Investigation of the effect of plant density and supplementary irrigation on response of photosynthetic pigments and catalase and ascorbate peroxidase and forage yield of two safflower cultivars (Carthamus tinctorius L. )

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Delfani Maryam; HATAMI ALI; POURDAD SEYYED SAEID; TAHMASEBI ZAHRA; FATTAHNIA FARSHID; JAHANSOOZ MOHAMAD REZA

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Journal: JOURNAL OF PLANT PROCESS AND FUNCTION Year:2019 | Volume:8 | Issue:32 Page(s): 137-156

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Title

Investigation of the effect of plant density and supplementary irrigation on response of photosynthetic pigments and catalase and ascorbate peroxidase and forage yield of two safflower cultivars (Carthamus tinctorius L. )

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Keywords

Ascorbate PeroxidaseQ2

CatalaseQ1

ChlorophyllQ1

SafflowerQ2

Abstract

Due to the high resistance of Safflower to environmental severe conditions, many researchers use this plant as a model to explore and understand its defense mechanisms against environmental stresses. In this regard, an experiment was carried out to investigate the response of photosynthetic pigments and Catalase and Ascorbate Peroxidase to forage plant density of two Safflower cultivars under supplemental irrigation conditions at the research farm of Faculty of Agriculture, Ilam University, during academic year 2016-2017. The experiment was conducted in a split-factorial design. The main factor was irrigation at two levels (supplementary irrigation and dry-land) and sub – factors included the mixture treatments of density levels (20, 30, 40, 50 and 60 kg/ha) and cultivars (Goldasht and Faraman), which were performed in three replications. The results of evaluation of these traits showed that the highest total Chlorophyll content, a and b, occurred in supplementary irrigation treatment with an average of 12. 12, 9. 44 and 2. 56 μ g/ml respectively, and carotenoid content was not affected by any of the treatments. The main treatment of density 40 (kg/ha) with an average of 89. 89 μ mol/gFw caused the highest amount of anthocyanin. Also, the main treatment of Faraman cultivar (37. 21 μ mol/gfw) had better performance in terms of anthocyanin than did Goldasht (35. 24 μ mol / gFw). The highest amount of flavonoids was obtained from the 50 (kg/ ha) density with an average of 5% /08. Catalase enzyme was more effective in dry-land treatment (0. 005%). In addition, the densities of 50 and 60 (kg/ha) with an average of 0. 005 and 0. 07%, respectively, achieved superiority in both antioxidants Catalase and Ascorbate Peroxidase. The highest amount of dry forage yield was observed in the main treatments of supplementary irrigation (30. 2 kg/ha) and mixture treatments of density 60 (kg ha-1) × Faraman cultivar (34. 2 kg ha-1). Finally, supplementary irrigation treatment increased the photosynthetic pigments and increasing planting density was so effective in increasing the activity of both enzyme and non-enzyme antioxidants that improved the adaptability and drought resistance and enhanced performance (yield) in semi-arid regions (the area where the experiment was conducted).

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APA: Copy

Delfani, Maryam, HATAMI, ALI, POURDAD, SEYYED SAEID, TAHMASEBI, ZAHRA, FATTAHNIA, FARSHID, & JAHANSOOZ, MOHAMAD REZA. (2019). Investigation of the effect of plant density and supplementary irrigation on response of photosynthetic pigments and catalase and ascorbate peroxidase and forage yield of two safflower cultivars (Carthamus tinctorius L. ). JOURNAL OF PLANT PROCESS AND FUNCTION, 8(32 ), 137-156. SID. https://sid.ir/paper/367729/en

Vancouver: Copy

Delfani Maryam, HATAMI ALI, POURDAD SEYYED SAEID, TAHMASEBI ZAHRA, FATTAHNIA FARSHID, JAHANSOOZ MOHAMAD REZA. Investigation of the effect of plant density and supplementary irrigation on response of photosynthetic pigments and catalase and ascorbate peroxidase and forage yield of two safflower cultivars (Carthamus tinctorius L. ). JOURNAL OF PLANT PROCESS AND FUNCTION[Internet]. 2019;8(32 ):137-156. Available from: https://sid.ir/paper/367729/en

IEEE: Copy

Maryam Delfani, ALI HATAMI, SEYYED SAEID POURDAD, ZAHRA TAHMASEBI, FARSHID FATTAHNIA, and MOHAMAD REZA JAHANSOOZ, “Investigation of the effect of plant density and supplementary irrigation on response of photosynthetic pigments and catalase and ascorbate peroxidase and forage yield of two safflower cultivars (Carthamus tinctorius L. ),” JOURNAL OF PLANT PROCESS AND FUNCTION, vol. 8, no. 32 , pp. 137–156, 2019, [Online]. Available: https://sid.ir/paper/367729/en

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