Advances in Biology & Earth Sciences

This paper highlights results of comprehensive study of high-yielding clonal forms (27/11, 30/03, 3-22/4, 4-5/28, 4-18/17, 3-2/12, 5/2-14, 9/2-14, 6/1-02 and No. 18/1-02) based on morphological, biological and economic-technological features, as well as the main provisions of clone selection and vegetative changes occurring in grapevines. In addition, the article reflects the results and analyzes of mathematical-statistical studies (U, х2 and Student-t criterion) conducted to check the degree of honesty of the difference between grape varieties and their clones according to certain indicators. Based on the grouping of yield, only one form (Cehrayi kishmish cultivar) had low yield, while other cultivars and clone forms had medium (Ag oval kishmish, Ag kishmish, Gara kishmish, Sultani kishmish, clone 3-2/12), high (clones 30/03, 4-18/17, 3-22/14) and very high (5/2-14, 9/2-14, 6/1-02, 18/1-02, 27/11, 4-5/28 clones) yield. It has been determined that clonal variations have higher yield than their parents.