PJB-2021-407
Allometric deviation in biomass and biochemicals of sunflower (Helianthus annuus) plants amplified by lemongrass (Cymbopogon citratus) foliar extract
Muhammad Asad, Afsheen Khan, Saira Qadir and Bushreen Jahan
Abstract
Growth of crops is recently studied in terms of allometry that explains the growth attainment pattern of plant components. Current study describes the effect of lemongrass foliar extract on sunflower plants and the investigations focus the intense response of sunflower vegetative parts. For this purpose, biomass along with major metabolites i.e. carbohydrates, proteins and chlorophyll (a and b) contents have been extracted and evaluated. In this study, different concentrations of lemongrass applied to sunflower plants that showed 1% concentration to be the best adapted application for growth promotion in treated plants. Highest fresh weight, Average Growth Rate and Relative Growth Rate (12.1±0.4 mg, 1.9±0.09 mg/week and 0.9±0.04 mg/week respectively) attained by 1% samples. Among leaves, shoots and roots, leaves showed highest adaptive capability by synthesizing greater amount of chlorophyll a and carbohydrates in 1% treated plants. Whilst control samples showed higher activity in producing greater amount of carbohydrates (1.04±0.3 mg/ml) in roots. In shoots, carbohydrates (3.02±1.0 mg/ml) and proteins (2.04±0.2 mg/ml) were also found in greater amount in 1% samples. Two-way ANOVA produced a highly significant (p<0.001) relationship among metabolites of leaves, roots and shoots. Overall, the study produced comprehensive outcomes hence supports the utilization of natural bio-stimulants for crop growth
To Cite this article:
Asad, M., A. Khan, S. Qadir and B. Jahan. 2023. Allometric deviation in biomass and biochemicals of sunflower (Helianthus annuus) plants amplified by lemongrass (Cymbopogon citratus) foliar extract. Pak. J. Bot., 55(1): DOI: http://dx.doi.org/10.30848/PJB2023-1(18)
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