@article { author = {Elsaadawi, Wagieh and Osman, Rifaat and El-Faramawi, Marwa and Bkhat, Husein and Kamal-El-Din, Marwah}, title = {On the Cretaceous mangroves of Bahariya Oasis, Egypt}, journal = {Taeckholmia}, volume = {36}, number = {1}, pages = {1-16}, year = {2016}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2016.11936}, abstract = {Petrified stems (rhizomes) of a fern are described from Late Cretaceous (Cenomanian)beds in Bahariya Oasis. The discovered stems are related to Paradoxopteris stromeriHirmer (fern rachii) and to Weichselia reticulata Stokes & Webb. (fern pinnae); bothalready known from also Cenomanian beds of this Oasis. Haloed axes are describedfrom Late Cretaceous (Campanian) beds, i.e. younger than the beds containing thepetrified stems. Comments on the nature of these axes, the affinities of the stems andthe palaeoenvironments of the area in the two mentioned geologic ages (Cenomanian &Campanian) are given.}, keywords = {Bahariya Oasis,Campanian,Cenomanian,Cretaceous,Egypt,Fossil mangroves,Osmundaceae}, url = {https://taec.journals.ekb.eg/article_11936.html}, eprint = {https://taec.journals.ekb.eg/article_11936_53721cca9dc21ded3671a4280f300733.pdf} } @article { author = {Shaaban, Hanan and Shabbara, Hanaa and Farag, Mohamed and El saadawi, Wagieh}, title = {A Simple Method to Obtain Microbial-free in vitro Moss Cultures}, journal = {Taeckholmia}, volume = {36}, number = {1}, pages = {17-25}, year = {2016}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2016.11937}, abstract = {Developing a suitable method for moss sterilization is a crucial step for successful invitro culture. Different chemical and physical methods have been tried by many authorsfor more than a century but with low axenic culture percentages. An easy and economic(no use of chemicals or antibiotics) cultivation method is developed here, which provedhigh success with three moss species starting from gametophores.}, keywords = {Axenic cultivation,Mosses,Bryum,Philonotis,sterilizing agents}, url = {https://taec.journals.ekb.eg/article_11937.html}, eprint = {https://taec.journals.ekb.eg/article_11937_b906f309e375daef822934fdc6c71fc1.pdf} } @article { author = {Morsy, Amal and Hassanein, Raifa and Saleh, Hend}, title = {Environmental Quality and Vegetation Analysis of Ismalia Bank. (Abo Zabal Industrial Area).}, journal = {Taeckholmia}, volume = {36}, number = {1}, pages = {26-44}, year = {2016}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2016.11938}, abstract = {The influence of Abo Zabal fertilizer factory on air quality and soil contaminationwere investigated. Air pollution index of different sites and soil pollution indices werecalculated. The metal contamination in the soils was evaluated by calculatingenrichment factor (EF), contamination factor (CF), geo-accumulation index (Igeo) andpollution load index (PLI). Soil quality for total heavy metals in the study area wasevaluated. The factory was found to change the reaction of the soil to become acidicand all heavy metals were shown to be high at the factory site and decreased withincreasing the distance from the factory. This pollution of the environment causedchanges in the vegetation of the study area.}, keywords = {Air Quality,fertilizer,Soil contamination,Vegetation}, url = {https://taec.journals.ekb.eg/article_11938.html}, eprint = {https://taec.journals.ekb.eg/article_11938_06787f1ecc7918b745b86fa595493d83.pdf} } @article { author = {darwish, Mona and El Safori, Yasser}, title = {Late Carboniferous Macroflora from Rod El-Hamal Formation Wadi Araba, North Eastern Desert, Egypt}, journal = {Taeckholmia}, volume = {36}, number = {1}, pages = {45-57}, year = {2016}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2016.11939}, abstract = {The Late Carboniferous of Rod El-Hamal Formation, Wadi Araba has some fossil plant remains content. Thesystematic description of these remains reveals the identification of twelve species representing Lycophyta,Sphenophyta, Pteridospermatophyta, and Cordaitophyta. All are recorded for the first time from this formation.