MORPHOLOGICAL AND YIELD CHARACTERS OF DIFFERENT TOMATO (Lycopersicon esculentum L.) GENOTYPES AS INFLUENCED BY DROUGHT STRESS

Abstract

An experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Dhaka, during the period from October 2018 to February 2019, to find out the morphological and yield characters of different tomato (Lycopersicon esculentum L.) genotypes as influenced by drought stress. Three varieties viz. V (BARI tomato-2), V 2 (BARI tomto-5) and V 3 (BARI tomato-7) and four drought stress viz. T 1 (control; no stress), T 1 (Drought stress at early fruiting stage), T (Drought stress at mid fruiting stage) and T 3 2 (Drought stress at late fruiting stage) were considered for two factors experiment under the present study. Results showed that the variety, V (BARI tomato-7) gave the best result regarding yield (60.96 t ha -1 0 3 ) under no stress (T ) condition compared to V 1 (BARI tomato-2) and V (BARI tomto-5) even under drought stress regarding T 1 2 (Drought stress at early fruiting stage), T (Drought stress at mid fruiting stage) and T 3 2 (Drought stress at late fruiting stage) the highest yield was obtained from V 3 (BARI tomato-7) (43.72, 56.87 and 68.08 t ha , respectively) compared to performance of other varieties under drought stress. Considering relative performance on total dry weight plant -1 (shoot + root), V 1 T 3 , V 2 T 3 -1 and V showed better performance. So, it can be decided that the variety V 1 3 T 3 (BARI tomato-2), V

(BARI tomto-5) and V (BARI tomato-7) can be considered as more tolerant against drought stress but V 3 3 (BARI tomato-7) showed best performance in terms of best morpho-physiological parameters and yield. Treatment T (Drought stress at late fruiting stage) showed better result on growth and yield performance whereas drought stress at early fruiting stage to till harvest (T 1 3 ) was the most affected fruiting stage considering. Regarding combined effect of variety and drought stress, V (drought stress at late fruiting stage with variety BARI tomato-7) gave best performance regarding morpho-physiological and yield performance excluding control. 3 T 3 0 2