Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Factors Involved in Rooting Response of M.9 (Malus domestica Borkh.) Dwarf Apple Rootstock to Stem Etiolation.

묻어떼기에 의한 사과 왜성대목 M.9 번식 시 발근에 미치는 요인

  • Kwon, Soon-Il (Apple Experiment Station, National Institute of Horticulture & Herbal Science, KO.A.) ;
  • Kim, Mok-Jong (Apple Experiment Station, National Institute of Horticulture & Herbal Science, KO.A.) ;
  • Paek, Pong-Nyol (Apple Experiment Station, National Institute of Horticulture & Herbal Science, KO.A.) ;
  • Nam, Jong-Chul (Apple Experiment Station, National Institute of Horticulture & Herbal Science, KO.A.) ;
  • Choi, Cheol (Division of Plant Biosciences, Kyungpook National Univ) ;
  • Kang, In-Kyu (Dept. of Environmental Horticulture, Kyungpook National Univ.)
  • 권순일 (국립원예특작과학원 사과시험장) ;
  • 김목종 (국립원예특작과학원 사과시험장) ;
  • 백봉렬 (국립원예특작과학원 사과시험장) ;
  • 남종철 (국립원예특작과학원 사과시험장) ;
  • 최철 (경북대학교 식물생명과학부) ;
  • 강인규 (경북대학교 환경원예학과)
  • Published : 2009.06.30
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Abstract

The main objective of this research was to improve rooting of M.9 apple rootstock through layering time, shading, layering material and water content of the layering part. Among the treatments, rooting was improved by mother plant shading or an earlier covering (layering in shoot length 2 cm) of shoots. Rooting and root growth of sawdust, chaff or vermiculite treatments were significantly higher than those of the control (soil). In the study of layering material water content, -40 kPa treatment increased rooting ratio, number of roots and root growth compared to -60 kPa treatment and control. These results suggest that early-covering, layering with sawdust, chaff, or vermiculite, and keeping the water content in the layering part at -40 kPa could improve rooting and root growth in M.9 rootstock propagation.

본 시험은 사과의 주요 왜성 대목인 M.9 대목의 묻어떼기에 의한 번식 시 복토시기, 차광, 복토재료 및 복토부위의 수분 정도 등 발근에 영향을 미치는 몇 가지 요인들을 살펴보고 발근율을 높이는 방법을 구명하고자 하였다. M.9 대목의 묻어떼기 번식 시 모수의 차광 처리 및 복토시기 별 발근 촉진 효과는 조기 복토(신초 2cm 신장 시 복토)처리가 관행구 보다 유의하게 높았다. 복토 재료 별 발근 촉진 및 생육을 시험한 결과 질석, 팽연왕겨, 톱방 등은 대조구인 양토보다 유의하게 높았다. 복토 부위의 수분 상태별 발근효과 및 생육을 시험한 결과는 -40 kPa 처리구의 발근율은 99%로 -60 kPa 처리구와 무처리의 발근율 91% 보다 유의하게 높았으며, 근수가 많았고 근장도 길었다. 그러므로 M.9 대목의 묻어떼기 번식 시 복토시기가 빠를수록, 복토재료는 질석, 팽연왕겨, 톱밥 등을 사용하고, 복토부위의 수분 상태는 -40 kPa로 유지를 하는 것이 발근율 및 우량묘생산에 유리할 것이라 생각된다.

Keywords

References

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