KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Comparison of Morpho-physiological Characteristics in Diploid and Tetraploid Platycodon grandiflorum

  • Kwon, Soo-Jeong (Dept. of Food Nutrition and Cookery, Woosong College) ;
  • Lee, Hee-Doo (Chungbuk Agricultural Research and Extension Services) ;
  • Seo, Dong-Yeon (Dept. of Hotel and Restaurant Culinary Art, Kunjang University) ;
  • Moon, Young-Ja (Dept. of Food Nutrition and Cookery, Woosong College) ;
  • Cho, Gab-Yeon (Dept. of Food Science and Biotechnology, Woosong University) ;
  • Boo, Hee-Ock (WELLPHYTO Co. Ltd., BI Center, GIST) ;
  • Woo, Sun-Hee (Dept. of Crop Science, Chungbuk National University) ;
  • Kim, Hag-Hyun (Dept. of Food Nutrition and Cookery, Woosong College)
  • Received : 2016.05.27
  • Accepted : 2016.06.09
  • Published : 2016.06.30
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Abstract

The present study was performed to compare the morpho-physiological characteristics of the tetraploid and diploid varieties of Platycodon grandiflorum and to obtain basic data for cultivating a tetraploid variety with high yield and content of functional substances. The plant height of the tetraploid variety (54.0 cm) was slightly higher than that of the diploid variety. The leaf length and width of the tetraploid variety were 10.2 cm and 7.3 cm, respectively. The results obtained from the present study revealed that the form of the leaf changed from lanceolate to ovate, and the chlorophyll content in the tetraploid variety (16.7) was slightly higher than that in the diploid variety. The photosynthetic rate significantly increased (24%) to $13.4{\mu}mol\;CO_2{\cdot}m^{-2}{\cdot}s^{-1}$ in the tetraploid variety from that of the diploid variety. The pollen viability of the tetraploid variety was decreased by approximately 33% with respect to that of the diploid variety, but this did not have a significant adverse effect on seed production. The fresh weight of tetraploid P. grandiflorum was 49.4 g, which was approximately 44% higher than that of the diploid variety.

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References

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