Ботанический журнал №2 2017 (962,50 руб.)

К настоящему времени многие авторы выделяют 5 морфологических типов (ортотропный, анатропный, гемитропный, кампилотропный и амфитропный), не считая варианты по положению семязачатков в завязи. <...> Предложена новая классификация морфологических вариантов семязачатка, которая включает 4 типа и 4 подтипа: ортотропный и анатропный типы, гемитропный тип и его подтипы (геми-анатропный и геми-ортотропный), кампилотропный тип и его подтипы (орто-кампилотропный и геми-кампилотропный). <...> Shamrov MORPHОLOGICAL TYPES OF OVULES IN FLOWERING PLANTS Herzen State Pedagogical University of Russia 191186 Russia, St. <...> shamrov@gmail.com The ovules of flowering plants are characterized by considerable diversity in their structure, development and, especially, in the form. <...> To date, many authors distinguish 5 morphological types (orthotropous, anatropous, hemitropous, campylotropous and amphitropous), besides variants of the ovule position in the ovary. <...> However, the characters for identificating the ovule types are not always well reasoned. <...> This is especially true for campylotropous and amphitropous ovules. <...> Based on the features of the ovule morphogenesis, we suggest a new classification of morphological variants of the ovules comprising 4 types and 4 subtypes. <...> Hemitropous type: hemi-anatropous subtype — straight morphological axis represented by funiculus and/or raphe, changes its angle to the placenta as a result of displacing the chalaza, hypostase and the vascular bundle in hemi-position; most of the ovule elements are located like in anatropous ovule, but at an angle of 45° to the placenta; hemi-orthotropous subtype—straight morphological axis passing through the funiculus or raphe is bent toward the structures of the chalazal area, the latter retaining the ortho-position; due to the greater growth of the structures of the micropylar and middle parts at the antiraphal side of <...>