MORPHOLOGICAL AND ECONOMICALLY USEFUL CHARACTERS OF NEW POTATOES VARIETIES IN TADZHIKISTAN
It is pointed out that by means of using traditional selection methods (the study of original materials, positive clone selection, crossing, the study of hybrids etc.) and biotechnology one can speed up the process of obtaining new varieties of improved potatoes seeds in the agro-ecologically clean conditions of mountain zones of Tadzhikistan. By combining the methods of selection and biotechnology new varieties of potatoes – Zarina, Dusti, Faizabad,Tadzikistan and Rasht have been obtained. These new varieties are now being studied in different ecological districts of the Republic with the purpose of their further reproduction. During the four years of studies the new potatoes varieties significantly surpassed the standard Kardinal variety at 3.93–9.40 t/ha (12.60–30.18%) on the average.