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Full-Text Articles in Life Sciences
Effects Of Salinity: Calcium Interaction On Growth And Nucleic Acid Metabolism In Five Species Of Chenopodiaceae, Essam E. M. Abo-Kassem
Effects Of Salinity: Calcium Interaction On Growth And Nucleic Acid Metabolism In Five Species Of Chenopodiaceae, Essam E. M. Abo-Kassem
Turkish Journal of Botany
Seed germination, seedling growth, and some enzyme activity of nucleic acid metabolism were studied in 5 members of Chenopodiaceae [Beta vulgaris L., Chenopodium quinoa Willd., Spinacea oleracea L., Allenrolfia occidentalis (S.Watson) Kuntze, Atriplex hortensis L.] under NaCl salinity alone or combined with 0.5 mM CaSO_4. High salinity delayed radical emergence and decreased germination percentage in all plants. Combined CaSO_4 reduced inhibition of seed germination in B. vulgaris, S. oleracea, and A. hortensis, but increased it in C. quinoa and A. occidentalis. CaSO_4 reduced plant growth to a greater degree than high salinity did. High salinity decreased total nucleic acid content …
Germination And Seedling Behaviours Of Seeds Of Peltophorum Pterocarpum D.C.Baker Ex K.Heyne Growing Under Motor Vehicle Emission, Muhammad Shafiq, Muhammad Zafar Iqbal
Germination And Seedling Behaviours Of Seeds Of Peltophorum Pterocarpum D.C.Baker Ex K.Heyne Growing Under Motor Vehicle Emission, Muhammad Shafiq, Muhammad Zafar Iqbal
Turkish Journal of Botany
Motor vehicle emission showed toxic effects on seed germination and seedling growth of Peltophorum pterocarpum D.C.Baker ex K.Heyne. Germination and growth of P. pterocarpum seeds were significantly (P < 0.05) affected in the seeds collected from the polluted areas as compared to the less polluted areas. A higher percentage of decrease in seed germination was found for the seeds collected from the extremely polluted area, followed by very much polluted, polluted, and a little polluted areas as compared to the unpolluted area (control). Seedling and root lengths were also highly decreased for the seeds of the same species collected from the extremely polluted area as compared to the control. A high percentage of seedling dry weight was found for the seeds of the same species collected from the extremely polluted area (62%), followed by very much polluted area (58%), polluted area (38%), and a little polluted area (28%) as compared to the control. According to the tolerance test, seedling growth of P. pterocarpum showed the lowest percentage of tolerance in the samples collected from the extremely polluted area (53%), followed by very much polluted area (71%), polluted area (89%), and a little polluted area (92%) as compared to the campus.