A New Rubus coreanus Miq. Cultivar, “Jung-Keum 5” with Large Fruit and High Productivity

Abstract

A clone bank that contained highly productive and superior genotypes of　 R. coreanusMiq. was assembled in 1998.regularly completed flowering and fruiting were used as official materials for superior tree breeding. To evaluate the floweringand fruiting, the length of the fruiting lateral (LF), the number offlowers per fruiting lateral (NFL) and the number of fruit perfruiting lateral (NFFL) were investigated. Fruits were harvested when they fully ripen and the fruthe weight of fruit (WF) and soluble solids were measured. In 2001, 17 of the original 227 clones were identified as being themost superior, and these selected genotypes were tested for regional adaptability in four different regions in 2002. Finally, theseadvanced selections including Jung-Keum 5 were evaluated for flowering, fruiting and fruit production characteristics fromand larger fruit size than the contrast clone that was shownmean value for the most characteristics. Selection effect of the new cultivar were shown 148.8% (NFL), 151.2% (NFL), 125.2%(WF) and 160.4% (yield/individual; YI) superior incomparison with the contrast clone, respectively.