A New Malting Barley Cultivar, “Hopum” with High Quality and BaYMV Resistance

A new malting barley variety, “Hopum”, was developed from the cross between “Sacheon 6” and “Misato Golden” at the Yeongnam Agricultural Research Institute (YARI) in 2003. An elite line, YMB 1785-3B-14-2-1, was selected in 1999 and designated as “Milyang114”. It showed good agronomic performance in the regional adaptation yield trials (RYT) from 2001 to 2003 and was released with the name of “Hopum” having BaYMV resistance. The average heading and maturing dates of Hopum were April 15 and May 21, which were same and 2 days earler than “Jinyang”, respectively, at the regional adaptation yield trials (RYT). Hopum had longer culm length (84 cm), more spikes per m² (846) and higher 1,000 grain weight (42.1 g) than those of “Jinyang” in paddy field condition. It showed resistance to BaYMV in regions of Naju, Jinju, Milyang and moderately resistance in Iksan. However, the response mode of Hopum to other environmental stresses was similar to Jinyang. The yield potential of Hopum in the regional adaptation yield trials (RYT) was about 5.28MT/ha in paddy fields, which was about 20% higher than Jinyang. While in upland field in Cheju province, Hopum showed 5.48MT/ha, which was about 21% higher than Jinyang. It has good malting quality including high grain assortment, low protein content, and germination energy, high malt extract and friability and short filtration speed. The Kolbach index and diastatic power of Hopum were better than those of Jinyang.