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논문 상세정보

Abstract

The production of sweet (su) and super sweet corns (sh2) has been economically feasible in Korea in recent years. Major factors limiting super sweet corn production are low germination and low seedling vigor. Since seed quality is closely related to seed maturity, the optimum harvest time for the seed production of sweet and super sweet corns was studied and the quality of seeds with varying maturities was investigated in 2001 and 2002 cropping seasons. The parents of the sweet corn seeds were Hybrid Early Sunglow and 'Golden Cross Bantam 70' and those of super sweet corn were Xtrasweet 82 and 'For­tune'. Seeds were harvested at 21, 28, 35, 42, 49, and 56 days after silking (DAS). As the seeds developed, seed weight of sweet corn increased and the seed moisture content decreased faster than that of super sweet corn. Germination rates of sweet corn seeds harvested 21 and 28 DAS at $25^{\circ}C$ and emergence rates in the cold soil test were significantly lower than those of seeds harvested after 42 DAS in both years. Although the germination rates of super sweet corn seeds with varying maturities showed similar patterns as sweet corn seeds at $25^{\circ}C$, the emergence rate of super sweet corn seeds in cold soil test continuously increased with seed maturity. This suggests that seed quality of super sweet corn should be tested in a cold soil test to estimate field emergence. As the seeds developed, leakage of total sugars and electrolytes from the both sweet and super sweet corn seeds decreased up to 42 or 49 DAS. The $\alpha-amylase$ activities of both sweet and super sweet corn seeds increased with seed maturity from 21 to 35 or 49 DAS depending on genotype and year. The optimum harvest time for the seed production of sweet corn was 42 DAS and 49 DAS for super sweet corn considering emergence rate and plumule dry weight in the cold soil test, leakage of sugars and electrolytes from the seeds, and $\alpha-amylase$ activity.

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이 논문을 인용한 문헌 (3)

  1. Lee, Suk-Soon ; Yun, Sang-Hee ; Yang, Seung-Kyu ; Hong, Seung-Beom 2006. "Characteristics of Sweet and Super Sweet Corn Seeds Shelled at Different Seed Moisture and Threshing Method Conditions" Korean journal of crop science = 韓國作物學會誌, 51(7): 632~638 
  2. Lee Suk-Soon ; Seo Jung-Moon ; Hong Seung-Beom 2006. "Ethylene Production and Internal Structure of Developing Maize Seeds" Korean journal of crop science = 韓國作物學會誌, 51(5): 425~431 
  3. Lee Suk-Soon ; Yun Sang-Hee ; Yang Seung-Kyu ; Hong Seung-Beom 2006. "Changes in Seed Vigour of Sweet and Super Sweet Corn Hybrids as Affected by Storage Conditions" Korean journal of crop science = 韓國作物學會誌, 51(5): 432~439 

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