National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Tomato is the second most important vegetable grown in India. It faces heavy attack by pest and diseases in tropical countries. Biotic and abiotic stress is major challenge for higher production of tomatoes. Thrips complex are important sucking pests which also cause more damage as vector species for virus diseases. So controlling the vector by screening against thrips damage/preference is the major concern for screening and developing lines resistant to thrips. Five elite lines were procured from World Vegetable Centre, AVRDC, Taiwan. Field screening and lab screening was carried out for evaluating thrips resistance. Four different thrip species viz., Thrips palmi, Scirtothrips dorsalis, Gynaikothrips uzeli and Thrips hawaiiensis were recorded in two dry seasons from collected thrips complex. Thrips count/tap was significantly less or almost nill in two wild accessions Solanum galapagense (VI037241) and S.cheesmaniae (VI037240) than susceptible genotype Solanum lycopersicum (CL5915)/(CH45). Although total thrips count was more in Solanum habrochaites and Solanum habrochaites var glabratum but in lab assay it showed less preference for egg laying and also in terms of feeding. In vitro leaf disc assay has shown high mortality of larva and entrapped larvae died because of sticky exudates from high glandular trichomes. Field screening has shown high resistance to two of the wild accessions in terms of thrips catch/tap. Lab assay has shown less preference to all the four wild accessions for egg laying and feeding except S.lycopersicum(CL5915). These assays can help to get an insight about high glandular trichome density and thrips resistance which can help in developing TOSPO virus resistant lines for future.
Citations |
 |
 |
 |
 |
