Photosynthetica, 2018 (vol. 56), issue 4

Photosynthetica 2018, 56(4):1224-1234 | DOI: 10.1007/s11099-018-0825-5

Comparative photosynthetic attributes of emmer and modern wheats in response to water and nitrogen supply

M. Vaghar1, P. Ehsanzadeh1,*
1 Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, Iran

A field study was conducted with the aim to elucidate photosynthetic responses of five emmer hulled wheat (Triticum turgidum ssp. dicoccum) accessions to 30 (N-limited) and 100 kg(N) ha-1 (N-sufficient) conditions at control and drought stress (irrigation after 30-40% and 60-70% depletion of available soil water, respectively). Chlorophyll (Chl) a and Chl b concentrations of the emmer wheats remained unchanged but net photosynthetic rate and dry mass increased and decreased, respectively, when received a sufficient amount of N. Smaller drought-induced decreases in Chl concentration, membrane stability index, and dry mass were concomitant to a greater decrease in intercellular CO2 concentration of emmer compared to the durum (Triticum turgidum) and bread wheats (Triticum aestivum). The lack of negative effect of insufficient N on Chl concentration and dry mass of emmer wheat suggests that this type of wheat possesses an obvious potential for organic farming.

Keywords: chlorophyll; fertilizer; hulled wheat; irrigation; water-use efficiency

Received: July 1, 2017; Accepted: September 27, 2017; Prepublished online: December 1, 2018; Published: November 1, 2018Show citation

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Vaghar, M., & Ehsanzadeh, P. (2018). Comparative photosynthetic attributes of emmer and modern wheats in response to water and nitrogen supply. Photosynthetica, 56(4), 1224-1234. doi: 10.1007/s11099-018-0825-5.
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