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Radiation Interception and Radiation Use Efficiency Response to Intraspecific Competition in Barley (Hordeum vulgare) Cultivars

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Abstract

Light extinction coefficient (KPAR) and radiation use efficiency (RUE) may be influenced by environmental and genetic conditions. In order to study the effect of seed density on the trend of changes in KPAR and RUE in barley cultivars, a factorial experiment was done in a randomized complete block design with four replications in the Gonbad Kavous University field during 2016–2017 and 2017–2018 in rainfed conditions, Gonbad Kavous, Iran. The first factor was seed density at four levels (200, 300, 400, and 500 seeds/m2) and the second factor was barley cultivar (Fardan, Khorram, Mahoor, and Sahra). KPAR decreased from 0.63 to 0.47 with increasing seeds per m2. RUE values for the first and the second growing seasons were in the range of 1.73 to 2.35 and 0.84 to 1.22 g/MJ, respectively. The results showed that that environmental conditions and crop management (sowing density) can affect RUE and KPAR.

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Acknowledgements

The authors thank Gonbad Kavous University for their management team.

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This work did not receive any specific funding.

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Correspondence to Ali Rahemi Karizaki.

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M. Saleh Ravan, A. Rahemi Karizaki, A. Biabani, A. Nakhzari Moghaddam, and E. Gholamali Pour Alamdari declare that they have no competing interests.

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The data that support this study will be shared upon reasonable request to the corresponding author.

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Saleh Ravan, M., Rahemi Karizaki, A., Biabani, A. et al. Radiation Interception and Radiation Use Efficiency Response to Intraspecific Competition in Barley (Hordeum vulgare) Cultivars. Gesunde Pflanzen 75, 487–497 (2023). https://doi.org/10.1007/s10343-022-00708-0

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  • DOI: https://doi.org/10.1007/s10343-022-00708-0

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