POLLEN VIABILITY AND GERMINATION CAPACITY OF SOME NEW SWEET CHERRY CULTIVARS

Monica Pal, Viorel Mitre, Andreea Tripon, Laura Macavei, Mihai Lazar

Abstract


Pollen of 16 new sweet cherry cultivars (‘Carmen’, ‘Katalin’, ‘Vera’, ‘Bigarreau Burlat’, ‘Starking Hardy Giant’, ‘Early Red’, ‘Giant Red’, ‘Lapins’, ‘Canada Giant’, ‘Earlise’, ‘Kordia’, ‘Karina’, ‘Merchant’, ‘Sylvia’, ‘Regina’, ‘Summit’) was collected and investigated microscopically in laboratory for viability and germination capacity. Pollen viability was determinated by applying the colorimetric method, and germination capacity by cultivating pollen on solid medium with 1.5 g agar + 15 g sucrose + 100 ml distilled water. It was noticed that fertile pollen varied from approximately 32 % to 80 %, and the pollen germination percentages after 3 hours of incubation at temperature of 10oC, varied between 15.53 % and 82.75 %. After 24 hours of incubation under the same temperature of 10o C, germination capacity ranged between 23.07 % and 84.51 %. Germination capacity increased with increasing incubation temperature and period, and the highest germination was obtained at the temperature of 20oC after 24 hours of incubation, with 90.09 % capacity of germination in case of ‘Carmen’ cultivar, and the lowest capacity in case of ‘Canada Giant’ cultivar, with 42.39 % germination capacity.


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DOI: http://dx.doi.org/10.15835/buasvmcn-hort:10645


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