AGE-RELATED CHRONOGRAPHIC VARIABILITY OF FRUITING INDICATORS OF SIBERIAN CEDAR CLONES
On the clone test plantation of Siberian cedar plus trees in the lowlands of North-Eastern Altai, the zone of the ecological optimum of the species, in 20-30-year-old ramets for 10 productive years, the clonal specificity of the chronographic variability of the number of fruiting shoots, the number of cones and the size of the yield was established ... In different clones, it varies at the medium-high (C = 18-25 %), high (C = 34-40 %) and very high (C = 42-56 %) levels. The variability of the fruiting energy (the number of cones per shoot) is character-specific. In all clones, it remains at a low-medium level (C = 10-18 %), which indicates its high genetic condition. The number of fruiting shoots is closely related to the yield and the number of cones (r = 0.78-0.99). With the same number in all clones, different age-related intraclonal variability (C = 18-44 %) indirectly reflects the year-on-year unevenness of the yield, the specificity of selfregulation and the reproductive capacity of the regenerative capacity of organisms. The fruiting energy and the number of fruiting shoots in general are weakly conjugated characters of the clone: r = 0.38-0.69. At the same time, very high yields are formed at their maximum values, low - at minimum, the rest - with a different combination. It highly correlates with the harvest (r = 0.70-0.91), but decreases as it decreases: from 3.1 in high-yielding years to 1.0 in lowyielding years. It can serve as a reliable phenotypic indicator for a short-term forecast of the expected yield. The number of cones and the value of the seed yield are closely related (r = 0.91-1.0). Their intraclonal chronographic variability is increased - very high (C = 24-54%). The high amplitude of their variation in clones of different yields under the same conditions of growth and pollination is associated with predominantly individual hereditary rather than paratypical conditioning.