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Articles by Kowthar Gad Ali El-Rorkiek
Total Records ( 1 ) for Kowthar Gad Ali El-Rorkiek
  Mervat Shamon Sadak , Mohamed El-Sayed El-Awadi , Mona Gergis Dawood and Kowthar Gad Ali El-Rorkiek
  Background and Objective: Cauliflower extract is a source of brassinosteroids. Brassinosteroids are steroidal phytohormones which regulate plant growth, development and plant productivity. Thus, it could be used in improving growth and increasing plant yield under newly reclaimed sandy soil. Materials and Methods: Two field experiments were carried out, during 2 successive winter seasons to compare between the effect of brassinosteroids and 80% ethanolic extract of cauliflower buds on growth, some biochemical parameters, yield quantity and quality of quinoa plant grown under sandy soil conditions. Results: Results showed that brassinosteroids and 80% ethanolic extract of cauliflower significantly increased growth criteria of quinoa plant (plant height, branches and leaves number/plant, fresh and dry weight/plant), photosynthetic pigments (chlorophyll a, b, carotenoid and total photosynthetic pigments), seeds yield/plant, yield attributes (plant height, number of fruiting branches, dry weight of plant and 1000 seeds weight) as well as nutritional value of the yielded seeds (carbohydrate, oil, protein, proline and free amino acids contents as well as N, P, K content), antioxidant compounds (flavonoids and phenolic compound) and antioxidant activity. Conclusion: Cauliflower extract at different concentrations were more effective in increasing plant growth, quality and quantity of the yielded quinoa seeds than brassinosteroids treatments. The results indicated that cauliflower extract at 200 mg L1 was the most pronounced treatment.
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