A comparative study of grain yield and yield components of wheat (Triticum aestivum L.) in response to waterlogging condition
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2014, Vol 5, Issue 3
Abstract
Waterlogging condition is an important abiotic stress that suffers in many parts of global area in each year. For evaluation and comparison of yield and yield components under waterlogging condition a pot experiment was conducted during 2012-2013 crop season. Experimental design was a factorial according to a randomized complete block design (RCBD) with three replications. Treatments were four levels of waterlogging duration include: no waterlogging (control), 7, 14 and 21 days and four height of water above the soil surface namely: 0, 5, 10 and 15 cm. Results showed that increasing of waterlogging duration decreased leaf area index (LAI), chlorophyll a, chlorophyll b, grain yield and all yield components such as 1000-kernel weight, spike per square meter and spikelet per spike, significantly. Average reduction in grain yield for 7, 14 and 21 days waterlogging were 33.2, 47.7 and 68.1% as compared to no waterlogging, respectively. Height of water above the soil surface decreased LAI, chlorophyll a, chlorophyll b, grain yield and all yield components, but it were not significant except chlorophyll a, 1000-kernel weight, spikelet per spike and grain yield. Average reduction in grain yield for 0, 5, 10 and 15 cm waterlogging were 22.2%, 34.8, 42.0 and 50%, as compared to no waterloggin.
Authors and Affiliations
Seyed Keyvan Marashi
Keywords
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