Variation of Grain and Malt Qualities in Barley as Affected by Cultivars and Environments
WANG Jun-mei, ZHANG Guo-ping, CHEN Jin-xin, DING Shou-ren and ZHOU Ti-yao (Agronomy Department, Zhejiang University , Hangzhou 310029 , P. R. China;Institute of Crop and Nuclear Technique Application, Zhejiang Academy of Agricultural Sciences , Hangzhou 310021 , P.R.China; The National Center for Testing Malt, Lianyungang 222023 , P. R. China)
Inferior and unstable quality of malt barley in China has limited its wide use in malting and brewing industries. In this research, eight two-rowed barley cultivars were planted at 7 locations with different ecological conditions in southern China, to investigate the cultivar and environmental effect on grain and malt qualities. The results showed that grain protein content differed dramatically among locations, but there were no significant differences among cultivars. For four malt qualities including diastatic power, wort viscosity, Kolbach index and malt extract, significant differences were found among cultivars and locations, except for diastatic power among cultivars. Coefficients of variance(CV)caused by location were greater than those caused by cultivar for each quality parameter, especially for diastatic power and Kolbach index, indicating the predominant influence of environment on malt quality. The analysis showed that grain protein content was positively related to diastatic power and wort viscosity, and negatively to malt extract. Kolbach index was positively related to malt extract, and negatively to diastatic power and wort viscosity. Diastatic power showed positive and negative correlation with wort viscosity and malt extract, respectively.
【CateGory Index】： S512.3