Peculiarities of gynoecium and ovule structure in representatives of genera Cerasus, Microcerasus and Amygdalus (Rosaceae)

Lyudmila Yandovka; Ivan Shamrov

doi:10.21638/11701/spbu03.2016.402

Authors

Lyudmila Yandovka Herzen State Pedagogical University of Russia, 48, Moika nab., Saint Petersburg, 191186, Russian Federation
Ivan Shamrov Herzen State Pedagogical University of Russia, 48, Moika nab., Saint Petersburg, 191186, Russian Federation

DOI:

https://doi.org/10.21638/11701/spbu03.2016.402

Abstract

The gynoecium and ovule morphogenesis in Cerasus, Microcerasus and Amygdalus was studied. Pseudomonomerous gynoecium consists of two carpels: a large carpel is fertile (4 ovules are formed in it, two ovules only develop, whereas the others stay at primordial stage) and a small sterile carpel (the ovules do not arise). The gynoecium in Cerasus, Microcerasus and Amygdalus may be determined as syncarpous. The ovule is hemi-anatropous, crassinucellate, unitegmic, characterized by short funiculus, massive raphe, mesochalase and hypostase. The integument is of dermal-subdermal origin. The postament and podium in the nucellus in species were studied for a first time. Embryo sac develops by Polygonum-type. Refs 26. Figs 3.

Keywords:

Cerasus avium, C. vulgaris, C. fruticosa, Microcerasus tomentosa, Amygdalus nana, morphogenesis, gynoecium, ovule

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