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Soybean Genetics Newsletter

Abstract

Hildebrand and Hymowitz (1980a) reported that two soybean genotypes were found that lack detectable seed a- amylase activity . The cultivar 'Chestnut' produces an inactive a- amylase protein, Span (Hildebrand and Hymowitz , 1980b) ; 'Altona' is a mixture of genotypes that have a a-amylase protein of normal activity (sp1b) or lack it entirely (sp1) (Hildebrand and Hymowitz , 1980b) . Chestnut was selected from 'Habaro' and introduced into the U.S. as PI 20,405 in 1906 from Kharbarovsk, USSR (Hymowitz et al ., 1977) .

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