BGN 3: Two x-ray induced mutants in Moravian barley BARLEY GENETICS NEWSLETTER, VOL. 3, II. RESEARCH NOTES
Haus, p. 19

II.13. Two x-ray induced mutants in Moravian barley.

T. E. Haus, Department of Agronomy, Colorado State University, Ft. Collins, Colorado 80521, U.S.A.

The cultivar, Moravian, is grown extensively in Colorado for malting and brewing purposes. This cultivar has very tall, weak culms. In the attempt to induce mutations in culm length, 2000 seeds were irradiated with 10,000 r in 1970. Of numerous mutant types found in the M2 generation, one plant row contained a brachytic type mutant. This mutant has been increased and it appears that it will be possible to use it directly as an improved Moravian type cultivar. Malting and brewing of this cultivar will be done on a large scale in the fall of 1973. This mutant type has had no lodging at yields up to 100 bushels per acre (approximately 5500 kg/ha), but has some lodging at yields in excess of 100 bushels per acre.

A second mutant, tentatively designated wst5, is a white streak mutant similar in appearance to wst1. Tests for allelism (Tsuchiya BGN 2: 79-87; BGN 3:68-69) indicate that this mutant is not allelic to any of the previously designated wst mutants and, therefore, will be symbolized as wst5.

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