The effects of aminoethoxyvinylglycine and foliar zinc treatments on pre-harvest drops and fruit quality attributes of Jersey Mac apples

Ağlar, Erdal; Yıldız, Kenan; Özkan, Yakup; Öztürk, Burhan; Erdem, Halil

doi:10.1016/j.scienta.2016.10.026

Cited by 14 publications

(17 citation statements)

References 29 publications

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“…Zinc applications also induced phenolic compounds accumulation and antioxidant potential in apple ( Figures 9A , 10A,B ). This result partially conflicts with those of Aglar et al (2016) which described a negative effect of the application of zinc on both phenols and antioxidant potential in apple. Studies on the role of zinc on the apple phenolic metabolism are currently not available in the literature.…”

Section: Discussioncontrasting

confidence: 96%

“…Studies on the role of zinc on the apple phenolic metabolism are currently not available in the literature. An interpretation of this conflicting result could consider the different product formulation used in the present study (a mix of zinc and amino acids), whereas it was zinc sulfate alone in the case of Aglar et al (2016) . Moreover, differences in the cultivars studied and in the experimental conditions could also have played a role on the outcomes of the experiments.…”

Section: Discussionmentioning

confidence: 88%

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Use of Biostimulants for Organic Apple Production: Effects on Tree Growth, Yield, and Fruit Quality at Harvest and During Storage

et al. 2018

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The experiment was conducted during two consecutive seasons (years 2016 and 2017) in an organic apple orchard of the cultivar Jonathan. Several biostimulants were tested (10 in total), including humic acids, macro and micro seaweed extracts, alfalfa protein hydrolysate, amino acids alone or in combination with zinc, B-group vitamins, chitosan and a commercial product containing silicon. Treatments were performed at weekly intervals, starting from the end of May until mid-August. The macroseaweed extract was effective in stimulate tree growth potential in both years, as shown by a significantly larger leaf area (+20% as compared to control) and by an higher chlorophyll content and leaf photosynthetic rate in year 2016. As for the yield performances and apples quality traits at harvest (average fruit weight, soluble solids content, titratable acidity, and flesh firmness), they were generally affected by the different climatic conditions that characterized the two growing seasons (year 2017 being characterized by higher maximal and average temperatures and by limited rainfalls at the beginning of the season). Treatments with macroseaweed extract, B-group vitamins and alfalfa protein hydrolysate were able to significantly improve the intensity and extension of the red coloration of apples at harvest. Correspondingly, the anthocyanin content in the skin of apples treated with the same biostimulants resulted significantly higher than control, highlighting the potential influence of these substances on the synthesis of secondary metabolites in apple. The incidence of physiological disorders was also monitored during apple storage period. Amino acids plus zinc application was effective in reducing (more than 50%) the incidence of the “Jonathan spot,” the main post-harvest disorder for this cultivar.

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Section: Discussioncontrasting

confidence: 96%

Section: Discussionmentioning

confidence: 88%

Use of Biostimulants for Organic Apple Production: Effects on Tree Growth, Yield, and Fruit Quality at Harvest and During Storage

et al. 2018

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“…Zn was reported to play a significant role in auxin metabolism (Kramer and Clemens 2006). Different results were reported by previous researchers about the effects of AVG on leaves Zn content (Aglar et al 2016;Çetinbaş 2018). As illustrated in Figure 2d and Figure 2e, Mn and B contents of the leaves increased in the full bloom stage.…”

Section: Resultsmentioning

confidence: 77%

“…Iron content had the highest value in the control treatment (Figure 2a). Aglar et al (2016) mentioned that AVG treatments increased leaf Mn and K contents, decreased Fe and N contents and did not result in significant changes in the other nutrients. Also, Çetinbaş (2018) stated that AVG plant growth regulator is thought to have both increasing and decreasing effects on the mineral element contents in the fruits and leaves of Akça pear.…”

Section: Resultsmentioning

confidence: 99%

The effect of Aminoethoxyvinylglycine (AVG) applications on mineral contents of grape leaves

Babalik

2020

Mediterranean Agricultural Sciences

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Plant growth regulators may have different physiological effects depending on the application stage and concentration when applied externally. In this study, it was aimed to determine the effects of pre-harvest aminoethoxyvinylglycine applications on the mineral contents of Vitis vinifera L. cv. Alphonse Lavallée leaves. AVG was applied to vines at five different concentrations (0, 250, 500, 750 and 1000 mg L-1) and two application stages (at full bloom and fruit set). As a result, the effects on macro elements content of the grapevine of AVG applications were significant except P. In terms of microelement contents, generally, microelement contents were increased with the AVG applications, only the amount of Fe decreased with the AVG applications. For this reason, AVG plant growth regulator is thought to have both increasing and decreasing effects on the mineral element contents of Alphonse Lavallée leaves.

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“…Among these inorganic Zn sources, ZnSO 4 is more commonly used to eliminate Zn deficiency as compared to the other sources (Mortvedt, 1991) since ZnSO 4 is more soluble in water, cheap and easy to supply (Mortvedt, 1991;Schulte and Walsh, 1982). Previous studies revealed that foliar Zn treatments not only improve growth and development of fruit trees but also significantly influence fruit yields (Aglar et al, 2016;Ozturk et al, 2019a;Sahota and Arora, 1981;Soliemanzadeh and Mozafari, 2014). Foliar Zn treatments increase fruit carbohydrate levels and activate carbohydrate enzymes (Yogaratnam and Johnson, 1982).…”

Section: Introductionmentioning

confidence: 99%

Foliar Zinc Sprays Affected Yield and Bioactive Compounds of Granny Smith Apple

Erdem

Sahin

2021

International Journal of Fruit Science

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In this study, effects of foliar Zn sprays at different periods on yield, fruit quality attributes, bioactive compounds and micro-macro elements of 'Granny Smith' (Malus x domestica Borkh.) apples grafted on MM111 rootstocks were investigated. Experimental treatments were arranged as control (without Zn sprays), Zn-1 [Zn sprays 1 month after full bloom (when the fruit had a size of a walnut)], Zn-2 (Zn sprays 1 and 2 months after full bloom) and Zn-3 (Zn sprays 1, 2 and 3 months after full bloom). Experimental trees were sprayed with 0.2% Zn (ZnSO 4 .7H 2 O). Compared to control, Zn sprays increased yields. SSC values of Zn-2 and Zn-3 treatments were lower than the control and Zn-1 treatments. The total phenolics and total flavonoids of Zn-treated fruit were lower than the control fruit. The greatest vitamin C and antioxidant activity were obtained from Zn-2 and Zn-3 treatments, respectively. Zn-2 and Zn-3 treatments had greater zinc and phosphorus concentrations than the control treatments and Zn-sprayed fruit had greater nitrogen and potassium concentrations than the control fruit.It was concluded based on present findings that Zn treatments could be used as an effective tool to increase yield, antioxidant activity and mineral elements of 'Granny Smith' apples.

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The effects of aminoethoxyvinylglycine and foliar zinc treatments on pre-harvest drops and fruit quality attributes of Jersey Mac apples

Cited by 14 publications

References 29 publications

Use of Biostimulants for Organic Apple Production: Effects on Tree Growth, Yield, and Fruit Quality at Harvest and During Storage

Use of Biostimulants for Organic Apple Production: Effects on Tree Growth, Yield, and Fruit Quality at Harvest and During Storage

The effect of Aminoethoxyvinylglycine (AVG) applications on mineral contents of grape leaves

Foliar Zinc Sprays Affected Yield and Bioactive Compounds of Granny Smith Apple

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