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RESULTS OF RESEARCH INTO AFFINITY OF PROMISING TABLE GRAPE HYBRID FORMS

Article language

Українська

Print date

18.06.20

Date posted online

21.10.2020

Institution

National Scientific Centre «V.Ye. Tairov Institute of Viticulture and Winemaking» of NAAS

Bibliography

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Section

SOURCES AND DONORS

Abstract

Aim. To study affinity of 12 rootstock-scion combinations of new promising table grape hybrid forms with common and new Ukrainian rootstock varieties.

Results and Discussion. The study results demonstrated differences between rootstock-scion combinations in the number of check seedlings after stratification and differences in survival rates of seedlings after their planting. Analysis of phenological data showed significant differences in “the vegetation period length” and “the sum of active temperatures” for all hybrid forms grafted onto Dobrynia variety. Analysis of data on promising hybrid forms in rootstock-scion combinations allowed us to confirm significant effects of rootstocks on scion varieties, which cover both bio-physiological and economic characteristics of a grafted organism.

Conclusions. Estimated amounts of check grafted seedlings after stratification in all 12 variants of rootstock-scion combinations were quite high (57-92%). Survival rates of seedlings after their planting ranged from 57% to 100%. For traditional wine-growing regions, it is recommended to graft Tairian and Persei hybrid forms onto Dobrynia and Berlandieri x Riparia Kober 5BB rootstocks. Fontan hybrid form should be grafted onto Riparia x Rupestris 101-14 (reference cultivar) and Dobrynia varieties. For experimental, non-traditional regions of viticulture, it should be taken into account that vegetation period of seedlings grafted onto Dobrynia variety tends to increase by three days for Persei and Fontan hybrid forms (2%). The vegetation period of Tairian – Dobrynia rootstock-scion combination exceeded reference combination rates by seven days (5.7%). Studies of the influence of stress factors on traits of interest will be continued.

Keywords

affinity, rootstock-scion combinations, variety, genotype, turgor, vegetation period