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Developmental Stages Of Ovule And Megagametophyte In Chenopodium Botrys L. (Chenopodiaceae), Abdolkarim Chehregani, Behrouz Malayeri, Nafiseh Yousefi
Developmental Stages Of Ovule And Megagametophyte In Chenopodium Botrys L. (Chenopodiaceae), Abdolkarim Chehregani, Behrouz Malayeri, Nafiseh Yousefi
Turkish Journal of Botany
The ovule ontogenesis and the megasporogenesis stages in Chenopodium botrys L. were studied with light microscopy. Flowers and young pods were removed from natural plants and fixed in FAA 70, stored in 70% ethanol, embedded in paraffin, and sectioned at 7 µm with a microtome. Staining was carried out with Hematoxylin and Eosin and developmental stages of ovule were studied. The results of this research showed that ovule development, including megasporogenesis and initial stages of megagametogenesis, occurred while flowers were still in bud. In C. botrys the female gametophyte has a monosporic origin and the developmental pattern exhibited by this …
The Genus Halothamnus Jaub. & Spach (Chenopodiaceae) In Turkey, Helmut Freitag, Vagif Atamov, Esat Çeti̇n, Mustafa Aslan
The Genus Halothamnus Jaub. & Spach (Chenopodiaceae) In Turkey, Helmut Freitag, Vagif Atamov, Esat Çeti̇n, Mustafa Aslan
Turkish Journal of Botany
The semidesert taxon Halothamnus (Chenopodiaceae), which is confirmed to supersede the later Aellenia, is represented in Turkey by H. glaucus subsp. glaucus and H. hierochunticus. The former was known to occur in Kars and Ağri provinces but was found recently in Kayseri province as well. The latter is a new record for the flora of Turkey from Şanlıurfa province close to the Syrian border. Full descriptions of the genus and the species occurring in Turkey are given and the case of Aellenia is discussed. Images and distributional data including maps are provided.