Effects of Pro-Ca on Vegetative and Generative Growth in ‘Golden Delicious’ Apple Trees Having Light Crop Load

Yıl 2016, Cilt: 45 Sayı: (Özel Sayı 1) 7. Ulusal Bahçe Bitkileri Kongresi, 33 - 38, 31.03.2016

Ayşe Nilgün Atay , Fatma Koyuncu , Ersin Atay

Öz

The control of the balance between generative and vegetative growth in apple production is one of the most fundamental practices. In this study, we investigated that the effect of the Pro-Ca application on vegetative and generative growth in the application year (2011) and the following years (2012 and 2013) in Golden Delicious apple trees that in the ‘off-year’ of an alternate bearing cycle. Pro-Ca reduced shoot length by 45% in the application year and by 34% in the following year compared to control. No significant differences were observed for shoot length between Pro-Ca and control treatments in the year 2013. Pro-Ca significantly inhibited shoot growth from the start of 30 days after full bloom (the third week of May) until the harvest Pro-Ca application reduced internode length by 32% in the treated year and by 28% in the following year in comparison to control. There were no significant differences between Pro-Ca and control for flower density, fruit set, crop density and yield efficiency. Although Pro-Ca application was successful in the control of vegetative growth, its effect by itself was not satisfactory in generative development.

Anahtar Kelimeler

Shoot development , growth retardants , C/N , chlorophyll density

Golden Delicious Elmasında Yok Yılı Ağaçlarına Pro-Ca Uygulamasının Vejetatif ve Generatif Gelişime Etkileri

Öz

Elma yetiştiriciliğinde vejetatif ve generatif gelişim arasındaki dengenin kontrolü en temel ve gerekli uygulamalardan birisidir. Bu çalışmada, periyodisite döngüsünün yok yılında olan Golden Delicious elma ağaçlarına uygulanan Pro-Ca’nın (prohexadione-calcium) uygulama yılı (2011) ile sonraki yıllarda (2012-2013) generatif ve vejetatif gelişime etkileri incelenmiştir. Pro-Ca sürgün uzunluğunu kontrole kıyasla uygulama yılında %45, sonraki yılda ise %34 oranında azaltmıştır. Uygulamadan iki yıl sonrasında ise Pro-Ca ve kontrol arasındaki farklılık istatistik açıdan önemli bulunmamıştır. Pro-Ca uygulanmış sürgünlerde tam çiçeklenmeden yaklaşık 30. günden (Mayıs ayının 3. haftasından) itibaren büyüme hızı azalmış ve hasat zamanına kadar çok sınırlı bir büyüme devam etmiştir. Pro-Ca’nın sürgün uzunluğuna paralel olarak boğum arası mesafeyi uygulama yapılan yılda %32, sonraki yılda ise %28 azalttığı belirlenmiştir. Çiçek yoğunluğu, meyve tutumu, ürün yoğunluğu ve verim etkinliği gibi kriterler açısından kontrol ve Pro-Ca uygulaması arasında istatistiksel bir farklılık görülmemiştir. Pro-Ca uygulaması her ne kadar vejetatif gelişimin kontrolünde oldukça başarılı olsa da generatif gelişimde tek başına bir değişim sağlayamamıştır.

