of T. urticae recorded per cm² of leaf on both the seasons. But while looking into the visual scoring KPCH-1 variety recorded comparatively good average score (2.95), the lesser yield loss (62.36%) and per cent dried leaves (53.79%) comparing to the other varieties despite the heavy mite infestation; which shows the presence of slight tolerance mechanism. The variety Multistar yielded the maximum yield of 7.12Kg fruits per vine among the genotypes tested in the control plot but lost 84.21 per cent yield for the mite infestation as it produced only 1.13Kg fruits per vine, which clearly depicts the higher sensitivity of this genotype to the mite infestation. All the other genotypes screened were found to be on par with each other as they were found equally sensitive towards the mite infestation.
- Subjects
INDIA; TWO-spotted spider mite; SPIDER mites; GENOTYPES; MITE infestations; AGRICULTURAL productivity; GREENHOUSE plants; CUCUMBERS
- Publication
Journal of Experimental Zoology India, 2020, Vol 23, Issue 1, p201
- ISSN
0972-0030
- Publication type
Article