KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Comparative Studies on Cotton Seed Germinability with Tetrazolium Viability Test and X-ray Contrast Methods

  • Na, Young-Wang (Research Policy Bureau, Rural Development Administration) ;
  • Shim, Sang-In (Research Institute of Life Science, Gyeongsang National University) ;
  • Chung, Jung-Sung (Research Institute of Life Science, Gyeongsang National University) ;
  • Rho, Il-Rae (Research Institute of Life Science, Gyeongsang National University) ;
  • Kim, Seok-Hyeon (Research Institute of Life Science, Gyeongsang National University)
  • Received : 2014.04.02
  • Accepted : 2014.05.26
  • Published : 2014.06.30
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Abstract

Seed viability testing provides valuable information for assessing seed lot germinability. However, most testing methods require destruction of seed prior to test. Because the dissected seeds for viability test cannot be used further evaluation, the nondestructively X-ray photography technique that can be applied for the evaluation of seed quality has been developed. In order to know the validity and accuracy of X-ray photography technique in seed evaluation test that conducted to remove the abnormal seed from a seed lot, we have compared the results from tetrazolium viability test, germination test and X-ray contrast method in cotton. Metallic salts treatment increased the efficiency of X-ray photographic method by enhancing the penetration of X-ray in abnormal or damaged seeds rather than normal seeds that have strong and well-organized tissues in seed. Cotton seeds presoaked for 16 hr in distilled water followed by soaking into metallic salt solution (5% NaI in water) for 60 min were easily classified seeds into dead seed and viable seed based on the radiography images obtained by X-ray radiation. We concluded that soft X-ray photography was reliable to find out the various defective characters due to heat and mechanical damage of seeds.

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References

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