Ampelographic and phenotypic bases of improvement of some grape varieties
European Journal of Molecular & Clinical Medicine,
2022, Volume 9, Issue 7, Pages 7954-7975
AbstractDuring the research, the prospects of a number of local and introduced seedless grape varieties were evaluated on the basis of a "new model", which includes 25 ampelographic indicators of OIV, and morphometric sizes of berries and bunches, including yield indicators, were studied. It was revealed that the grape varieties differ significantly in their ampelodescriptor indicators. The overall assessment of prospects, calculated from the score which was obtained for each descriptor indicator, significantly differed by grade and changed in a wide range from 101.8 (Khyrcha kishmish) to 162.5 (Sultany kishmish) points. It was determined that 1 variety is unpromising, 3 varieties are quite promising, 14 varieties are extremely promising in comparison with the control.
Researches have shown that the studied grape varieties also differ significantly in the yield of the vine. So, this indicator ranged from 5.3 (Khyrcha kishmish) to 12.8 kg (Attica). Mathematical and statistical analysis of the significance level of the average yield of the studied varieties compared to the control (by U-factor) and the average growth compared to the control (∆ ,%) showed that only three of the local varieties (Ag oval kishmish, Ag kishmish, Gara kishmish), and six of the introduced varieties (Attica, Superior, Autumn Royal, Danuta, Centennial seedless, Sultanina) have significant reliability compared to the control variety Asgeri. Compared with the control, the average growth of the varieties of Kishmish Sogdiana, Kishmish Zarafshan, Sary kishmish, Khyrcha kishmish, Gyrmyzy kishmish was zero or negative (0 and -29.4%), while other varieties (Ag oval kishmish, Gara kishmish, Chahrayi kishmish, Attica, Superior, Danuta, etc.) had a significant positive growth (5.6-88.2%).
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