EFFECTS OF ALKALI-STRESS ON UNGRAFTED AND GRAFTED CUCUMBER PLANTS: USING TWO TYPES OF LOCAL SQUASH AS ROOTSTOCK

摘要

This experiment was arranged as a factorial in the framework of a completely randomized design with two factors, rootstock (ungrafted cucumber, Cucurbita moschata and Cucurbita maxima) and bicarbonate [10Â mM sodium bicarbonate (NaHCO₃), AS; and 10Â mM sodium chloride (NaCl), SS] with three replications. Overall growth was affected by NaHCO₃ by increasing the pH of the nutrient solutions. C. moschata-grafted cucumber had the highest shoot length, node number, shoot diameter, leaf number, and fresh and dry mass of leaf, stem and root in SS- and AS-treated plants. When plants treated with AS, the maximum quantum yield, Fv/Fm, decreased significantly in leaves of all plants except in the young leaves of C. moschata-grafted cucumber compared with SS treated plants. Salt stress increased proline content in the leaves of C. maxima-grafted cucumbers compared to AS treated plants, significantly. It is concluded that using C. moschata rootstock can reduce deleterious effects of alkalinity stress on cucumber plants.View full textDownload full textKeywordsalkalinity, bicarbonate, Cucumis sativus , grafting, rootstockRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/01904167.2012.706680