INTRASPECIFIC CROSSING OF PINE-TREE USUAL NORTHWARD KAZAKHSTAN

Abstract

The results of intraspecific recurrent crosses of pine-tree are presented. Pairs are neat for crossing, the schemes of crossing are made. The insulation of megastrobels was carried out, it was introduced into the insulators of the pollen of testers. The preservation of ovaries (winter crops) was recorded and the quality of the crop was determined from controlled and free pollination. The best variants of returnable controlled crosses were revealed – 53 × 1 × 53 and 74 × 30 × 30, in which the average number of full-grain seeds in one cone exceeded 1.3-3.2 times the control. The seed yield in the variant 53 × 1 × 53 was 2.5 times higher than the control. The high yield of seedlings (from 50 to 100%) from the sowed seeds was obtained in 4 variants of crossing. Two hybrid families, 71 × 1 × 71 and 72 × 1 × 72, were selected, in which the average height of annual seedlings exceeded the average height of half siblings by 3-32%.