Heat stress has severe implications on the growth of both field and garden grown vegetable crops. So, the study was contemplated to compare growth, antioxidant enzymes and physiological responses to heat stress between field and glasshouse grown pole and bush type Lablab purpureus. L phenotypical groups. Four of each pole (VRSEM-855, VRSEM-893, VRSEM-830 and VRSEM-860) and (Konkan Bhusan, Arka Vijay, Arka Jay and Ankur Gouldy) bush type’s phenotypical groups were exposed to heat stress by pot culturing at optimal condition (41.6 C/36.2 Heat stress has severe implications on the growth of both field and garden grown vegetable crops. So, the study was contemplated to compare growth, antioxidant enzymes and physiological responses to heat stress between field and glasshouse grown pole and bush type Lablab purpureus. L phenotypical groups. Four of each pole (VRSEM-855, VRSEM-893, VRSEM-830 and VRSEM-860) and (Konkan Bhusan, Arka Vijay, Arka Jay and Ankur Gouldy) bush type’s phenotypical groups were exposed to heat stress by pot culturing at optimal condition (41.6 ℃/36.2 ℃ DNT) in a glasshouse. Severe heat stress causes significant reduction in growth, yield, relative water content (RWC), antioxidant enzymes and proline content resulted in severe membrane lipid peroxidation in three bush type bean phenotypical groups. All these parameters in the pole beans were comparatively less responsive to severe heat stress, suggesting that the bush type phenotypical groups were sensitive to heat tolerance than pole type phenotypical groups. Differential heat responses between pole and bush type bean phenotypical groups could be associated with the differences in the severity of leaf senescence, which were manifested by modification in proline, electrolytic leakage and malondialdehyde levels. DNT) in a glasshouse. Severe heat stress causes significant reduction in growth, yield, relative water content (RWC), antioxidant enzymes and proline content resulted in severe membrane lipid peroxidation in three bush type bean phenotypical groups. All these parameters in the pole beans were comparatively less responsive to severe heat stress, suggesting that the bush type phenotypical groups were sensitive to heat tolerance than pole type phenotypical groups. Differential heat responses between pole and bush type bean phenotypical groups could be associated with the differences in the severity of leaf senescence, which were manifested by modification in proline, electrolytic leakage and malondialdehyde levels.
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