Changes in some morpho-physiological traits of safflower in response to water deficit and nano-fertilizers

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Research Paper 01/03/2018
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Changes in some morpho-physiological traits of safflower in response to water deficit and nano-fertilizers

Kazem Ghassemi-Golezani, Nafiseh Afkhami
J. Bio. Env. Sci.12( 3), 392-399, March 2018.
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A split plot experiment based on randomized complete block design with three replications was arranged in 2017, to assess the effects of foliar application of nano-fertilizers (SiO2 and Mn2O3) on some morpho-physiological traits of safflower (Carthamus tinctorius L.) under different irrigation intervals (I1, I2, I3 and I4: Irrigation after 70, 100, 130 and 160 mm evaporation from class A pan, respectively). Leaf temperature was increased, but other morpho-physiological traits of safflower were decreased by decreasing water availability, particularly by moderate and severe stresses. Foliar sprays of nano-Mn2O3 and especially nano-SiO2 reduced leaf temperature, while enhanced leaf water content, chlorophyll content index and ground green cover, leading to an increase in plant height, branches per plant and capitols per plant under normal and limited irrigation conditions. These results indicated that foliar sprays of the nano-fertilizers could be a useful method for improving safflower performance under adverse environmental conditions.


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