Study of ovule and megagametophyte development in four species of subtribe phaseolinae (Leguminosae)

Ovule development, megasporogenesis and megagametogenesis were studied in Macroptilium bracteatum, Phaseolus augusti, P. vulgaris var. aborigineus and Vigna adenantha to elucidate their taxonomic position. The ovule is anacampylotropous, bitegmic and crassinucellate. Megaspore tetrads are linear in...

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Detalles Bibliográficos
Autores principales:	Soverna, A.F., Galati, B., Hoc, P.
Formato:	JOUR
Materias:	Embryo sac Megaspore tetrad Ovule Phaseolinae Fabaceae Macroptilium Macroptilium bracteatum Phaseolus (angiosperm) Phaseolus augusti Phaseolus vulgaris Polygonum Vigna Vigna adenantha
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00015296_v45_n2_p57_Soverna
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00015296_v45_n2_p57_Soverna
record_format	dspace
spelling	todo:paper_00015296_v45_n2_p57_Soverna2023-10-03T13:51:16Z Study of ovule and megagametophyte development in four species of subtribe phaseolinae (Leguminosae) Soverna, A.F. Galati, B. Hoc, P. Embryo sac Megaspore tetrad Ovule Phaseolinae Fabaceae Macroptilium Macroptilium bracteatum Phaseolus (angiosperm) Phaseolus augusti Phaseolus vulgaris Polygonum Vigna Vigna adenantha Ovule development, megasporogenesis and megagametogenesis were studied in Macroptilium bracteatum, Phaseolus augusti, P. vulgaris var. aborigineus and Vigna adenantha to elucidate their taxonomic position. The ovule is anacampylotropous, bitegmic and crassinucellate. Megaspore tetrads are linear in M. bracteatum and T-shaped in the other three species. In all species the chalazal megaspore produces an embryo sac of Polygonum type. The results are discussed in relation to the current taxonomic classification. Our findings support the position of Macroptilium as a separate genus and the inclusion of V. adenantha in the genus Phaseolus. This is the first report of the use of embryological characters to solve intergeneric relationships of the Phaseolus-Vigna-Macroptilium neotropical complex, pointing out the method's usefulness. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00015296_v45_n2_p57_Soverna
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Embryo sac Megaspore tetrad Ovule Phaseolinae Fabaceae Macroptilium Macroptilium bracteatum Phaseolus (angiosperm) Phaseolus augusti Phaseolus vulgaris Polygonum Vigna Vigna adenantha
spellingShingle	Embryo sac Megaspore tetrad Ovule Phaseolinae Fabaceae Macroptilium Macroptilium bracteatum Phaseolus (angiosperm) Phaseolus augusti Phaseolus vulgaris Polygonum Vigna Vigna adenantha Soverna, A.F. Galati, B. Hoc, P. Study of ovule and megagametophyte development in four species of subtribe phaseolinae (Leguminosae)
topic_facet	Embryo sac Megaspore tetrad Ovule Phaseolinae Fabaceae Macroptilium Macroptilium bracteatum Phaseolus (angiosperm) Phaseolus augusti Phaseolus vulgaris Polygonum Vigna Vigna adenantha
description	Ovule development, megasporogenesis and megagametogenesis were studied in Macroptilium bracteatum, Phaseolus augusti, P. vulgaris var. aborigineus and Vigna adenantha to elucidate their taxonomic position. The ovule is anacampylotropous, bitegmic and crassinucellate. Megaspore tetrads are linear in M. bracteatum and T-shaped in the other three species. In all species the chalazal megaspore produces an embryo sac of Polygonum type. The results are discussed in relation to the current taxonomic classification. Our findings support the position of Macroptilium as a separate genus and the inclusion of V. adenantha in the genus Phaseolus. This is the first report of the use of embryological characters to solve intergeneric relationships of the Phaseolus-Vigna-Macroptilium neotropical complex, pointing out the method's usefulness.
format	JOUR
author	Soverna, A.F. Galati, B. Hoc, P.
author_facet	Soverna, A.F. Galati, B. Hoc, P.
author_sort	Soverna, A.F.
title	Study of ovule and megagametophyte development in four species of subtribe phaseolinae (Leguminosae)
title_short	Study of ovule and megagametophyte development in four species of subtribe phaseolinae (Leguminosae)
title_full	Study of ovule and megagametophyte development in four species of subtribe phaseolinae (Leguminosae)
title_fullStr	Study of ovule and megagametophyte development in four species of subtribe phaseolinae (Leguminosae)
title_full_unstemmed	Study of ovule and megagametophyte development in four species of subtribe phaseolinae (Leguminosae)
title_sort	study of ovule and megagametophyte development in four species of subtribe phaseolinae (leguminosae)
url	http://hdl.handle.net/20.500.12110/paper_00015296_v45_n2_p57_Soverna
work_keys_str_mv	AT sovernaaf studyofovuleandmegagametophytedevelopmentinfourspeciesofsubtribephaseolinaeleguminosae AT galatib studyofovuleandmegagametophytedevelopmentinfourspeciesofsubtribephaseolinaeleguminosae AT hocp studyofovuleandmegagametophytedevelopmentinfourspeciesofsubtribephaseolinaeleguminosae
_version_	1807314759282851840

Study of ovule and megagametophyte development in four species of subtribe phaseolinae (Leguminosae)

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