EFFECT OF TOMATO SPOTTED WILT VIRUS (TSWV) ON ROOT DEPTH, WEIGHT AND YIELD OF TOMATO VARIETIES IN SOUTHERN BANGLADESH

A A Farooq, M N Alam and A M Akanda
Journal of the Sylhet Agricultural University, Volume 4, Issue 2, 2017, Pages 179-190

Abstract:

An attempt was made to evaluate the impact of Tomato Spotted Wilt Virus (TSWV) on root depth, fresh root weight, dry root weight plant-1 and yield of twenty tomato varieties namely BARI Tomato-1, BARI Tomato-2, BARI Tomato-3, BARI Tomato-4, BARI Tomato-5, BARI Tomato-6, BARI Tomato-7, BARI Tomato-8, BARI Tomato-9, BARI Tomato-10, BARI Tomato-11, BARI Tomato-12, BARI Tomato-13, BARI Tomato-14, Roma VF T-311, Unnayan F1, Udayan F1, Rio Grande, Tidy and Digonta. The study was conducted at Amtoli Upazilla in Barguna district under the AEZ 18 in Bangladesh during winter season of 2008-09. BARI-T2 showed the highest (45.19%) reduction of root depth and the lowest (30.18%) reduction was recorded in Digonta. The percent reduction of fresh root weight plant-1 was highest (46.94%) in BARI-T1 and lowest (28.11%) in Rio Grande. The percent reduction of dry root weight plant-1 was lowest (32.73%) in BARI-T11 and highest (44.12%) in Roma VF. The fruit yield reduction was observed higher due to early infection (67-87%) followed by mid (40-56%) and late infection (20-29%) stages in all the varieties. The highest fruit yield reduction was obtained in BARI-T2 at early stage of infection and the lowest in BARI-T10 at late infection stage. The reduction of fruit yield plant-1 was ranged from 44.10-55.68% depending on tomato varieties. The highest fruit yield reduction was recorded in BARI-T2, while the lowest in BARI-T12 due to TSWV infection

Keywords:

Tomato spotted wilt virus, tomato, root, impact


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A A Farooq, M N Alam and A M Akanda. 2017. EFFECT OF TOMATO SPOTTED WILT VIRUS (TSWV) ON ROOT DEPTH, WEIGHT AND YIELD OF TOMATO VARIETIES IN SOUTHERN BANGLADESH, Journal of the Sylhet Agricultural University 4(2): 179-190.