Effect of NaCl and Na2SO4 salinities and light conditions on seed germination of purslane (Portulaca oleracea Linn.)

Abstract

Portulaca oleracea Linn., commonly known as purslane, is a C 4 succulent and salt tolerant weed. The present work was focused on the seed germination of purslane under different levels of NaCl and Na 2 SO 4 (25, 50, 100 and 200 mM) salinity along with continuous dark and light conditions. Results indicated that both salinity treatments had negative impact on seed germination under both light conditions. Interestingly, seed germination percentage of purslane was high under both salinity treatments and continuous light conditions as compared to dark conditions. The differential response of purslane’s seed germination under NaCl and Na 2 SO 4 salinity and light conditions suggests weediness of this plant under adverse environmental conditions. The present work might be helpful for agricultural practices dealing with the problem of this weed.