BGN 10: Screening for Low Acid-Soluble beta-glucan Barleys BARLEY GENETICS NEWSLETTER, VOL. 10, II. RESEARCH NOTES
Lance and Nilan, p. 41

II. 18. Screening for Low Acid-Soluble beta-glucan Barleys.

R. C. M. Lance and R. A. Nilan, Department of Agronomy and Soils, Washington State University, Pullman, Washington 99164 (U.S.A.)

Barley endosperm cell walls predominantly consist of beta-glucans which have been implicated as an undesirable factor in malting and brewing quality and also in nutritional quality for monogastric animals. A random selection of 543 Ethiopian barleys from the USDA world collection were screened for low acid-soluble beta-glucan content (Greenberg and Whitmore, 1974). Barley flour was extracted using a KCl/HCl buffer (pH 1.5) for 4 hr at 40°C. The supernatant from centrifuged samples was equilibrated at 20°C and viscosity estimated using an Ostwald viscometer. Low viscosity lines have been selected and are being used in genetic studies and for parental material. The results of the screening are shown in Figure 1. One selection, PI 356,497, shows considerable promise especially with regard to other kernel characteristics.

Figure 1. Acid-Soluble Viscosities


Greenberg, D. C. and E. T. Whitmore, 1974. J. Inst. Brew. 80:31-33.

BGN 10 toc
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