Adaptability of biochemical parameters of carrot (Daucus carota L.) of VNIISSOK’s breeding and estimation of background in Moscow region

Intervarietal and ecological variability of biochemical parameters of six varieties and hybrids of Daucus carota L. of VNIISSOK’s breeding was studied. These data can be used for breeding of carrot for consistent high quality of product.The sources of high potential of such traits as the “total carotenoid content” (Moscowskay Zimnya A-515, Nantskya 4, Minor), the “total sugars” (Marlinka, Mars F1), the “content monosaccharides” (Gribovchanin F1) were identified. The sources of stability of biochemical parameters were identified. They are cv. Nantskya 4 and Minor (for the trait of the “total carotenoids”), cv. Marlinka and Moscowskay Zimnya A-515 (for the trait of the “total sugars), and hybrid Gribovchanin F1 (for the trait of the “total monosaccharides”). The environment of Moscow and Bryansk regions was used as a background for selection for adaptability of such traits as “total sugar content”, “total carotenoids”, and “nitrate content”. Along with the ecologo-geographic method, the step-type sowing method can be used. The most informative factor for evaluation of traits adaptability is a quality crop production developed at the first sowing time (6th May, 1st May, 5th May) and the second sowing time (16th May, 10th May, 15th May). Demonstration of stability of main biochemical parameters of carrot varieties and hybrids was determined. The possibility of screening of adaptable genotypes for traits of product quality, which depend on sowing time, was shown.