INFLUENCE OF AQUEOUS BARLEY SPROUTS EXTRACT, TREHALOSE, AND CALCIUM ON CARROT FLORAL BIOLOGY

This research was implemented at vegetable field of the College of Agricultural Engineering Sciences - University of Baghdad during spring season 2019. The experiment was conducted using factorial within Randomized Complete Block Design arrangement with three factors and replicates (3X3X2). The aqueous barley sprouts extract (B0, B1) (0, 100 g.L-1) represented the first factor. Trehalose (T0, T1, T2) (0, 50, 75 mmole.L-1) represented the second factor. Calcium (C0, C1, C2) (0, 1, 2 ml.L-1) represented the third factor. The research objectives are assessing the impact of the mentioned factors and their interaction on carrot floral biology traits. Results showed the effectiveness of three ways interaction treatment B1T2C1 in producing significant increases in umbel diameter (17.33, 11, 7.934 cm) and setting percentage (100, 100, 87.67%) for the first, second, third umbels respectively. While B1T2C2 produced the highest number of umbellet.umbel-1 (193, 123, 111.6) for the first, second, third umbels respectively. And the highest number of flowers. umbellet -1 for the first, second, third umbels found in B0T1C0 (167.3, 113, 48.67)