Flower and inflorescence development in Salicornia (Chenopodiaceae)статья
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Дата последнего поиска статьи во внешних источниках: 4 февраля 2014 г.
Аннотация:Five species of Salicornia are investigated with respect
to flower and inflorescence development. The
triad of flowers likely represents a dichasium. Flowers
possess three to four tepals, one or two stamens
and two or three carpels. In the central flower of a
triad, stamen insertion is always in the median plane,
which is a major symmetry plane of a flower. Major
symmetry planes of lateral flowers are usually parallel
to the major symmetry plane of the central
flower, whereas they are expected to be perpendicular
to that of the central flower according to the dichasium
model. This could be explained by strong
displacement of positions of ablasted subtending
bracts of lateral flowers from the transversal plane
towards the subtending bract of the dichasium. This
study showed the absence of a clear correlation between
presence of one or two stamens and ploidy
level in Salicornia. The species S. heterantha exhibits
one of most curious combinations of different
types of organ fusion in angiosperms. All three
flowers of a dichasium have their perianth tube basally
congenitally united with the main inflorescence
axis. The distal part of the perianth tube of central
flowers of S. heterantha is postgentinally fused to
the inflorescence main axis.