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자료유형
학술저널
저자정보
저널정보
한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY JOURNAL OF THE KOREAN SOCIETY FOR HORTICULTURAL SCIENCE Vol.46 No.5
발행연도
2005.10
수록면
295 - 299 (5page)

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The effect of gibberellin and its inhibitors to the shape of potato microtubers by using an in vitro tuberization system was investigated. Tuber shape was studied using the length/width (L/W) ratio as a trait value. The microtubers produced by in vitro culture of the cultivars 'Red Pontiac' and 'Superior' were round shaped, and the cultivars 'Shepordy' and 'Dejima' were oval and round oval shaped. In the case of 'Superior', tuberization was inhibited by the addition of gibberellin (GA₃) to the tuberization medium and shapes of microtubers were shifted from round (L/W, 1.08) to oblong (L/W, 2.05) at 0.1 ㎎ㆍL?¹ concentration. The shape of microtubers of 'Red Pontiac' was also changed from round (L/W, 0.99) to round oval (L/W, 1.4) by the treatment of GA₃ at 0.1 ㎎ㆍL?¹. In vitro tuber formation from 'Shepordy' and 'Dejima' was promoted by the treatment of 500 ㎎ㆍL?¹ chlorocholine chloride (CCC) and 200 ㎎ㆍL?¹ paclobutrazol (PBZ). With the CCC treatment, the tuber shapes of 'Dejima' and 'Shepordy' were shifted from round oval (L/W, 1.33) to round (L/W, 1.07) and from oval (L/W, 1.72) to round oval (L/W, 1.42), respectively. This tendency was more apparent with the PBZ treatment; the L/W ratios of 'Dejima' and 'Shepordy' tubers were 0.99 and 1.19, respectively. These results indicate that gibberellin inhibitors not only promote tuber induction but also change tuber into a round shape. We propose that GA₃ plays a crucial role in determining tuber shape of potato during tuber development.

목차

Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgements
Literature Cited

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