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Determination of oil content and fatty acids profile in sunflower seeds through near infra-red spectroscopy under various treatments of potassium nitrate, zinc sulphate and gibberellic acid

Research Paper | October 1, 2016

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Amin Ullah Jan, Fazal Hadi

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Int. J. Biosci.9( 4), 22-31, October 2016

DOI: http://dx.doi.org/10.12692/ijb/9.4.22-31


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The effects of potassium nitrate (KNO3), zinc sulphate (ZnSO4) and gibberellic acid (GA3) foliar spray on oil content and fatty acid profile in sunflower varieties were evaluated through Near Infra-Red Spectroscopy (NIRS). Eight varieties of sunflower (Rising Sun, SMH-0907, Ausigold-7, SMH-0939, US-444, Hysun-33, SMH-0917 and HS-K6) were grown in glass house. Different concentration of KNO3 (10 mg/L and 5 mg/L), ZnSO4 (2 mg/L and 1 mg/L) and 100 ppm of gibberellic acid solution were prepared. Four doses of each treatment were applied to the plants and for each dose fresh solutions were prepared. Potassium nitrate and Zinc sulphate significantly increased the oil % and unsaturated fatty acid level in sunflower varieties. In T1 treatment (10 mg/L of KNO3), the highest oil was found in the SMH-0917 (43.35 %), oleic acid (16.50 %) in Rising Sun and linoleic acid in SMH-0939 (77.25 %). In T3 treatment (2 mg/L of ZnSO4) the maximum oil % was noted in SMH-0917 (41.25 %), oleic acid in SMH-0917 (15.40 %) and linoleic acid in Hysun-33 (77.25 %). Gibberellic acid foliar application (100 ppm of GA3) significantly enhanced the oil content. The maximum oil % was observed in Hysun-33 (36.00 %), oleic acid in Rising Sun (14.30 %) and linoleic acid (75.60 %) in SMH-0917.  Conclusively, oil content and unsaturated fatty acid could be increased by the application of K, Zn and GA3 in sunflower.


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Determination of oil content and fatty acids profile in sunflower seeds through near infra-red spectroscopy under various treatments of potassium nitrate, zinc sulphate and gibberellic acid

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