BREEDING OF KOREAN BLACK RASPBERRY (RUBUS COREANUS MIQ.) FOR HIGH PRODUCTIVITY IN KOREA
This study was conducted on Korean black raspberry (Rubus coreanus Miq.) genotypes selected for high productivity. Eight major agronomic traits were investigated on 198 clones from the clone bank established in the Korea Forest Research Institute, Suwon, Korea. The investigated traits were quite variable depending on the clones. Length of fruiting lateral showed a significant positive correlation (p ≤ 0.01) with no. of flowers and no. of fruits per fruiting lateral, fruit width, and fruit weight. Soluble solids content showed a significant negative correlation with no. of flowers and no. of fruits per fruiting lateral, fruit width, fruit length, and fruit weight except the length of fruiting lateral. The selection levels were based on the number of fruit per fruiting lateral (NFFL) over 20, the weight of fruit (WF) over 1.3 g, and yield of individual per fruiting lateral (YIFL) over 25 g were applied on 198 clones and resulted in 17 clones being selected. These superior genotypes showed regional differences for amount of fruiting among 4 different test sites. When the number of fruit per fruiting lateral, weight of fruit (WF), yield of individual (YI), and sugar content were satisfied over 20, 1.4 g, 6 kg and 9.5 °Brix, respectively, as a selection condition, 5 clones were reselected as the superior trees among the 17 clones, after 3 years.
Kim, S.H., Chung, H.G. and Han , J. (2008). BREEDING OF KOREAN BLACK RASPBERRY (RUBUS COREANUS MIQ.) FOR HIGH PRODUCTIVITY IN KOREA . Acta Hortic. 777, 141-146
fruiting, fruit chemistry, yield, cultivar development, selection pressure