ISHS Acta Horticulturae 619: XXVI International Horticultural Congress: Potatoes, Healthy Food for Humanity: International Developments in Breeding, Production, Protection and Utilization
EVALUATION OF VARIOUS CHEMICALS ON DORMANCY BREAKING AND SUBSEQUENT EFFECTS ON GROWTH AND YIELD IN POTATO MICROTUBERS UNDER GREENHOUSE CONDITIONS |
| Authors: | F. Rehman, S.K. Lee, A. Khabir, H. Joung |
| Keywords: | Potato (Solanum tuberosum L), dormancy, rindite, GA3, CS2, thiourea and decay ratio |
| Abstract:
The effect of carbon disulfide (CS2), gibberellic acid (GA3), rindite and thiourea on dormancy breaking of potato microtubers and subsequent effect on minituber yield was studied. The chemicals were tested on 3 potato cultivars having different dormancy release characters. The tubers treated with GA3 took 19 days to sprout 50% tubers in cultivar ‘Désirée’, while in cultivars ‘Atlantic’ and ‘Diamont’ the treatments of GA3 and rindite took 31 and 21 days respectively. The tubers treated with thiourea caused highest decay ratio of tubers in all cultivars as compared to other treatments. The tubers treated with GA3 produced thin and elongated sprouts, while vigorous and flattened sprouts were produced in tubers treated with CS2 and thiourea. Significant differences were observed among cultivars and treatments for number of minitubers and weight of tubers/pot. | |
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