EFFECT OF SALT STRESS ON MORPHO-PHYSIOLOGICAL TRAITS OF OKRA GENOTYPES (Abelmoschus esculentus L.)

Abstract

An experiment was undertaken in the Department of Genetics and Plant Breeding, SAU, Dhaka, to select salt-tolerant okra genotype during August 2022 to April 2023. Salt experiment with eight okra genotypes treated with T 0 ds/m) and T 3 ix

(control), T 1 (3 ds/m), T 2 (9 ds/m) salt folding CRD design. Genotype stress relationship was assessed using agromorphogenic and physiological characteristics. T 0 and T 0 V 7 V 1 (35.00 days) had the shortest initial blooming times while longest time taken for first flowering was found in T 3 whereas T 0 longest in T 3 In T 0 T 3 V 8 V 1 , T 0 , T 3 V 4 V 1 , T 0 V 4 V 5 V 5 , T 0 and T 3 , T 0 V 6 and T 3 V 7 V 2 , T 0 V 3 (20.0g) was recorded in T 0 , T 1 V 1 V 4 (43 days). T 1 and T 1 V 5 V 6 (6 (35.00 days) took 48 days to blossom 50%, took 41 days. First fruit setting took the (46.00 days) and the quickest in T 0 V 7 and T 0 V 8 V 1 and T 0 V 5 (38.00 days). the highest fruit number (9.00) per plant whereas had the lowest (3.00). The maximum individual fruit weight V 2 and T 0 V 3 The maximum fruit length was 13.63 cm in T 0 The lowest fruit diameter (14.32 mm) was in T 3 in T 0 V 2 , T 0 V 3 18.00 gm in T 3 , T 0 V 5 V 4 while the lowest was 6.67g in T 3 V 3 V 5 and T 3 and the lowest was 8.03 cm in T 3 V 5 , while the biggest (20.69 mm) was . Maximum yield per plant was 158 gm in T 0 V 2 V 7 V 4 and lowest was . When salinity and okra genotypes interact, physiological traits vary. The SPAD value was greatest in T 0 experiment results showed that V 6 V 4 (55.33) and lowest in T 3 V 7 (29.58). Salinity (OK 285 Okra) responded well under T 2 treatment, suggesting suitable for mild to moderate saline prone areas. V 8 and V 3 (Hira) worked well in T 2 prone areas.