Breeding of White Rose "Snow Day" with Resistance to Powdery Mildew (Sphaerotheca pannosa var. rosae)

흰가루병에 강한 흰색 장미 "Snow Day" 육성

  • Kim, Seung-Tae (Floriculture Research Div., National Institute of Horticulture & Herbal Science RDA) ;
  • Kim, Won-Hee (Floriculture Research Div., National Institute of Horticulture & Herbal Science RDA) ;
  • Kim, Young-Jin (Floriculture Research Div., National Institute of Horticulture & Herbal Science RDA) ;
  • Huh, Kun-Yang (Floriculture Research Div., National Institute of Horticulture & Herbal Science RDA) ;
  • Lee, Eun-Kyung (Floriculture Research Div., National Institute of Horticulture & Herbal Science RDA) ;
  • Park, Pil-Man (Floriculture Research Div., National Institute of Horticulture & Herbal Science RDA)
  • 김성태 (국립원예특작과학원 화훼과) ;
  • 김원희 (국립원예특작과학원 화훼과) ;
  • 김영진 (국립원예특작과학원 화훼과) ;
  • 허건양 (국립원예특작과학원 화훼과) ;
  • 이은경 (국립원예특작과학원 화훼과) ;
  • 박필만 (국립원예특작과학원 화훼과)
  • Received : 2009.11.04
  • Published : 20091200

Abstract

A new standard rose cultivar "Snow Day" was bred from the cross between pink standard cultivar "Saphia" and pink standard cultivar "Bridal Beauty" at the National Institute of Horticulture & Herbal Science. The cross was made in 2003 and "Snow Day" was finally selected in 2008 after evaluating characteristics for three years from 2006 to 2008. A white standard cultivar, "Snow Day" grows vigorously and resistant to powder mildew. The major characteristics of this cultivar are $152stems/m^2/year$ in yield, 81.8 cm in length of cut flower, 11.3 cm in flower diameter, 29.2 in petal number, and 13.7 days in vase life. This cultivar can be propagated by both cutting and grafting. The consumer's preference for this cultivar is relatively higher than that for the control cultivar, "Tineke".

2003년 화색과 잎의 광택이 우수하고 절화장이 길며 다수성인 품종 "Saphia"를 모계로 절화장이 길며 다수성이지만 잎이 약하고 흰가루병에 약한 품종인 "Bridal Beauty"를 인공교배 하여 얻은 실생계통 42주에 대하여 2004~2005년에 1차선발을 하여 1계통을 선발하였으며, 2006~2008까지 3차에 거쳐 특성검정을 실시한 후 최종 선발 된 '원교 D1-1008'을 2008년 농작물 직무육성 신품종 선정위원회를 거쳐 "Snow Day"로 명명하였다. "Snow Day"의 화색은 흰색으로 RHS 칼라챠트번호 155A로 나타나며, 흰가루병에 대하여 저항성인 특징을 가지고 있다. 꽃잎수는 29.2개이며 화폭은 11.3 cm로 "Tineke"보다 약간 컸다. 년간 절화수량은 10a당 152본이며 절화장은 81.8 cm 절화경경은 6.7 mm였고 절화수명은 13.7일 정도를 나타내었다.

Keywords

References

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