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자료유형
학술저널
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한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY Vol.47 No.4
발행연도
2006.8
수록면
203 - 210 (8page)

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This research was designed to produce compact multiple-branched Ardisia pusilla pot plants during short-term by foliar-spraying with 6-benzylaminopurine (BA) related to spraying days after pinching (SDP). Two experiments were conducted by dividing into growth chamber test in winter season and glasshouse test in the following growing season to screen available concentration and spraying time after pinching. In growth chamber test, all rooted-cuttings pinched were foliar-sprayed with 0, 500, and 1500 ㎎ㆍL?¹ BA at 0, 7, 14, and 21 SDP. Branch formation was examined at 8 weeks after pinching. In glasshouse test, all rooted-cuttings pinched were foliar-sprayed with 0, 250, 500, and 1000 ㎎ㆍL?¹ BA at 0, 7, and 14 SDP. Final growth characteristics were examined at 12 weeks after pinching. Under growth chamber condition, although multiple branches formation successfully increased in BA concentration-dependent manner compared with the control, 1,500 ㎎ㆍL?¹ BA induced the highest lateral branches at 7 SDP followed by 0 and 14 SDP, subsequently at 8 weeks after pinching. In glasshouse culture, although applications at 7 and 14 SDP increased the number of primary and secondary branches in BA concentration-dependent manner, the number of branches in all combination between concentration and SDP did not scarcely increase further after 4 weeks. However, the number of secondary branches derived from primary branches were dramatically decreased to less than one branch after 4 weeks. Thus, it was suggested that both primary and secondary branching initiation, new lateral bud differentiation of A. pusilla, by BA and pinching were limited within 4 weeks after treatment. Moreover, secondary branches affected by BA started to degenerate after 4 weeks. Comparing with the control by pinching alone, all BA applications reduced plant size regardless of concentration and SDP. However, the increase of SDP and BA concentration reduced plant height and width, while induced more lateral branches. Thus, compact multiple-branched A. pusilla pot plants were successfully produced by using 1,000 ㎎ㆍL?¹ BA at 7-14 SDPs within 12 weeks after pinching.

목차

Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgement
Literature Cited

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