Uticaj proheksadion-kalcijuma i etefona na bujnost sorti trešnje
Influence of Prohexadione-Calcium and Ethephon on Vigor of Sweet Cherry Cultivars
Pregled/ Otvaranje
Autor
Zec, Gordan
Fotiric Aksic, Milica
Milatovic, Dragan
Colic, Slavica
Djordjevic, Boban
Djurovic, Dejan
Ključne reči
trešnjabujnost
bioregulatori
proheksadion-kalcijum
etefon
sweet cherry
vigor
bioregulators
prohexadione-calcium
ethephon
Metadata
Prikaz svih podataka o dokumentuApstrakt
Cilj ovog rada je bio ispitivanje uticaja kombinovane primene dva
bioregulatora: proheksadion-kalcijuma i etefona na bujnost sorti trešnje. Ipitivanja su
obavljena u proizvodnom zasadu trešnje u Grockoj na pet sorti: Burlat, Karmen, Sanberst,
Kordija i Regina okalemljenih na podlozi Kolt. Tretman bioregulatorima je obavljen u
proleće u dva navrata: početkom i krajem maja. Na kraju vegetacionog perioda izmereni su
sledeći parametri: dužina i prečnik letorasta, broj nodusa, dužina internodija i površina lista.
Svi ispitivani parametri bujnosti su, u manjoj ili većoj meri, imali manje vrednosti na stablima
na kojima je obavljeno tretiranje bioregulatorima. Pored toga, bioregulatori su uticali na
značajno povećanje broja formiranih majskih buketića kod svih ispitivanih sorti, osim kod
sorte Burlat. In Serbia, in the majority of sweet cherry orchards, vigorous rootstocks (Mazzard and
Mahaleb seedlings and clonal rootstock ‘Colt’) are used. Cherry trees grafted on these
rootstocks are characterized by vigorous growth and the subsequent late coming into bearing.
The aim of this study was to examine the effect of the combined use of two bioregulators:
Prohexadione-calcium and Ethephon on vigor of sweet cherry cultivars. Studies were carried
out in a cherry orchard in Grocka (near the Belgrade) on five cultivars: ‘Bigarreau Hatif
Burlat’, ‘Sunburst’, ‘Carmen’, ‘Kordia’ and ‘Regina’ grafted on the rootstock ‘Colt’. There
were two treatments with Prohexadione-calcium (250 mg/l) and Ethephon (175 mg/l). The
first treatment was done when the shoots were 8-10 cm long, and the second one three weeks
later. At the end of the growing season were conducted measurements of the following
parameters: length of shoots, diameter of shoots, number of nodes per shoot, leaf area, and the
number of spurs per tree. All parameters of vigor had less values on the trees treated with
bioregulators. Length of the terminal shoots on treated trees was lower by 24-35% comparing
to control. In addition, bioregulators influenced significant increase in the number of spurs
(by 12-74%) in all tested cultivars, except for the cultivar ‘Burlat’.