Abstract
The influence of gibberellic acid (GA₃) on the fruit growth pattern of the Minneola tungelo was investigated. The growth pattern follows a S-curve, similar to other citrus cultivars but the growth rate differs. GA₃, applied at low concentrations caused a slightly slower fruit growth rate compared to controls, resulting in smaller fruit. In the case of GA₃ , applied at 15ppm, fruit numbers exceeded those of the control. GA₃ treatment of fruit resulted in a slight decrease in average seed content. GA₃, had no significant effect on juice quality.
Highlights
Indien die waarnemings van die eerste seisoen vroeer geneem is en vrugte later geoes is, sou die twee krommes waarskynlik dieselfde patroon gevolg het
Die kromme van die tweede seisoen is in ooreenstemming met dié van ander sitrussoorte soos deur Bain,' Reuther et al Holtzhausen,’ Holtzhausen & De Lange'’ vir Valencias, en Garcia-Papi & G arcia-M artinez'’ vir Clementines bepaal is
It was evident that fruit of the Minneola tangelo follows a similar growth pattern (S-curve) to that of other citrus cultivars
Summary
Figuur 1 toon die boordplan en pnx;tbome vir bepaling van Minneola vruggroei in die 1985/86- en 1986/87-seisoene. Die gemiddelde aantal vrugte geproduseer per boom per behandeling het ook verskil: In die eerste seisoen is gemiddeld 177 en 237 vrugte deur kontrole en 15 dpm GA, bome onderskeidelik geproduseer. In die tweede seisoen het die vruggroeikrommes (figuur 2b) van die drie behandelings dieselfde neiging getoon, alhoewel die GA,-vrugte se groeitempo opsigtelik laer as dié van die kontrolevrugte was.
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