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2018 Vol.31, Issue 6

Research Article

Effect of Gibberellin Treatment on Growth and Flowering Characteristics in the Cultivation of Aquilegia japonica Nakai & H. Hara
Hoon Geun Oh1*
,
Joung Won Lee1
,
Gyeong Ja Lee2
,
Jae Seong Park2
1Researcher, Chungcheongbuk-do Agricultural Research and Extension Services
2Senior Researcher, Chungcheongbuk-do Agricultural Research and Extension Services
*Corresponding Author
31 December 2018. pp. 591-596
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Abstract

This study was conducted to develop gibberellin treatment technique to enhance flower initiation in Aquilegia japonica Nakai & H. Hara. Seedlings were planted in 12㎝-diameter pots on October 2016 and grown in green house. Ambient temperature in the green house was set at minimum 15℃ during day and night to suppress flower initiation at cold temperature condition. Two different types of gibberellin, GA3 and GA4+7, at 4 different concentration levels 100, 200, 400 and 600 ㎎/L, were tested in this study. Gibberellin was sprayed first at planting and secondly at 1-week after planting. Ten to fifteen ㎖ of gibberellin was sprayed for each pot. Plant height and petiole length were elongated by both gibberellin types, flowering was more enhanced by GA3 (91.7∼100%) compared to of GA4+7. However, abnormal flower was less observed in GA3 treatment (0∼16.7%) than GA4+7. Number of flower stalks per plant ranged from 1.9 to 2.5. Number of flowers per plant ranged from 6.8 to 10.3. Differences in flowering characteristics between treatments were statistically significant. Optimal gibberellin treatment to enhance flower initiation in A. japonica Nakai & H. Hara substituting cold treatment was GA3 at the concentration between 400 ㎎/L to 600 ㎎/L.

Keywords
Floral differentiation
Plant growth regulator
Stem elongation
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Information
  • Publisher :The Plant Resources Society of Korea
  • Publisher(Ko) :한국자원식물학회
  • Journal Title :Korean Journal of Plant Resources
  • Journal Title(Ko) :한국자원식물학회지
  • Volume : 31
  • No :6
  • Pages :591-596
  • Received Date : 2018-08-07
  • Revised Date : 2018-09-28
  • Accepted Date : 2018-10-29
  • DOI :https://doi.org/10.7732/kjpr.2018.31.6.591
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