Quality characters and identification of breeding materials in malting barley

摘要

Germplasms and breeding lines of malting barley at National Yeongnam Agricultural Experinment Station (NYAES) were evaluated for malting barley quality improvement. Among the numerous malting barley quality parameters, the mean of protein content was 12.3 percent between 10.7 percent to 14.0 percent and range of the beta-glucan content was from 3.5 percent to 5.8 percent, the mean was 4.6 percent. The length of acrospire, non-germination rate, friability, the speed of filtration, extract yield, kolbach index, diastatic power were significantly different between the individual varieties, however the other traits were not significantly different. The results of correlation analysis among 15 quality parameters showed significant positive correlationbetween crude protein content and malt protein content. However, other quality parameters such as sugar content, fiablity, extract yield, and kolbach index had negative correlation with crude protein content. Therefore, crude protein content could be oneof the major factors that deteriorate quality. The varieties of Viva, Nishino-chikara, Kinukei 9, Kinukei 12, Sacheon 6 and Jinyangbori that showed over the 80 percent in extract yield and the higher diastatic power, will be used by crossing parents forimprove the quality of malting barley.