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Growth improvement in spring maize through exogenous application of ascorbic acid, salicylic acid and hydrogen peroxide.

Author(s)
Ijaz Ahmad Department of Crop Physiology, University of Agriculture, Faisalabad, Pakistan
Shahzad M. A. Basra Department of Crop Physiology, University of Agriculture, Faisalabad, Pakistan
Irfan Afzal Department of Crop Physiology, University of Agriculture, Faisalabad, Pakistan
M. Farooq Department of Agronomy, University of Agriculture, Faisalabad, Pakistan
Abdul-Wahid Department of Botany, University of Agriculture, Faisalabad, Pakistan
Abstract
Early plantation of spring maize crop is practiced to avoid heat stress during seed set but low temperature causes poor and erratic stand establishment. Foliar application of antioxidants, plant growth regulators and osmoprotectant can improve early seedling growth. Foliar spray of ascorbic acid (AsA), salicylic acid (SA) and hydrogen peroxide (H2O2) @ 20 and 40 mg L-1 was applied on spring maize seedlings at 3rd leaf stage. Foliar application improved shoot and root lengths, which was associated with higher superoxide dismutase (SOD), chlorophyll and nutrients contents. A positive correlation was observed between shoot length and shoot N, P and K contents, leaf SOD and chlorophyll contents, while root length was positively correlated with root N, P and K contents. It is concluded that early seedling establishment can be improved by exogenous application of AsA, SA and H2O2 owing to enhanced antioxidants defense system and nutrient homeostasis.
Publication Details
Page(s) 95-100
DOI DOI not available
Published Journal: International Journal of Agriculture and Biology, Volume: 15, Issue: 1, Year: 2013

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