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Effect of Peanut Seed Orientation on Germination, Seedling Biomass, and Morphology in an Oak Tree Sawdust Cultivation System

  • Ahn, Junsik (Department of Medicine, College of Medicine, Chung-Ang University) ;
  • Song, Ilchan (Department of Medicine, College of Medicine, Chung-Ang University) ;
  • Kim, Dongjae (Department of Medicine, College of Medicine, Chung-Ang University) ;
  • Lee, Joon Chul (Agricultural Corporation Co.) ;
  • Moon, Sungkwon (Department of Food Science, College of Biotechnology and Natural Resource, Chung-Ang University) ;
  • Myoung, Sooncheol (Department of Urology, College of Medicine, Chung-Ang University) ;
  • Ko, Kisung (Department of Medicine, College of Medicine, Chung-Ang University)
  • Received : 2016.12.20
  • Accepted : 2016.12.27
  • Published : 2017.08.28

Abstract

We performed seed germination tests to investigate the effects of seed sowing orientation on germination viability on peanut (Arachis hypogaea L.) sprouts. Specifically, we assessed the influence of seed sowing orientation on germination rate, seedling weight, and seedling length, as well as the seedling vigor index. The seeds were sown in oak tree sawdust at 3.0 cm depth. Four seed orientations were tested: vertical with the hypocotyl end down, vertical with the hypocotyl end up, horizontal with the hypocotyl end down, and horizontal with the hypocotyl end up. The mean seed germination percentages of the four seed orientations were significantly different (p < 0.01) and ranged from 25 to 91.7%. The vertical orientation with hypocotyl-end-down and hypocotyl-end-up orientations showed the highest (91.7%) and lowest (25%) germination rates, respectively. The vertical orientation with the hypocotyl end down produced the heaviest (4.9 g) seedlings and the longest hypocotyls (4.65 cm). This orientation also produced the longest true leaf + epycotyl (2.15 cm) and had the highest seedling vigor index (197.1). The seedlings had a straight growth pattern, whereas seedlings from seeds sown with the hypocotyl up had an awkward plumular hook shape. Taken together, to produce peanut sprouts, we recommend placing the seeds vertically with the hypocotyl end down because this orientation leads to a high germination rate, high biomass production, and high overall seedling quality.

Acknowledgement

Supported by : Korea Food Research Institute, National Research Foundation of Korea

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