}, keywords = {Cordaitophyta,Late Carboniferous,Lycophyta,Pteridospermatophyta,Sphenophyta,Rod El-Hamal Formation,wadi Araba}, url = {https://taec.journals.ekb.eg/article_11939.html}, eprint = {https://taec.journals.ekb.eg/article_11939_9e39bb67e60079b2e645bebc6a4d2e0b.pdf} } @article { author = {Salama, Fawzy and Abd El-Ghani, Monier and El-Tayeh, Noha and Amro, Ahmad and Abdrabbu, Heba}, title = {Weed flora of common crops in desert reclaimed arable lands of southern Egypt}, journal = {Taeckholmia}, volume = {36}, number = {1}, pages = {58-76}, year = {2016}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2016.11940}, abstract = {The weed flora of common crops of the desert reclaimed arable lands in southern Egypt was studied. Field data were collected from three major crops: wheat as a winter crop, millet as summer crop and alfa-alfa as a perennial crop. 146 stands (fields) from 8 sites in Qena Governorate were permanently visited during 2013 and 2014. A total of 169 species (105 annuals, 64 perennials) of the vascular plants belonged to 121 genera in 39 families constituted the flora of the study area. The most species-rich families were Poaceae, Asteraceae, Fabaceae, Brassicaceae, Chenopodiaceae, and Euphorbiaceae. Annual herbs were the best represented life form, followed by annual grasses, trees and perennial shrubs. Ballochore and pogonochore were the most represented dispersal types of seeds, while cyclochore and auxochore were the least represented. 26 species were categorized as dominants (highest Q-values), where they have a wide ecological range of distribution. Classification of the associated vegetation in 146 stands by cluster analysis yielded 5 vegetation groups (A-E); the vegetation groups A and E were mainly represented by weeds in wheat and alfa-alfa (winter season), while most the stands of groups B, C and D were represented by species in millet and alfa-alfa (summer season). These groups were separated along the first two axes of Bray-Curtis ordination.}, keywords = {Agroecology,life-form spectrum,summer crop,winter crop,segetal flora,diversity,weed vegetation,crop type}, url = {https://taec.journals.ekb.eg/article_11940.html}, eprint = {https://taec.journals.ekb.eg/article_11940_16b37173b49fda2ab1cd9d7bd1a4d113.pdf} } @article { author = {Mohamed, Al-Safa and Ahmed, Wafaa and Elshatoury, Einas and Mourad, Magdy}, title = {Leaf Anatomy, Chemical Composition as Well as Essential Oils and their Antibacterial Activity of Some Lauraceous Taxa}, journal = {Taeckholmia}, volume = {36}, number = {1}, pages = {77-101}, year = {2016}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2016.11943}, abstract = {Eight taxa of Lauraceae representing four genera were subjected to the present study. Themicro-morphological and chemical investigation were carried out according to traditionalmethods. The objective of the present study is to find criteria to facilitate the delimitation andidentification of the taxa under investigation. The obtained leaf micro-characters wereconsidered diagnostic at the generic and specific level. The extracted chemical compoundsfrom the taxa under investigation ranged from 41-61. Most of tested oils showed antibacterialactivity toward six bacteria strains. The most potent antibacterial oils were fromCinnamomum glanduliferum and C. verum. The antibacterial activity was due to oxygenatedand non-oxygenated monoterpenes (α-pinene, β-pineneandcineole). The antibacterial activityof Apollonias barbujana is due to (α-phellandrene rather than cineole). The obtained datafrom an anatomical and chemical point of view can be considered diagnostic at theinfraspecific level, but only to a certain extent.}, keywords = {Antibacterial activity,Essential oils,Lauraceae,leaf anatomy}, url = {https://taec.journals.ekb.eg/article_11943.html}, eprint = {https://taec.journals.ekb.eg/article_11943_0a66518d3d4345144a99befd2554c6a5.pdf} } @article { author = {El-Ghamery, Abbas and Morsy, Mohammed and Abu-Shahba, Mahmoud}, title = {Chromosome count and karyotype study on endemic species Silene schimperiana Boiss. (Caryophyllaceae), Sinai, Egypt.}, journal = {Taeckholmia}, volume = {36}, number = {1}, pages = {102-114}, year = {2016}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2016.11944}, abstract = {Chromosome count and karyotype study were performed on the available nine populations of theendangered endemic species Silene schimperiana Boiss., section Sclerocalycinae (Family:Caryophyllaceae), recorded only in a few localities in Sinai Peninsula, Egypt. The species studiedshowed chromosome number 2n=2x=24 for the first time in Egypt. The populations studied of S.schimperiana showed significant values of Pearson’s correlation according to karyotypic characters.The cluster analysis based on karyotypic characters divided the studied populations into two groupswith 92% similarity coefficient.