TY - JOUR

T1 - Female Gametophyte Development and Embryogenesis in Taxus Baccata L

AU - Brukhin, Vladimir B.

AU - Bozhkov, Peter V.

N1 - Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 1996

Y1 - 1996

N2 - Crassinucellate ovules are initiated in Taxus, directly from the shoot apex. The rudimentary pollen chamber is formed in the nucellus. A linear tetrad of megaspores with a functional chalazal megaspore is formed. A free-nuclear stage is characteristic at the beginning of megagametophyte development. Archegonia without ventral canal cell are solitary or in complexes. The embryo has a very long suspensor even after maturation. Two types of polyembryony have been revealed: i) embryogenic redifferentiation of suspensor cells and ii) cleavage of embryonic region in the early embryo. In the northern temperate climate of St. Petersburg one month delay in development of reproductive structures has been noted.

AB - Crassinucellate ovules are initiated in Taxus, directly from the shoot apex. The rudimentary pollen chamber is formed in the nucellus. A linear tetrad of megaspores with a functional chalazal megaspore is formed. A free-nuclear stage is characteristic at the beginning of megagametophyte development. Archegonia without ventral canal cell are solitary or in complexes. The embryo has a very long suspensor even after maturation. Two types of polyembryony have been revealed: i) embryogenic redifferentiation of suspensor cells and ii) cleavage of embryonic region in the early embryo. In the northern temperate climate of St. Petersburg one month delay in development of reproductive structures has been noted.

KW - Archegonium

KW - Embryogenesis

KW - Megagametophyte

KW - Suspensor

KW - Taxus baccata L.

UR - http://www.scopus.com/inward/record.url?scp=0042538846&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0042538846

VL - 65

SP - 135

EP - 139

JO - Acta Societatis Botanicorum Poloniae

JF - Acta Societatis Botanicorum Poloniae

SN - 0001-6977

IS - 1-2

ER -