PJB-2024-1553
Effects of benzyl amino purine on growth, antioxidants, and chlorophyll contents of Phaseolus vulgaris L. cultivated under heat stress
Subhan Danish, Rabia Abdur Rehman, Asif Maqbool, Muqarrab Ali, Muhammed Idrees, Inam Irshad, Shahid Munir, Tahani Awad Alahmadi and Mohammad Javed Ansari
Abstract
Heat stress can inhibit plant growth, delaying photosynthesis and nutrient uptake. Prolonged exposure can lead to wilting, reduced yields, and even plant death. Using benzyl amino purine (BAP) can be an effective technique to overcome this problem. Benzyl aminopurine (BAP) is a synthetic cytokinin crucial for plant growth, stimulating cell division and proliferation, promoting protein synthesis, and aiding in tissue culture techniques. The current study used BAP to amend Phaseolus vulgaris L. growth under heat stress. Four treatments, i.e., control, 0.001% BAP, 0.003% BAP, 0.005% BAP, were applied in 4 replications following a completely randomized design. Results showed that 0.005% BAP caused significant enhancement in Phaseolus vulgaris L., shoot length (~43%), root length (~62%), shoot fresh weight (~71%), root fresh weight (~90%), shoot dry weight (~29%), and root dry weight (~44%) over the control under heat stress. Compared to the control, a significant improvement in Phaseolus vulgaris L., chlorophyll a (~54%), chlorophyll b (~38%), and total chlorophyll (~70%) validates the potential of 0.005% BAP under heat stress. Furthermore, improvement in N, P, K, and Ca concentration in leaves and roots showed the effective functioning of 0.005% BAP compared to the control in heat stress. In conclusion, 0.005% BAP is recommended as the best solution for mitigating heat stress in Phaseolus vulgaris L.
To Cite this article:
Danish, S., R.A. Rehman, A. Maqbool, M. Ali, M. Idrees, I. Irshad, S. Munir, T.A. Alahmadi and M.J. Ansari. 2024. Effects of benzyl amino purine on growth, antioxidants, and chlorophyll contents of Phaseolus vulgaris L. cultivated under heat stress. Pak. J. Bot., 56(5): DOI: http://dx.doi.org/10.30848/PJB2024-5(29)
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