}, keywords = {Karyotype,Silene schimperiana,Chromosome number,Chromosome count,Sinai,Egypt}, url = {https://taec.journals.ekb.eg/article_11944.html}, eprint = {https://taec.journals.ekb.eg/article_11944_292fdf1572ab2d37344e8e1928505d66.pdf} } @article { author = {Shamso, Eman and Khattab, Adel}, title = {Phenetic relationship between Malvaceae s.s. and its related families}, journal = {Taeckholmia}, volume = {36}, number = {1}, pages = {115-135}, year = {2016}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2016.11956}, abstract = {Systematic relationships in the Malvaceae s.s. and allied families were studied on the basis of numerical analysis. 103 macro- and micro morphological attributes including vegetative parts, pollen grains and seeds of 64 taxa belonging to 32 genera of Malvaceae s.s. and allied families (Sterculiaceae, Tiliaceae, Bombacaceae) were scored and the UPGMA clustering analysis was applied to investigate the phenetic relationships and to clarify the circumscription. Four main clusters are recognized viz. Sterculiaceae s.s. cluster, Tiliaceae- Exemplars of Strerculiaceae cluster, Malvaceae s.s. cluster and Bombacaceae s.s. – Exemplars of Sterculiaceae and Malvaceae cluster. The results delimited Sterculiaceae s.s. and Tiliaceae s.s. to containing the genera previously included in tribes Sterculieae and Tilieae respectively; also confirmed and verified the segregation of Byttnerioideae of Sterculiaceae s.l. and Grewioideae of Tiliaceae s.l. to be treated as distinct families Byttneriaceae and Spermanniaceae respectively. Our analysis recommended the treatment of subfamilies Dombeyoideae, Bombacoideae and Malvoideae of Malvaceae s.l. as distinct families: Dombeyaceae, Bombacaceae s.s. and Malvaceae s.s. and the final placement of Gossypium and Hibiscus in either Malvaceae or Bombacaceae is uncertain, as well as the circumscription of Pterospermum is obscure thus further study is necessary for these genera.}, keywords = {Byttneriaceae,Dombeyaceae,Phenetic relationship Spermanniaceae,Sterculiaceae s.s,Tiliaceae s.s}, url = {https://taec.journals.ekb.eg/article_11956.html}, eprint = {https://taec.journals.ekb.eg/article_11956_9501c70e3270bf6ba9a09abb16349c89.pdf} } @article { author = {Mobarak, Ahmed and Shaltout, Kamal and Ali, Hussein and Baraka, Dina and Aly, Saadia}, title = {Variations in floristic composition of wild and cultivated species associated with Moringa oleifera Lam. in Egypt}, journal = {Taeckholmia}, volume = {36}, number = {1}, pages = {136-157}, year = {2016}, publisher = {Cairo University Herbarium (CAI)}, issn = {1110-7413}, eissn = {2357-044X}, doi = {10.21608/taec.2016.11957}, abstract = {The aim of this work is to study the cultivated and wild species associated with Moringa oleifera in different sites in Egypt. The cultivated species were 174 related to 145 genera and 67 families, while the wild species were 45 related to 39 genera and 21 families. Fabaceae was the most represented cultivated family (15 species), while Poaceae was the most represented wild family (8 species). Phoenix dactylifera and Portulaca oleracea were the most common cultivated and wild species, respectively. Phanerophytes were the most represented life form, regarding the cultivated species (79.5%), whereas therophytes were the most represented life form (62.2%). The application of Two Way Indicator Species Analysis (TWINSPAN) on the floristic composition of the sampled stands led to classify them into 7 vegetation groups at level 5 for the cultivated species, and 5 groups at level 3 for the wild species. The cultivated groups were named according to their dominant species as follows: Ficus elastica, Abutilon hirtum, Cordia myxa, Carya illinoensis, Azadirachta indica, Ficus benjamina and Ceiba speciosa. In addition, the wild groups were: Pancratium maritimum, Digitaria ciliaris, Cyperus rotundus, Lantana camara and Bidens pilosa.}, keywords = {Cultivated species,Wild species,Life form,TWINSPAN,DECORANA}, url = {https://taec.journals.ekb.eg/article_11957.html}, eprint = {https://taec.journals.ekb.eg/article_11957_87d170967f21ebdad8ba3b91c864e5a2.pdf} }