PJB-2022-236
Salicylic acid application improves growth and alleviates the adverse effects of heat stress in pea (Pisum sativum L.)
Imran Habib Khan and Imran Ahmad
Abstract
High temperature is a major factor limiting plant growth and productivity. Salicylic acid (SA) is an important signal molecule that mitigates the adverse effects of heat stress on plants A field experiments entitled “salicylic acid application improves growth and alleviates the adverse effect of heat stress in pea (Pisum sativum L.)” was carried out at The University of Agriculture Peshawar (Amir Mohammad Khan Campus Mardan) in summer 2017. Analysis showed that highest percentage of seedling emergence (73.68 ± SD %), plant height (71.50 ± SD cm), leaves plant-1 (202.31 ± SD), pods plant-1 (37.60 ± SD), seeds pod-1 (7.08 ± SD), 100 seed weight (34.32 ± SD g), yield (5569.48 ± SD kg ha-1), chlorophyll content (50.13 ± SD SPAD), protein content (20.94 ± SD % FW) except total soluble solids (15.27 ± SD 0Brix) were observed in plants which received having both primed seeds and foliar applied SA at 100 ppm. Findings regarding salicylic acid levels revealed that maximum seedling emergence percentage (73.90 %), plant height (71.80 ± SD cm), leaves plant-1 (193.76 ± SD), pods plant-1 (38.70 ± SD), seeds pod-1 (7.58 ± SD), 100 seed weight (37.78 ± SD g), yield (6268.61 ± SD kg ha-1), chlorophyll content (52.03 ± SD SPAD), protein content (21.52 ± SD % FW) except total soluble solids (14.73 ± SD 0Brix) were recorded in plants sprayed with 100 ppm salicylic acid. Interaction between modes of application and 100 ppm salicylic acid was also found significant in most of the studied parameters. So it is concluded that seed priming and again as a foliar application of salicylic acid at 100 ppm improved the physiology of pea and alleviates the heat toxicity in pea plants.
To Cite this article:
Khan, I.H. and I. Ahmad. 2024. Salicylic acid application improves growth and alleviates the adverse effects of heat stress in pea (Pisum sativum L.). Pak. J. Bot., 56(1): DOI: http://dx.doi.org/10.30848/PJB2024-1(4)
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