Some Management Practices Affecting Outcrossing and Seed Production in Burley Tobacco (Nicotiana tabacum L.)

연초 버어리종의 자연교잡율과 종자생산에 관련된 몇가지 요인

  • 정석훈 (한국인삼연초연구원 수원시험장) ;
  • 최상주 (한국인삼연초연구원 수원시험장) ;
  • 조천준 (한국인삼연한국한국인삼연초연구원 전주시험장인삼연초연구원 수원시험장) ;
  • 김대송 (한국인삼연초연구원 전주시험장) ;
  • 조명조 (한국인삼연초연구원 연구기획부) ;
  • 이승철 (한국인삼연초연구원 음성시험장)
  • Published : 1996.12.01

Abstract

In this study effects of isolation distance, transplanting time of maternal plants, and bagging of flower head with the gauze-cloth bag on the outcrossing of burley tobacco (Nicotiana tabacum L.) were investigated. Also the effect of fertilizer level and control of the number of capsules per plant on seed production and quality were examined. A male sterile line. produced 0.3 to 3.8 capsules Per plant when it was Planted with normally flowering tobacco with the average outcrossing of 7.2 plants, ranging from 2 to 18 out of 20 plants. With the farther the isolation distance between maternal plants and pollen donor plant, the lower the outcrossing occurred. Outcrossing occurred even at the isolation distance of 312 m. When the maternal plants were transplanted 35 days after transplanting the pollen donor ones, the outcrossed plants were not decreased significantly. The bagging of the flower head with the gauze-cloth bas (#0.9∼ 1.0 mm) decreased the outcrossed plants significantly, but couldn't prevent the outcrossing completely. The seed amount per plant was higher in the highly fertilized cultivation. The number of seed capsules per plant affected significantly on seed yield and quality. When the seed capsules was controlled by 30 or 50 capsules per plant, the weight of 1,000 seeds and germination rate were higher than those with 70 or 90 capsules per plant. Key words : Nicotiana tabacum, outcrossing, bagging.

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References

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