2 research outputs found
Uticaj BA i BA+GA4+7 na formiranje prevremenih granÄica na jednogodiÅ”njim sadnicama sorti jabuke
This study presents the influence of BA (6-benzyladenine) and BA+GA4+7 (6-benzyladenine + gibberellic acids 4 and 7) on feathering of one-year-old apple trees of two cultivars Jonagold and Äadel. Different concentrations of BA (300, 600, 1,200 and 1,800 mg L-1) and BA+GA4+7 (500, 1,000, 1,500 and 2,000 mg L-1) were applied, and two treatments for both chemicals were performed. The first treatment was applied at 70-cm height of nursery trees and the second 2 weeks later. Comparison was performed in relation to untreated control. An application of BA and BA+GA4+7 did not affect both rootstock and nursery tree diameter at 10 cm above the grafting union. Nursery trees of cultivar Jonagold were not influenced by treatments applied, whereas in cultivar Äadel, the treatment with BA+GA4+7 decreased apical growth of nursery trees. The development of sylleptic shoots in both cultivars tested was influenced by the type of growth regulator and concentration applied. Treatment with BA at 300 mg L-1 concentration in both cultivars tested did not influence total length and number of sylleptic shoots, as well as the number of sylleptic shoots longer than 20 cm. The most positive influence on all studied parameters was observed on nursery trees treated with the concentration of 1,200 mg L-1 BA. The lowest concentration of BA+GA4+7 (500 mg L-1) caused the low feathering of both studied cultivars. The higher concentrations (1,000, 1,500 and 2,000 mg L-1) similarly increased the number and total length of sylleptic shoots of nursery trees.U ovom radu je ispitivan uticaj BA (6-benziladenin) i BA+GA4+7 (6-benziladenin + giberelinska kiselina 4 i 7) na boÄno grananje jednogodiÅ”njih sadnica dve sorte jabuke Jonagold i Äadel. Primenjene su razliÄite koncentracije BA (300, 600, 1.200 i 1.800 mg L-1) i BA+GA4+7 (500, 1.000, 1.500 i 2.000 mg L-1) pri Äemu su kod oba hemijska jedinjenja tretmani izvedeni dva puta. Prvi tretman je izveden kada su sadnice bile visine 70 cm, a drugi tretman je izveden dve nedelje kasnije. Kontrola je bila bez tretiranja. Primena BA i BA+GA4+7 nije ispoljila uticaj na preÄnik podloge i sadnice na visini od 10 cm iznad spojnog mesta. Kod sadnica sorte Jonagold nisu registrovane razlike u vrÅ”nom porastu pod uticajem primenjenih tretmana, dok je kod sorte Äadel tretman sa BA+GA4+7 uticao na smanjenje vrÅ”nog porasta sadnica. Ustanovljeno je da su tip hemijskog regulatora i primenjena koncentracija uticali na razvoj prevremenih granÄica kod obe ispitivane sorte. Tretman sa BA u koncentraciji od 300 mg L-1 nije ispoljio uticaj na ukupnu dužinu i broj prevremenih granÄica, kao i na broj prevremenih granÄica dužih od 20 cm. Najpozitivniji uticaj na sve ispitivane parametre je zabeležen kod sadnica tretiranih sa BA u koncentraciji od 1.200 mg L-1. Najniža koncentracija BA+GA4+7 (500 mg L-1) je izazvala slabo grananje sadnica kod obe ispitivane sorte. VeÄe koncentracije (1.000, 1.500 i 2.000 mg L-1) su uslovile sliÄno poveÄanje broja i ukupne dužine prevremenih granÄica na sadnicama
The influence of BA and BA+GA4+7 on formation of sylleptic shoots on one-year-old apple nursery trees
This study presents the influence of BA (6-benzyladenine) and BA+GA4+7
(6-benzyladenine + gibberellic acids 4 and 7) on feathering of one-year-old
apple trees of two cultivars Jonagold and Äadel. Different concentrations of
BA (300, 600, 1,200 and 1,800 mg L-1) and BA+GA4+7 (500, 1,000, 1,500 and
2,000 mg L-1) were applied, and two treatments for both chemicals were
performed. The first treatment was applied at 70-cm height of nursery trees
and the second 2 weeks later. Comparison was performed in relation to
untreated control. An application of BA and BA+GA4+7 did not affect both
rootstock and nursery tree diameter at 10 cm above the grafting union.
Nursery trees of cultivar Jonagold were not influenced by treatments applied,
whereas in cultivar Äadel, the treatment with BA+GA4+7 decreased apical
growth of nursery trees. The development of sylleptic shoots in both
cultivars tested was influenced by the type of growth regulator and
concentration applied. Treatment with BA at 300 mg L-1 concentration in both
cultivars tested did not influence total length and number of sylleptic
shoots, as well as the number of sylleptic shoots longer than 20 cm. The most
positive influence on all studied parameters was observed on nursery trees
treated with the concentration of 1,200 mg L-1 BA. The lowest concentration
of BA+GA4+7 (500 mg L-1) caused the low feathering of both studied cultivars.
The higher concentrations (1,000, 1,500 and 2,000 mg L-1) similarly increased
the number and total length of sylleptic shoots of nursery trees. [Projekat
Ministarstva nauke Republike Srbije, br. TR31063 i br. III46008