DEVELOPMENT OF EARLY-RIPENING WHITE CABBAGE VARIETIES IN THE SOUTH OF RUSSIA
Early-ripening white cabbage has a special place among the vegetables cultivated in the Kuban region. It opens the pipeline of vegetables from the open ground and is supplied to other regions at a time when shortage of vegetables of domestic production is felt the most. Modern producer requirements to domestic hybrids are the highest - product quality, uniformity and productivity should not concede to foreign analogues. Ways to improve the quality of early ripening hybrids: development of lines based on modern foreign hybrids, high uniformity of lines by morphological and economic traits. Development of male sterile lines and dihaploid lines in culturein vitro can more successfully solve the problem of quality of early ripening hybrids. The use of the above methods and approaches helped develop series of inbred lines - gene sources for complex agronomic traits. On the vase of obtained lines promising early-ripening hybrids were developed. One of the hybrids, Ritsa F1, entered the State register of breeding achievements. Advantages of the hybrid: earliness, uniformity and high marketability of heads, high productivity. According to results of contest trial new hybrid Milana F1 is passed for State trial, this hybrid has high productivity potential for growing in sale cropping. Both hybrids were produced with the participation of male sterile line Dt46f, resistant to fusarium. High quality seeds of these hybrids were produced in a greenhouse in direct crop for a wide industrial and environmental testing