Cairo University Herbarium (CAI)Taeckholmia1110-741337120171201Agro ecological assessment of Siwa Oasis arable lands1151193110.21608/taec.2017.11931ENA.El-SaiedBotany Department, Faculty of Science (Male), Al-Azhar UniversityA.El-GhameryBotany Department, Faculty of Science (Male), Al-Azhar UniversityO.KhafagiBotany Department, Faculty of Science (Female), Al-Azhar UniversityO.PowellSchool of Humanities, University of Tasmania, AustraliaJ.SilcockSchool of Biological Sciences, University of Queensland, St Lucia, AustraliaR.BedairBotany Department, Faculty of Science (Male), Al-Azhar UniversityJournal Article20170210A critical foundation of sustainable agriculture is to understand different agro-ecosystems components and to investigate relations between different species and environmental factors affecting their presence and expansion. The flora of Siwa Oasis agro-ecosystems was investigated and assessed. A total of 132 stands (66 in spring and another 66 in summer) were chosen to represent the study area and its soil properties during spring and summer. Cover of each species and foliage projective cover of each stand was visually estimated. Species richness, diversity and evenness were calculated for each stand. Soil analyses showed that stands could be differentiated geographically. Vegetation and soil relationships were explored using different ecological multivariate techniques. TWINSPAN classification resulted in four ecological groups in spring and four more groups in summer. DCA and DCCA clustered stands in a similar manner to the ecological groups extracted from TWINSPAN classification. Indicator species and correlated soil characteristics of each group were identified. Salinity, crop type, water availability, shade and human intervention are the major factors affecting the diversity and richness of the vegetation communities in Siwa Oasis cultivated land. Some of the species recorded are of high economic importance, highlighting a valuable opportunity to cultivate problematic soils with non-traditional crops.Cairo University Herbarium (CAI)Taeckholmia1110-741337120171201Taxonomic and molecular study on some Asian cultivars of Triticum aestivum L.16291193210.21608/taec.2017.11932ENMohamedIbrahimBotany Department, Faculty of Science, Ain Shams UniversityAl-SafaMohamedBotany Department, Faculty of Science, Ain Shams UniversitySamirTelebBotany Department, Faculty of Science, Zagazig UniversityShafikIbrahimAgricultural Genetic Engineering Research Institute (AGERI), Agricultural Research Center (ARC), GizaM.TantawyBotany Department, Faculty of Science, Ain Shams UniversityJournal Article20170430Wheat (Triticum aestivum L.) is one of the most vital food crops in the world. The differentiation of wheat cultivars is essential for farmers and breeders to evaluate the best quality and yield. Eight T. aestivum Asian cultivars were dealt with. The objectives of the present study are to extract data from the grain surface structures by aid of SEM and to determine genetic similarity/relatedness using Start Codon Targeted (SCoT) markers. The obtained exomorphic characters of the grains were diagnostic as they facilitated the differentiation between the studied Asian cultivars. Thirty primers were used and generated a total of 156 polymorphic loci with an average of 13 amplicons per primer. The mean of PIC and Rp have scored 0.24 and 4.6, respectively, which were at par of optimal values. Clustering and principal coordinate analyses were performed and revealed useful genetic similarities/relatedness between the studied cultivars. Trait-marker association through F-test analysis was also accomplished in this study. SEM and SCoT approaches were integral and efficient in assessing the taxonomic and genetic diversity among the cultivars under investigation. This study also investigated some Asian cultivars of the economic importance as resources for genetic improvement of T. aestivum L. in future breeding program between the developing countries.Cairo University Herbarium (CAI)Taeckholmia1110-741337120171201The Moss Flora of Ismailia Governorate, Egypt with Three New Records30401193310.21608/taec.2017.11933ENYasminHassanBotany Department, Faculty of Science, Suez Canal University0009-0000-4536-1385UsamaAbou-SalamaBotany Department, Faculty of Science, Ain Shams UniversityWafaaKamelBotany Department, Faculty of Science, Suez Canal UniversityElsayedaGamal EldinBotany Department, Faculty of Science, Suez Canal UniversityJournal Article20171011A total of 29 species of mosses are reported from Ismailia governorate, among these three species and two genera represent as a new records for Egypt. Bryoerythrophyllum and Oxystegus are a new genera to Egypt and the three species are: Bryoerythrophyllum inaequalifolium, Oxystegus tenuirostris and Trichostomum planifolium. Notes on habitats, reproductive organs and fruiting of the examined species are given.Cairo University Herbarium (CAI)Taeckholmia1110-741337120171231Bryophytes of Libya. II. Musci: an annotated checklist41511193410.21608/taec.2017.11934ENWagiehEl-SaadawiBotany Department, Faculty of Science, Ain Shams UniversityHanaaShabbaraBotany Department, Faculty of Science, Ain shams University, EgyptSaidYoussefBotany Deprtment, Faculty of Science, Benha University, EgyptManalKhalilBotany Department, faculty of science, Ain shams University, EgyptJournal Article20171130A list is given for the, hitherto, known moss flora of Libya. It includes 102 taxa, belonging to 45 genera in 16 families and 8 ordersĀ under class Bryopsida, and their distribution in 20 surveyed localities. Significant annotations are given regarding distribution of the taxa in Libya, in the Mediterranean area, dominance and rarity, old and new records, other relevant information and a list of synonyms.Cairo University Herbarium (CAI)Taeckholmia1110-741337120171231Some aspects of drought resistance in Citrullus colocynthis L. in the Egyptian deserts52661193510.21608/taec.2017.11935ENFawzySalamaDepartment of Botany and Microbiology, Faculty of Science, Assiut University, EgyptMonierAbd El-GhaniCairo University, Faculty of Science, Department of Botany and Microbiology, 12613 Giza, Cairo, EgyptNohaEl-TayehBotany Department, Faculty of Science, South Valley University, Qena, EgyptAhmedAmroDepartment of Botany and Microbiology, Faculty of Science, Assiut University, EgyptSaraEl-NaggarBotany Department, Faculty of Science, South Valley University, Qena, EgyptJournal Article20171015Samples of Citrullus colocynthis shoots were collected from nine stands during two seasons (winter and summer 2015) in two tributaries of Wadi Qena (W. El-Atrash and W. El-Ghuza) in the Eastern Desert of Egypt. Soil of these stands was characterized by slight alkalinity and low soil moisture and organic matter percentages. Soil macronutrients were arranged as Ca>K> Na>Cl>SO4>Mg>PO4. However, in C. colocynthis tissues, these nutrients accumulated in the following order: SO4 >K > Ca > Mg > Na> Cl > PO4. The plant chlorophyll contents (Chl. a and b), their ratio and their stability index (CSI) increased drastically during summer. Shoot accumulated SO4, PO4 and all cations during summer more than winter, except Cl that was higher during winter. Soluble sugars (SS) and soluble proteins (SP) increased during summer while total free amino acids were higher during winter. Data revealed that there were close relationships between the high SO4, K and Ca contents and the hot-dry conditions and the accumulation of SS and SP on the relatively hot-dry season However, this may be primarily related to metabolism of drought resistance in such desert plants. Correlations between plant and soil variables showed important positive relations between soil Ca, Mg and plant Mg and between soil SO4 with Ca and Mg of plant. Spatial distribution of C. colocynthis was the most important factor that controls WC, Na, K, Ca, Mg, Cl, PO4, CSI a, CSI b , Chl. a and b, Chl. a/b ratio, TAA, , SS and SP. While, the interaction between both factors, spatial and temporal, could be the promoter.