Evaluation of chilling tolerance potential of tomato (Solanum lycopersicum L.) genotypes under the agro-climatic conditions of Bahawalpur
Solanum lycopersicum L. is a chilling sensitive crop and shows limited growth at temperature below 12°C. In the focus area of this study, tomato is exposed to low temperature from December to February which causes significant losses in growth and productivity. To combat the issue, the present study was designed to investigate the effect of low temperature on 14 tomato genotypes. Various parameters like chlorophyll contents, antioxidants activity (superoxide dismutase, peroxidase, catalase and ascorbate peroxidase), number of fruits per plant, individual fruit weight, and yield per plant were recorded to estimate the potential of genotypes to withstand under adverse environmental conditions. The ranking of genotypes was done by giving highest score to varieties performing well in the attributes investigated and hence represented their chilling tolerance potential. The results of this study revealed that genotype L00525 was proved to be most tolerant to chilling temperature followed by Rio Grande, whereas two local genotypes namely China and Layyah were noted to be comparatively sensitive among the genotypes under consideration.
Shaheen, M.R., Ayyub, C.M., Hussain, R., Ahmad, Z., Siddique, M.A., Yasin, H.M., Suleman, M. and Mughal, H.A.N. (2019). Evaluation of chilling tolerance potential of tomato (Solanum lycopersicum L.) genotypes under the agro-climatic conditions of Bahawalpur. Acta Hortic. 1257, 151-160
chilling, tomato, antioxidants, yield, genotypes