Skorupska ht; Desamero Nv; Palmer Rg 1993

• Authors: Skorupska ht; Desamero Nv; Palmer Rg
• Title: Possible homeosis in flower development in cultivated soybean glycine-max l. merr. morphoanatomy and genetics
• Location: Journal of heredity, 84 (2). 1993. 97-104.
• Abstract: we have identified a spontaneous mutation in soybean (glycine max (l.) merr) that alters flower development and produces apetalous male-sterile flowers. the apetalous male-sterile soybean mutation exhibited floral structure abnormalities similar to several homeotic gene mutations in Antirrhinum and arabidopsis. stereoscopy, light microscopy, and scanning electron microscopy observations were made on flower buds at different development stages. the characteristic features were the lack of standard petal, lateral wings, and keel petals and the appearance of an elongated sepaloid calyx. gynoecia were characterized by enlarged unfused ovaries and exposed ovules. the number of stamens was reduced, and various levels of stamen malformation were observed. male sterility was documented, and it was attributed to tapetum malfunction. genetic studies indicated that a single recessive nuclear gene is responsible for this apetalous male-sterile character in soybean. no linkages were detected with ln (leaflet shape), pb (pubescence tip), enp (endopeptidase), ap (acid phosphatase), pgi2 (phosphoglucose isomerase), idh2 (isocitrate dehydrogenase), or aco2 (aconitase).