Anahtar Kelimeler

Sürgün gelişimi , büyüme engelleyiciler , C/N , klorofil yoğunluğu

Kaynakça

• Atay, A.N., 2013. Bazı bitki büyüme düzenleyicilerinin ‘Golden Delicious’ elmasında çiçeklenme düzensizliği, verim ve vegetatif gelişime etkileri. Doktora Tezi. Süleyman Demirel Üniversitesi, Isparta, 123s.
• Buban, T., Faust, M., 1982. Flower bud induction in apple trees: Internal control and differentiation. Horticultural Reviews, 4, 174-203.
• Byers, R.E., Carbaugh, D.H., Combs, L.D., 2004. The influence of prohexadione-calcium sprays on apple tree growth, chemical fruit thinning, and return bloom. J. of Amer. Pomol. Soc., 58:111-117.
• Cline, J.A., 2006. Apogee™-A new plant bioregulator for apples. Factsheet, 06-045, Queens Printer of Ontario, Toronto.
• Cline, J.A., Embree, C.G., Hebb, J., Nichols, D.S., 2008. Performance of prohexadione-calcium on shoot growth and fruit quality of apple effect of spray surfactants. Canadian J. of Plant Sci., 88:165-174.
• Duyvelshoff, C., Cline, J.A., 2013. Ethephon and prohexadione-calcium influence the flowering, early yield, and vegetative growth of young ‘Northern Spy’ apple trees. Scientia Horticulturae 151:128-134.
• Evans, J.R., Evans, R.R., Regusci, C.L. Rademacher, W., 1999. Mode of action, metabolism, and uptake of BASF 125W, prohexadionecalcium. HortScience 34:1200-1201.
• Faust, M., 1989. Physiology of Temperate Zone Fruit Trees. John Wiley and Sons, 338p., New York, USA.
• Forshey, C.G., Elfving, D.C., Stebbins, R.L., 1992. Training and pruning of apple and pear trees. J. Amer. Soc. for Hort. Sci. 162.
• Greene, D.W., Autio, W.R., 1994. Notching techniques increase branching of young apple trees. J. Amer. Soc. for Hort. Sci. 119:678-682.
• Grossmann, K., 1992. Plant growth retardants: their mode of action and benefit for physiological research. In: Karssen C, Van Loon LC, Vreugdenhill D (Eds.). Progress in Plant Growth Regulation. Kluwer Academic, Doredrecht, Netherlands, pp:788-797.
• Hanke, M.V., Flachowsky, H., Peil, A., Hattasch, C., 2007. No flower no fruit – Genetic potentials to trigger flowering in fruit trees. Genes, Genomes and Genomics 1(1):1-20.
• Lauri, P.E., Kelner, J.J., Trottier, C., Costes, E., 2010. Insights into secondary growth in perennial plants: its unequal spatial and temporal dynamics in the apple (Malus domestica) is driven by architectural position and fruit load. Ann Bot. 105(4):607-616.
• Manakasem, Y., 2004. Physiology of flowering and fruit setting. School of crop production technology, Institute of Agricultural, Suranaree University of Technology, http://sutir.sut.ac.th:8080/sutir/handle/123456 789/2032 (Erişim Tarihi: 10.08.2012).
• Mata, A.P., Val, J., Blanco, A., 2006. Differential effects of prohexadione-calcium on red colour development in ‘Royal Gala’ and ‘Fuji’ apples. J. Hort. Sci. & Biotechnology 81:8488.
• Medjdoub, R, Val, J., Blanco, A., 2004. Prohexadione-ca inhibits vegetative growth of ‘Smoothee Golden Delicious’ apple trees. Scientia Horticulturae 101:243-253.
• Miller, S.S., 2002. Prohexadione-calcium controls vegetative shoot growth in apple. Journal of Tree Fruit Production 3:11-28.
• Rademacher, W., Kober, R., 2003. Efficient use of prohexadione-Ca in pome fruits. European J. of Hort. Sci., 68(3):101-107.
• Ramirez, H., 1979. Effects of growth substances on some physiological processes in apple in relation to flower initiation. Ph.D. Thesis. University of Bristol, UK.
• Taiz, L., Zeiger, E., 2002. Plant Physiology. Sinauer Associates Inc Publishers, Massachusetts, 690p.
• Tromp, J., 1987. Growth and flower bud formation in apple as affected by paclobutrazol, daminozide and tree orientation in combination with various Gibberellins. J. Hort. Sci. & Biotechnology, 62:433-440.
• Wertheim, S.J., Webster, A.D., 2005. Manipulation of growth and development by plant bioregulators. In: Tromp, J., Webster, A.D., Wertheim, S.J. (Eds.): Fundamentals of Temperate Zone Tree Fruit Production. Backhuys Publishers, Leiden., pp:267-294.