Improvement of Physical and Chemical Properties of Thompson Seedless Grapes (H4 Strain) by Application of Brassinolide and Gibberellic Acid

Belal, B. E. A.

doi:10.21608/ejoh.2019.16758.1116

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…The results obtained in T2 and T8 align with the findings of Belal et al [3], who observed that leaving a higher number of canes per vine resulted in greater cluster length, berry width, berry length, and berry diameter compared to a lower number of shoots. No significant differences were observed between the two conditions.…”

Section: Discussionsupporting

confidence: 89%

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The Impact of Bud Load on Berry Quality, Yield, and Cluster Compactness in H4 Strain Grapevines

Al-Saif,

Fahmy,

Baghdady

et al. 2023

Agronomy

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The Thompson Seedless (Sultanina) seedless variety of grapes is an important crop in Egypt, both for local consumption and export. In recent years, the H4 strain of this grape variety has gained popularity due to its high productivity. However, a drawback of this strain is that the grape clusters become densely packed, resulting in small berries and reduced overall quality. A study was conducted to investigate the impact of pruning severity and bud load on the growth, yield, and quality of H4 grapes. The study included several different treatments, namely T1 Control: (10 canes × 12 buds), T2: (8 canes × 6 buds), T3: (8 canes × 8 buds), T4: (8 canes × 10 buds), T5: (8 canes × 12 buds), T6: (6 canes × 13 buds), T7: (8 canes × 13 buds), T8: (10 canes × 13 buds), and T9: (12 canes × 13 buds). The behavior of the buds, vegetative growth, yield, and quality of the grapes were analyzed. The results showed that pruning of the H4 strain with either 8 canes and 10–12 buds per cane, or 6 canes with 13 buds, produced the best results in terms of managing excessive fruit production, achieving a balance between vegetative growth and yield, and improving the physical and chemical characteristics of the grape clusters and berries. Overall, maintaining 8 canes with 10–12 buds per cane or 6 canes with 13 buds is recommended for obtaining maximum crop yield and quality.

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Section: Discussionsupporting

confidence: 89%

“…It has quickly become one of the most popular grape varieties in the world, due to its high yield and large clusters [2]. However, this strain produces clusters with high compactness and small berries, thus negatively affecting the cluster's quality during marketing [3].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Bud Load on Berry Quality, Yield, and Cluster Compactness in H4 Strain Grapevines

Al-Saif,

Fahmy,

Baghdady

et al. 2023

Agronomy

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“…Physical and chemical analysis of bunches and berries: samples of four bunches per vine were taken at harvest time for the following measurements: Average bunch weight (g) and the number of berries per bunch. While the coefficient of bunch compactness was calculated by dividing the number of bunch berries by bunch length (Belal, 2019), as well as average berry weight (g) and berry size (mm) were also estimated.…”

Section: Methodsmentioning

confidence: 99%

Improving Yield and Bunches Quality of Sultana ‘H4 strain’ Grapevines

Elatafi

Doaa

Samra

2022

Journal of Plant Production

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This study was carried out during the seasons of 2021-2022 to study the effect of GA3 plus urea each alone or with trunk girdling and bunches tipping on yield and bunch quality of Sultana 'H4 strain' grapevines. The data reveal that spraying vines with GA3 plus urea at the beginning of (15-20%) flowering significantly reduced the number of berries per bunch and the compactness coefficient of the bunch than the control. Furthermore, sprayed vines with GA3 plus urea with both trunk girdling and bunches tipping significantly produced a higher bunch weight, berry weight, and size. Despite this, treated bunches with GA3 plus urea gave no clear effect of SSC/acid ratio in berry juice than the control but increased the values of total chlorophyll a and b content in berry skin. Whereas, when girdling the trunk and tipping the bunch produced a higher SSC/acid ratio in berry juice and total carotenoid content in berry skin than the control.

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“…Thompson seedless grapevine is the most imperative table grapevine cultivar in Egypt, particularly in the Delta region for local consumption and exportation. Recently, H4 is a promising strain of Thompson seedless grapevine introduced to Egypt in 2012, which has been cultivated extensively owing to its high vigor and fertility, superior yield and high cluster weight [4]. Yet, a huge acreage is situated at the newly reclaimed soils that have several troubles such as salinity.…”

Section: Introductionmentioning

confidence: 99%

Morpho-Physiological and Anatomical Alterations of Salt-Affected Thompson Seedless Grapevine (Vitis vinifera L.) to Brassinolide Spraying

et al. 2022

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Salinity is one of the most critical crises worldwide that ultimately compromises future food security. Brassinosteroids including brassinolide (BL) are a class of polyhydroxy steroids phytohormones, that play a crucial role in several plant metabolic pathways and boost plants’ stress tolerance, but less data is accessible on its function in salt-affected grapevine. The experiment was conducted throughout the 2019 and 2020 experimental seasons at EL-Baramon experimental farm, Horticulture Research Institute, Mansoura, Egypt, to recognize the remediation potential of BL (1 and 2 mg L−1) in lightening salinity (NaCl at 1000, 2000, and 3000 mg L−1) injury on Thompson seedless grapevine seedlings (H4 strain) growth and physio-anatomical attributes. Data advocated that while salinity reduced growth attributes, BL applications substantially improved the overall salt-affected plant performance. Salinity stress significantly decreased photosynthetic pigment, relative water content, and ions percentage (nitrogen, phosphorus, potassium, potassium/sodium ratio). Alternatively, BL spraying significantly (p ≤ 0.05) increased the photosynthetic pigment, maintaining a favorable potassium/sodium ratio and increasing the ions percentage. Additionally, increasing salinity levels significantly boost plant sodium percentage and induce a membrane malfunction associated with increased membrane permeability; conversely, the application of BL decreased the sodium percentage associated with decreasing membrane permeability relative to non-treated salinized plants. Moreover, salinity and/or BL significantly improved the antioxidant capacity associated with rising proline accumulation and antioxidant enzyme activities. Anatomically, salinity stress considerably modified leaf structure; meanwhile, the spraying with BL drastically mitigates the harmful effects of salinity on leaf anatomy. Additionally, salt-affected plant cells explained various obvious organelles ultrastructural modifications and cellular damage; meanwhile, BL spraying to salt-affected plants repealed the ultrastructural modifications of cell organelles. Taken together, BL, especially 2 mg L−1, has a great potential to boost the salt tolerance of Thompson seedless grapevine seedlings (H4 strain). It improves salt tolerance by sustaining higher photosynthetic pigment concentrations, maintaining ion homeostasis, regulating water status, and stimulating antioxidant capacity as well as maintaining leaf anatomical attributes.

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Improvement of Physical and Chemical Properties of Thompson Seedless Grapes (H4 Strain) by Application of Brassinolide and Gibberellic Acid

Cited by 5 publications

References 11 publications

The Impact of Bud Load on Berry Quality, Yield, and Cluster Compactness in H4 Strain Grapevines

The Impact of Bud Load on Berry Quality, Yield, and Cluster Compactness in H4 Strain Grapevines

Improving Yield and Bunches Quality of Sultana ‘H4 strain’ Grapevines

Morpho-Physiological and Anatomical Alterations of Salt-Affected Thompson Seedless Grapevine (Vitis vinifera L.) to Brassinolide Spraying

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