Effect Of Host Plant On Mortification Of Flower Thrips Frankliniella Occidental'S Pergande (Thripidae: Thysanoptera) In Rose (Rosa Indica)

The experiment was laid out at Horticultural Research Sub-Station for Floriculture and landscaping, Old Shujabad Road Multan, Punjab-Pakistan during 2014-15 and 2015-16. The high value commercial varieties of rose i.e. 'Ice Berg', 'Indian Chief', 'Cardinal', and 'Surkha' (gruss-an-teplitz) were selected in the field for the study on susceptibility against the thrips (Frankliniella occidentalis). The 'Cardinal' variety of flower having 89.11 thrips per bud remains highly susceptible to flower thrips during 2014-15 & 2015-16. Whereas 'Indian chief and 'Ice burg' having statistically similar population of thrips per bud i.e. 13.14 & 10.90 thrips per bud. The 'Surkha' (gruss-an-teplitz) has low population of thrips per flower. Similarly, on flowers again cardinal variety remain at the top i.e. 35.64 thrips per flower when compared with other varieties of flowers. The Ice burg has 4.74 thrips per flower. The variety 'Surkha' and 'Indian chief has low population of thrips per flower i.e. 1.78 and 1.04. Population on leaves remain zero during throughout the period of study. Our studies concluded that the varieties 'Cardinal' is more susceptible to flower thrips, so early attention should be given to overcome thrips. A resistant germplasm that it should be included in breeding program for the development of new flowers varieties.