Breeding Science
Online ISSN : 1347-3735
Print ISSN : 1344-7610
ISSN-L : 1344-7610
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The two-row malting barley cultivar ‘New Sachiho Golden’ with null lipoxygenase-1 improves flavor stability in beer and was developed by marker-assisted selection
Mika OozekiToshinori SotomeNaoto HaruyamaMasahiro YamaguchiHirohisa WatanabeTakeshi OkiyamaTsuneo KatoToshiyuki TakayamaMakoto OyamaTakashi NagamineYasuo SuzukiTakako ToyoshimaTakahiro SekiwaKaori OonoTetsuya SaitoMasao UsuiShin AraiTerunobu KumekawaEmiko SuzukiKaori ShiramaMakoto KiharaTakehiro HokiHideki MatsubaraRyo Ohsawa
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2017 Volume 67 Issue 2 Pages 165-171

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Abstract

Lipoxygenase-1 (LOX-1) null ‘New Sachiho Golden’ is a two-row malting barley (Hordeum vulgare L.) cultivar released in 2015 that was developed at the Tochigi Prefectural Agricultural Experimental Station by backcross breeding using the high-yield leading cultivar ‘Sachiho Golden’ as a recurrent parent and the LOX-1 null mutant ‘Daikei LM1’ as a non-recurrent parent. To develop ‘New Sachiho Golden’ we used a simple LOX activity assay and marker-assisted selection. This is the first LOX-1 null malting barley cultivar in Japan that is resistant to barley yellow mosaic virus (types I–III). Agronomic characteristics and malting qualities of ‘New Sachiho Golden’ were similar to those of ‘Sachiho Golden’, except that ‘New Sachiho Golden’ had no LOX activity in ungerminated grains and had clearly lower LOX activity during malting than ‘Sachiho Golden’. The concentrations of a trans-2-nonenal (T2N) precursor in wort and beer made from ‘New Sachiho Golden’ were significantly lower than in those made from ‘Sachiho Golden’, both before and after storage.

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© 2017 by JAPANESE SOCIETY OF BREEDING
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