EFFECTS OF SOME CHEMICAL SUBSTANCES ON POLLEN GERMINATION AND TUBE GROWTH IN APRICOT

IAA, GA₃, Kinetin and Boric acid (0, 0.05, 0.5, 5, 25, 50 and 100 ppm) were added to agar+sucrose media to determine their effects on pollen germination and tube growth of apricots.
Effects of chemical substances on pollen germination and tube length were different depending on the cultivars and doses.
Results showed that IAA and Boric acid stimulated germination and tube growth in Hasanbey cv., but decreased in the other cvs.
The best results were obtained at 0.05 ppm in both chemicals in Hasanbey cv., but the higher doses decreased germination and tube growth.
The lower doses of GA₃ increased pollen germination.
While germination rate in control was 59.93%, it was increased to 81.45% by 0.05 ppm GA₃ application in Karacabey cv.
Pollen tube elongation was the same as pollen germination of GA₃. Germination and tube growth increased from 0 ppm to 5 ppm by Kinetin application.
Pollen tubes developed abnormally at higher concentrations of all chemical substances.

XI International Symposium on Apricot Culture

I. Bolat, L. Pirlak

apricot, pollen germination and tube growth, chemical substances

https://doi.org/10.17660/ActaHortic.1999.488.53