However it did not affect flesh firmness, soluble solute content (SSC), titrable acidity and a*(redness), and it did not influence fruit thinning ratio
📌 3 Key Takeaways
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Objective & Hypothesis:The study was carried out in order to determine the effects of BA+GA 4+7 applications on fruit quality in ‘Fuji’ grafted on M9 rootstock in Isparta conditions.
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Key Findings & Data:When fruitlets reached 10 mm diameter, trees were applied with BA+GA4+7 at 0, 100 and 150 ppm (1.8 BA+1,8%GA4+7; Perlan) two times at one-week intervals.
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Conclusion & Impact:However it did not affect flesh firmness, soluble solute content (SSC), titrable acidity and a*(redness), and it did not influence fruit thinning ratio
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Malus x domestica · growth regulators · fruit size
Abstract
The study was carried out in order to determine the effects of BA+GA 4+7 applications on fruit quality in ‘Fuji’ grafted on M9 rootstock in Isparta conditions. When fruitlets reached 10 mm diameter, trees were applied with BA+GA4+7 at 0, 100 and 150 ppm (1.8 BA+1,8%GA4+7; Perlan) two times at one-week intervals. BA+GA4+7were most effective on fruit quality, which increased fruit weight, fruit diameter, fruit length and fruit shape (L/D ratio) and fruit ratio >65 mm (%) (first class fruit) compared to control. However it did not affect flesh firmness, soluble solute content (SSC), titrable acidity and a*(redness), and it did not influence fruit thinning ratio
AKINCIYILDIRIM, F., KEPENEK, G., ŞAN, B., YILDIRIM, A. N., KAÇAL, E. (2014). Effects Of Ba+Ga 4+7 Treatments On Fruit Quality In ‘Fuji’ Apple Variety. Türk Tarım ve Doğa Bilimleri Dergisi, Cilt: 1 - Sayı: Özel Sayı-2, 1387–1390. https://ajindex.com/articles/706563
Figure 1. Effect of BA+GA4+7 on fruit weight (a), fruit diameter (b), fruit length (c) and fruit shape (d) These results are in agreement with the reported studies (Kumar et al.,2003; Youn et al., 2004; Leite et al., 2006; DongHoon et al., 2010; Sepahvand et al., 2012).
Burak and Büyükyılmaz (1998) reported that the high doses of BA+GA4+7 had adverse effect on fruit shape while low doses increased fruit size, fruit length and fruit diameter. Also it was stated that the 25 ppm 6-BA+GA4+7 applied 14 days after full bloom greatly increased fruit size without causing any deformation in pear (Stern et al., 2007). Table Effect of BA+GA4+7 on L*, a*, b* values in fruit skin Dozes 0 (Control) 100 ppm BA+GA4+7 150 ppm BA+GA4+7 Lsd a* 30.480 29.053 16.020 a 48.603 30.720 16.777 a 3.711 4.625 1.359 The results of the effects of BA+GA4+7 applications on flesh firmness, SSC, pH and titrable acidity are presented in Table 2. We determined that 150 ppm BA+GA4+7 increased the pH value of fruit juice. The SSC and titrable acidity were not significantly affected by BA+GA4+7 applications compare to the control. Although the flesh firmness was not significantly affected by all applications, the highest flesh firmness was obtained from the control (mean 18,82 lb), which had small fruit size. Generally, fruit size is negatively correlated to firmness, especially in apples (Dell et al., 1999). These results did support the findings of a previous report (DongHoon et al., 2010).
Also, Youn et al. (2004) reported that flesh firmness was decreased by promalin (BA+GA4+7). L*, a*, b* values were obtained from BA+GA4+7 applications presented in Table While L* (Lightness) and a* (redness) in color of fruit skin was not affected by applications, b*(yellowness) values were significantly increased by BA+GA4+7 applications. In conclusion, it was demonstrated that BA+GA4+7 (especially 100 ppm) application can be useful for improving fruit size and shape when applied fruitlets 10 mm diameters two times at one week intervals in ‘Fuji’ apple. Bubán, T., 2000. The use of benzyladenine in orchard fruit growing: a mini review. Plant Growth Regulation 32: 381–390.
Burak, M., Büyükyilmaz, M., 1998. Effect Of Promalin On Fruit Shape And Quality Of Starking Delicious Apple Cultivar. Acta Hort. (ISHS) 463:365-370
Byers, R. E., 2003. Flower and Fruit Thinning and Vegetative: Fruit Balance, Apples (Botany, Production and Uses). Editor, Feree, D.C. and Warrington, I.J., Printed and Bound in the K by Biddl