ANATOMY OF THE CARYOPSIS OF BRIZA MAXIMA (POACEAE)
作者:
Thomas L. Rost,
Primavera Izaguirre de Artucio,
Edward B. Risley,
期刊:
American Journal of Botany
(WILEY Available online 1990)
卷期:
Volume 77,
issue 1
页码: 69-76
ISSN:0002-9122
年代: 1990
DOI:10.1002/j.1537-2197.1990.tb13529.x
出版商: Wiley
数据来源: WILEY
摘要:
Briza maxima(quaking grass) is a cosmopolitan grass common to Europe and North and South America. It grows in disturbed soils and on roadsides. The hemispherical caryopsis is embedded between a leaflike lemma and flattened palea. The embryo is of the festucoid type. The scutellum shows two surrounding ridges at the edge of the scutellum/endosperm boundary, and has lateral lobes. A broad epiblast extends toward the embryo apex and is continuous with the dorsal surface of the coleorhiza. The single‐layered aleurone surrounds the starchy endosperm and is discontinuous around the embryo. The caryopsis coat is thin, except at the placental pad where it is thickened by the pigment strand and the nucellar projection.
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