PJB-2022-338
Role of salicylic acid and plant growth promoting rhizobacteria (PGPR) to enhance cold tolerance in tomato (Lycopersicon esculentum Mill.)
Kokab Nazim and Asghari Bano
Abstract
Better crop productivity is essential to alleviate hidden hunger but due to biotic and abiotic constraints, it is however compromised. During the last decade, revolution in off-season vegetable farming has prompted plant biologists to develop advance lines that can cope adverse biotic and abiotic stress and or probe out advance ecofriendly techniques. This study was aimed to investigate the effects of salicylic acid alone or in combination with PGPR to induce cold tolerance in tomato. Seven treatments along with one control (T0) (untreated) were applied on ten tomato genotypes. Bacillus cereus (ATCC 14579) and Pseudomonas putida (KX574857) were used as plant growth promoting rhizobacteria. Experiment was performed in open field conditions having temperature ranging between 0-10 0C. Different biological parameters were investigated like sugars, proline protein, chlorophyll a,b and carotenoids, flavonoids and ascorbic acid content, superoxide dismutase and catalase activities. Genotypes A17860 and A17876 showed 51% increase in plant height over control in T4 (Salicylic acid) and T6 (Pseudomonas+ Salicylic acid) during 1st year while genotype A19842 showed 59% increase in plant height, 53 % increase in protein content over control in T6 in second year. Genotypes treated with plant growth promoting rhizobacteria and salicylic acid showed better performance compared with control, although genotypic variations have also contributed to acquiring tolerance
To Cite this article:
Kokab Nazim and Asghari Bano. 2024. Role of salicylic acid and plant growth promoting rhizobacteria (PGPR) to enhance cold tolerance in tomato (Lycopersicon esculentum Mill.). Pak. J. Bot., 56(3): DOI: http://dx.doi.org/10.30848/PJB2024-3(28)
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