Phenological observations on Syrah red wine variety clones

Popova, Anelia; Angelov, L.

doi:10.22620/agrisci.2022.35.004

Cited by 2 publications

(5 citation statements)

References 13 publications

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“…Thus, by the end of May, the shoots had an increase of 130 -150 cm. During flowering, when the optimal temperature reaches 28-30ºС (Popova, 2023), the most intensive growth is observed, and on average for the period of one week, we have an increase around and above 40 cm. In the case of the non-reduced variants (V1, V2, V3, and V4), from the end of June to the middle of July, a smooth growth stoppage began (Figure 2).…”

Section: Resultsmentioning

confidence: 84%

“…The shoot grows in length mainly due to the intercalary growth of the upper 6-8 internodes. The growth strength of the shoots depends on the biological characteristics of the variety (clone), as well as on the substrate on which the vines are grafted (Popova, 2023).…”

Section: Resultsmentioning

confidence: 99%

“…The clonal selection is an important tool for genetic improvement in viticulture and production of high quality vines (Popova, 2023). The diversification of the vineyard collection is achieved on the basis of clone selection with high levels of realization of the biological potential, economic productivity and quality indicators of grapes and wine (Meneghetti et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Vines vary spatially with respect to soil and nutrition, vegetative growth, yield and fruit composition (Popova, 2023). Summer pruning or green pruning covers any manual or mechanical operation carried out in the vines when even a minimal sign of vegetative growth is visible in the crown (Poni et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

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Bunch thinning and its influence on the shoots growth dynamics in some syrah wine variety clones

Popova,

Angelov

2024

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During the period 2020-2022, an experiment was conducted in the experimental vineyard of the Agricultural University – Plovdiv, and four clones of the wine variety Syrah, numbered 100, 174, 470 and 524, grafted on the SO4 rootstock were selected as the study object. During the „pea size“ phase, the green pruning operation – bunch thinning was applied. The shoots growth starts from the vegetation phase „first leaf appearance“ and ends at the „veraison“. The average duration is about 100 days, covering the period of May, June and July. It was found that the vine shoots from a clone 470 reached the greatest average length, V3 – 285, 265, 290 cm and V7 – 359, 336, and 380 cm, and those from a clone 100 were distinguished by the weakest growth, V1 – 197, 203 and 205 cm and V5 – 240, 228 and 245 cm. Differences were proven between the variants, both in the non-reduced (V1, V2, V3, and V4) and in those with reduced yields (V5, V6, V7, and V8), as after reducing the number of bunches, the length of the shoots was longer – high in all vines from the used Syrah clones. This study provides information on the relationship between the applied green pruning operation (bunch thinning) during the growing season and its effects on the vegetative growth. Balancing the vines bud load by controlling yield during the growing season is a preferred viticultural practice for increasing the grape quality. Keywords: Clones, Syrah, green pruning, bunch thinning, shoot growth

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bunch thinning and its influence on the shoots growth dynamics in some syrah wine variety clones

Popova,

Angelov

2024

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“…During the study period, an average monthly air temperature of 14ºС was measured, the active temperature sum was 2067ºС, and the amount of precipitation was 633.40mm (Popova, 2023). The summer periods were characterized by prolonged droughts combined with low atmospheric humidity.…”

Section: Resultsmentioning

confidence: 99%

Effect of the grape thinning on the content of trans-resveratrol in some Syrah clones

Popova,

Angelov

2023

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Wine is a product obtained through fermentation process, the trans-resveratrol is a polyphenol derived from grapes and a natural antioxidant that passes into wine. The trans-resveratrol is a rare compound with the highest content in the red wine and a positive physiological effect on human organism. The present study was conducted in three years period from 2020 until 2022 at the Agricultural university-Plovdiv experimental vineyard, located near the village of Brestnik. Four Syrah wine variety clones were included and eight experimental wines have been made during the experimental period. In all tested wines, the presence of trans-resveratrol was detected but its amount was higher in clone 524 (V4) with non-reduced yield (3.35, 4.36, 7.02 mg/L), and in clone 100 (V5) with reduced yield (5.24, 3.75, 7.23 mg/L). Reducing the bunch numbers at the “pea size” stage did not significantly influence the content of trans-resveratrol. The wine antioxidant properties were directly affected by the clone and the grape harvest and was under the terroir influence. In today's conditions of overproduction and increased competition, the results of this study provide a valuable economic information and expand the portfolio of wineries. Keywords: clones, Syrah, red wine, resveratrol, bunch thinning, canopy management

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Phenological observations on Syrah red wine variety clones

Cited by 2 publications

References 13 publications

Bunch thinning and its influence on the shoots growth dynamics in some syrah wine variety clones

Bunch thinning and its influence on the shoots growth dynamics in some syrah wine variety clones

Effect of the grape thinning on the content of trans-resveratrol in some Syrah clones

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