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Amelioration of detrimental effects of waterlogging by foliar nutrient sprays in barley

Citation

Pang, J and Ross, JJ and Zhou, M and Mendham, NJ and Shabala, SN, Amelioration of detrimental effects of waterlogging by foliar nutrient sprays in barley, Functional Plant Biology, 34, (3) pp. 221-227. ISSN 1445-4408 (2007) [Refereed Article]

DOI: doi:10.1071/P06158

Abstract

Six barley (Hordeum vulgare L.) cultivars contrasting in their waterlogging tolerance were subjected to waterlogging for 2 weeks under glasshouse conditions. The adverse effects of waterlogging were significantly alleviated by the foliar spray of nutrients (quarter- or full-strength Hoagland solution) in all cultivars. Beneficial effects of nutrient sprays included improved shoot and root growth and reduced leaf senescence. Chlorophyll content was increased, as was net CO 2 assimilation, photochemical efficiency of PSII, and adventitious root production compared with waterlogged plants with no added foliar nutrients. Auxin was found accumulated at the shoot base in waterlogged plants, and the spray of foliar nutrients significantly increased this accumulation in waterlogged plants after 14 days of treatment. Foliar application of 1-NAA also promoted the production of adventitious roots. The highest concentration of auxin was measured in the stem region between 1.2 and 1.6 cm above the shoot?root junction. Foliar nutrient application also improved nitrogen and potassium content in both shoot and root, but calcium content was hardly affected. It is concluded that the improvement of waterlogged plant growth by foliar nutrient sprays could be related to both the improved plant nutrition and increased auxin accumulation in the shoot base, responsible for development of adventitious roots. © CSIRO 2007.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Plant Physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Winter Grains and Oilseeds
Objective Field:Barley
Author:Pang, J (Ms Jiayin Pang)
Author:Ross, JJ (Associate Professor John Ross)
Author:Zhou, M (Associate Professor Meixue Zhou)
Author:Mendham, NJ (Dr Neville Mendham)
Author:Shabala, SN (Professor Sergey Shabala)
ID Code:44109
Year Published:2007
Web of Science® Times Cited:13
Deposited By:Agricultural Science
Deposited On:2007-08-01
Last Modified:2009-08-06
Downloads:0

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