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Breeding of Strawberry 'Okmae' for Forcing Culture with Less Labor Requirement for Fruit Thinning

적과 노력 절감용 촉성 딸기 '옥매' 품종 육성

  • An, Jae Uk (Division of Exportable Crops & Foods Science, Gyeongnam Agricultural Research & Extension Services) ;
  • Shim, Jae Suk (Division of Exportable Crops & Foods Science, Gyeongnam Agricultural Research & Extension Services) ;
  • Yoon, Hae Suk (Division of Exportable Crops & Foods Science, Gyeongnam Agricultural Research & Extension Services) ;
  • An, Chul Geon (Division of Exportable Crops & Foods Science, Gyeongnam Agricultural Research & Extension Services) ;
  • Hwang, Yeon Hyeon (Division of Exportable Crops & Foods Science, Gyeongnam Agricultural Research & Extension Services) ;
  • Chang, Young Ho (Division of Exportable Crops & Foods Science, Gyeongnam Agricultural Research & Extension Services) ;
  • Shon, Gil Man (Division of Exportable Crops & Foods Science, Gyeongnam Agricultural Research & Extension Services) ;
  • Rho, Chi Woong (Research and Development Bureau, Gyeongnam Agricultural Research & Extension Services) ;
  • Jeong, Byoung Ryong (Department of Horticulture, Division of Applied Life Science (BK21), Graduate School, Gyeongsang National University)
  • 안재욱 (경남농업기술원 수출농식품연구과) ;
  • 심재석 (경남농업기술원 수출농식품연구과) ;
  • 윤혜숙 (경남농업기술원 수출농식품연구과) ;
  • 안철근 (경남농업기술원 수출농식품연구과) ;
  • 황연현 (경남농업기술원 수출농식품연구과) ;
  • 장영호 (경남농업기술원 수출농식품연구과) ;
  • 손길만 (경남농업기술원 수출농식품연구과) ;
  • 노치웅 (경남농업기술원 연구개발국) ;
  • 정병룡 (경상대학교 대학원 응용생명과학부 원예학과)
  • Received : 2012.01.16
  • Accepted : 2012.08.20
  • Published : 2012.12.31

Abstract

A new strawberry cultivar (Fragaria ${\times}$ ananassa Duch.) 'Okmae' was developed from a cross between 'Toyonoka' and 'Maehyang'. This cultivar has a good fruit quality and suitable number of flowers per cluster for labor saving in fruit thinning. 'Gyoengnam No. 1' was selected as an elite line with vigorous plant growth, higher soluble solids content and fruit firmness after examining its characteristics and productivity in forcing cultures from 2007 to 2009. Farmer's field trial of 'Gyoengnam No. 1' was conducted in 2010 and it was registered as 'Okmae' thereafter. The general characteristics of 'Okmae' are vigorous growth habit, erect plant type, less number of leaf and elliptic leaf shape. 'Okmae' has long peduncle and 9-10 flowers per flower cluster which need less labor for fruit thinning. Fruits of 'Okmae' are conical having a bright red and glossy skin color. Although 'Okmae' has a smaller average fruit number per plant of 21.9 than that of the control cultivars, it's possible to produce high yield because of greater fruit weight of 26.0 g. 'Okmae' showed a high soluble solids content of $11.6^{\circ}Brix$, low acidity of 0.37%, and high firmness of $14.5g{\cdot}mm^{-2}$. It is sensitive to anthracnose and powery mildews, but high-quality strawberry can be harvested by using effective control measure.

'옥매(Okmae)'는 '도요노까(Toyonoka)'를 모본으로 하고 '매향(Maehyang)'을 부본으로 하여 교배하여 과실품질이 우수하고 화방당 화수가 적당하여 적과노력이 절감되는 특성에 근거하여 선발한 촉성재배용 품종이다. 2006년 초세가 왕성하며 당도와 경도가 높고 대과형인 96-2번 개체를 선발, 2007-2009년에 촉성재배작형으로 특성검정과 생산력 검정을 수행하여 '경남 1호'로 계통명을 부여하고 농가실증시험을 거쳐 '옥매'로 명명하였다. '옥매'의 주요 특성은 초세가 왕성하고 초형은 직립형으로 엽수는 적으며 엽형은 타원형이다. 화경장은 길고 화방당 화수는 9-10개로 적어 적과 노력이 적게 든다. 과형은 원추형이며 과색은 선홍색으로 광택이 있다. 주당 수확과수는 21.9개로 적지만 대과의 비율이 높고 평균과중이 26.0g으로 무거워 다수확이 가능하다. 당도가 $11.6^{\circ}Brix$로 높고 산도는 0.37%로 낮으며, 경도는 $14.5g{\cdot}mm^{-2}$로 '아끼히메'에 비해 우수하여 저장성이 뛰어나다. 탄저병에 저항성이 없으며, 흰가루병도 다소 약하지만, 방제에 유의하면 고품질의 딸기를 생산할 수 있다.

Keywords

References

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Cited by

  1. ‘Kuemsil’, a Strawberry Variety Suitable for Forcing Culture vol.52, pp.2, 2012, https://doi.org/10.9787/kjbs.2020.52.2.184