DEVELOPMENT AND REPRODUCTION OF SPIDER MITE SPECIES INFESTING SELECTED MEDICINAL PLANTS AND BIOCHEMICAL PROFILE OF MITE INFESTED PLANTS
| dc.contributor.advisor | Srinivasa, N. | |
| dc.contributor.author | SAFEENA MAJEED, A.A. | |
| dc.date.accessioned | 2021-09-22T10:24:17Z | |
| dc.date.available | 2021-09-22T10:24:17Z | |
| dc.date.issued | 2018-08-01 | |
| dc.description.abstract | Biology, reproduction and demography of four spider mite species infesting three medicinal plants was carried out at four different constant temperature & humidity conditions (20°-32°C; 62-85%) including damage symptomology and leaf biochemical changes subsequent to mite feeding. Female of Schizotetranychus baltazari on Murraya koenigii and Oligonychus mangiferus & Oligonychus thelytokus on Ichnocarpus frutescens developed faster (8.50, 7.10 & 8.74 days, respectively) at 30⁰C, while development of Tetranychus hirsutus female on Gymnema sylvestre was faster (10.12 days) at 32⁰C. Demography of these spider mite species revealed higher Intrinsic Rate of Natural Increase (rm) values of 0.097, 0.091, 0.095 & 0.095 females/female/day and higher Net Reproductive Rates (Ro) of 33.24, 26.60, 68.11 & 68.11 female offsprings/female/generation for S. baltazari, O. mangiferus, O. thelytokus & T. hirsutus, respectively. Higher fecundity (21-31 eggs/female) and lower Mean Generation Time (14-29 days) of O.mangiferus explained the reason for its greater abundance compared to O. thelytokus (19-27 eggs & 15–32 days) on the same host plant, I.frutescens. Adaxial feeding of S.baltazari on curry leaves resulted in grey spotting, discrete peelings of leaf cuticle, greyish-white appearance of the entire leaf, withering & defoliation. O. mangiferus & O. thelytokus feeding caused yellowish white spots, drying, withering & premature leaf-drop and T. hirsutus feeding produced orange-yellow spots & profuse webbings with large number of congregating individuals showed intuition for dispersal. Spider mites’ sap feeding damage on leaves resulted in significant reduction in carbohydrates (42–91%), proteins (55–69%) and flavonoids (18–65%), but alkaloid content increased in damaged leaves by 92% in M. koenigii, 220% in I. frutescens and 14% in G. sylvestre. | en_US |
| dc.identifier.other | Th-12022 | |
| dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810176081 | |
| dc.keywords | Oligonychus mangiferus, Oligonychus thelytokus | en_US |
| dc.language.iso | English | en_US |
| dc.pages | 125 | en_US |
| dc.publisher | University of Agricultural Sciences, Bangalore | en_US |
| dc.sub | Agricultural Entomology | en_US |
| dc.theme | SPIDER MITE SPECIES INFESTING | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | DEVELOPMENT AND REPRODUCTION OF SPIDER MITE SPECIES INFESTING SELECTED MEDICINAL PLANTS AND BIOCHEMICAL PROFILE OF MITE INFESTED PLANTS | en_US |
| dc.type | Thesis | en_US |