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2015, vol. 20, br. 39, str. 3-16
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Primena NAA i BA u proređivanju plodova nekih komercijalnih sorti jabuke
Application of NAA and BA in chemical thinning of some commercial apple cultivars
Biotechnical Faculty, University of Montenegro, Podgorica, Montenegro
Ključne reči: alfa-naftil sirćetna kiselina; benziladenin; hemijsko proređivanje plodova
Keywords: alfa-naphthaleneacetic acid; benzyladenine; chemical fruit thinning
Sažetak
U radu je prikazan efekat proređivanja plodova nekih komercijalnih sorti jabuke pomoću NAA and BA biljnih regulatora. Primenjene su sledeće koncentracije: NAA u tri koncentracije - 13,2 ppm, 17,82 ppm and 26,73 ppm; kombinacija BA i NAA (BA - 60 ppm, 100 ppm, 120 ppm or 140 ppm + NAA 4.29 ppm). Svi primenjeni tretmani sa NAA i BA + NAA su adekvatno proredili plodove kod sorti 'McIntosh' i 'Jonathan', dok je primena NAA 17,82 ppm i 26,73 ppm i kombinacija BA 140 ppm+ NAA 4.29 ppm bila efikasna kod 'Prima'. Što se tiče prosečne mase plodova i broja plodova iz kategorije krupnih (> 75 mm ili > 65 mm), kao i broja plodova po površini poprečnog preseka debla varijanta BA 140 ppm + NAA 4,29 ppm je bila najefektivnija kod sorte 'McIntosh' i 'Prima', a BA 100 ppm + nAa 4,29 ppm kod sorte 'Jonathan'.
Abstract
This paper presents the fruit thinning response of some commercial apple cultivars to NAA and BA plant regulators. The experiment was designed to evaluate NAA applied separately at three concentrations - 13.2 ppm, 17.82 ppm and 26.73 ppm, and BA + NAA combinations (BA - 60 ppm, 100 ppm, 120 ppm or 140 ppm + NAA 4.29 ppm) for thinning the assessed apple cultivars. All treatments with NAA and BA + NAA adequately thinned 'McIntosh' and 'Jonathan', whereas the application of NAA 17.82 ppm and 26.73 ppm and the combined treatment BA 140 ppm+ NAA 4.29 ppm were effective fruit thinners for 'Prima'. In terms of the average fruit weight, number of fruits categorized as large (> 75 mm or > 65 mm), and number of fruit per trunk cross-sectional area, the treatment BA 140 ppm + NAA 4.29 ppm was most effective on 'McIntosh' and 'Prima', whereas BA 100 ppm + NAA 4.29 ppm had the best effect on 'Jonathan'.
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