Evaluation of AVRDC tomato advanced lines for high yield, multiple disease resistance and long shelf life in Bangladesh

M.A. Goffar, M.A. Rahman, P. Hanson, A.L. Acedo, W. Easdown, J.A. Hughes, J.D.H. Keatinge
Tomato is one of the most important vegetables in Bangladesh and other countries worldwide. The Bangladesh Agricultural Research Institute (BARI) and seed companies have supplied several open-pollinated and hybrid tomato cultivars for commercial production in the country. However, most of these cultivars are susceptible to viral and wilt diseases and the fruit have poor shelf life; therefore, these cultivars are not desired by farmers. This study was conducted to evaluate nine advanced lines from AVRDC - The World Vegetable Center (AVRDC) (CLN3940, CLN3946, CLN3947, CLN3948, CLN3949, CLN3953, CLN3954, CLN3961 and 'Tanya') for yield, disease resistance and keeping quality. BARI cultivar 'Tomato-14' was used as the local control. The tomato lines differed significantly in most of the parameters studied. Flowering of the advanced lines was more uniform and earlier than in the control, except for CLN3946. Plant height of the advanced lines was also more than 30 cm taller despite a determinate growth habit compared with the semi-determinate control, except for CLN3947, CLN3953 and 'Tanya'. No entries showed symptoms of early blight, bacterial wilt, Fusarium wilt or southern blight disease. Slight damage by late blight disease and yellow leaf curl disease was noted only in CLN3953, which was similar to that of the control cultivar, while 'Tanya' was more severely affected. The other lines did not show any of these diseases. Damage by tomato fruit borer was noted only in CLN3949 and 'Tanya'. Yield was highest in CLN3946 and CLN3948, with more than 3 kg plant-1 or more than 80 t ha-1. CLN3949 and CLN3954 had similar yields to the control (73 t/ha). The other lines had lower yields than the control, with 'Tanya' as the lowest yielder (less than 2 kg plant-1 or about 48 t ha-1). Shelf life was found to be longest (18-20 days) in CLN3946, CLN3948, CLN3949 and CLN3954 fruits whereas the shelf life of control fruits was only 10 days. However, these four lines showed relatively lower firmness, soluble solids and vitamin C content than the control. It will thus be worthwhile to verify further the performance of these four promising lines in advanced yield trials.
Goffar, M.A., Rahman, M.A., Hanson, P., Acedo, A.L., Easdown, W., Hughes, J.A. and Keatinge, J.D.H. (2017). Evaluation of AVRDC tomato advanced lines for high yield, multiple disease resistance and long shelf life in Bangladesh. Acta Hortic. 1179, 311-316
DOI: 10.17660/ActaHortic.2017.1179.48
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Acta Horticulturae