endosperm

The paper presents the results of a comparative study of the reproductive biology of a number of Crimean fl ora species and valuable plants introduced to the south of Russia belonging to various families (Magnoliaceae, Annonaceae, Ericaceae, Campanulaceae, Anacardiaceae, Lamiaceae, Ranunculaceae, Davidiaceae, Nyssaceae, Onagraceae, Papaveraceae), which made it possible to establish some features and regularities in the formation of the generative structures of the reproductive system, consisting in the conjugation of the development of male and female elements, the matu

The research presents the results of morphological study of seeds belong to five species of Iris L.: I. aphylla L., I. halophila Pall., I. pseudacorus L. I. pumila L., I. sibirica L. which existed in Saratov region and cultivated in the botanical gardens of national research of Saratov state university, previously named «N. G. Chernyshevsky».

In the Saratov region all species of Iris are listed in the regional Red Book, with this connection, to preserve these plants, it is necessary to introduce them in an extensive researches, protection and establishing them in the literature. special interest is the study of seeds due to the direct relation with the potential possibility of generative propagation of Iris species, the article presents the results of an anatomical study of the seeds of seven species which belong to Iris L. in Saratov region flora.