Breeding of Strawberry 'Okmae' for Forcing Culture with Less Labor Requirement for Fruit Thinning
2012
An, J.U., Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea | Shim, J.S., Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea | Yoon, H.S., Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea | An, C.G., Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea | Hwang, Y.H., Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea | Chang, Y.H., Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea | Shon, G.M., Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea | Rho, C.W., Gyeongnam Agricultural Research and Extension Service, Jinju, Republic of Korea | Jeong, B.R., Gyeongsang National University, Jinju, Republic of Korea
A new strawberry cultivar (Fragaria × 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 °Brix, low acidity of 0.37%, and high firmness of 14.5 gㆍmm-². It is sensitive to anthracnose and powery mildews, but high-quality strawberry can be harvested by using effective control measure.
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