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Achenes of sunflower (cv Hi-Corn) were subjected for seven days to salinized solution culture containing 0, 50, 100 or 150 mol NaCl m −3 . Fresh weights of cotyledons and hypocotyl increased at all external salt regimes, although the increase was low at the highest salt level. Na + , Cl − and Ca 2+ concentrations in hypocotyls increased with time in all salt treatments...
A greenhouse experiment was conducted to assess the effect of salt stress on growth and metabolic changes in nodules and other plant parts of two leguminous species, Phaseolus vulgaris (salt sensitive) and Sesbania aculeata (salt tolerant) with the major objective if nodules play a vital role in salt tolerance. Plants of P. vulgaris subjected to 3.5 dS m −1 of NaCl and those of S. aculeata...
A greenhouse experiment was conducted to assess the effect of water stress on growth and metabolic changes in nodules and other plant parts of two leguminous species, Phaseolus vulgaris and Sesbania aculeata, with the major objective that nodules play a vital role in drought tolerance. Imposition of water deficit conditions for 45 days to 15-day-old plants of P. vulgaris and S. aculeata reduced shoot...
Nectar is considered a primary alimentary reward for a large variety of pollinators. Recent studies demonstrated that nectar may have other functions in addition to attracting pollinators. Mainly other two functions have been recognized: defense against microbial invasion and post-secretion modification of sugar profile. The floral nectar of Cucurbita pepo L. has been analyzed to confirm the presence...
Nipa palm (Nypa fruticans) is the only palm that grows in mangrove vegetation. We investigated the effect of salt stress on the growth and physiology of 6-month-old seedlings of Nipa palm exposed to different degrees of salt stress (as NaCl) in pot culture. The overall growth performance of Nipa palm was unaffected by mild salt stress (8.9−16.6dSm −1 ), whereas seedlings grown under severe...
Sesuvium portulacastrum is a promising halophyte well adapted to salt and to drought. However, no information in the literature was available about its antioxidant capacity. The objective of this study is to investigate the effects of water deficit applied alone or combined with salinity on some physiological parameters, proline and polyphenol accumulation, and antioxidant and antiradical activities...
We investigated the effects of NaCl on germination, germination rate, growth, proline content, polyamine levels (putrescine, spermidine and spermine) and total polyamines in Atriplex prostrata and Plantago coronopus. The seeds collected from Brujuelo (salt marshes, Jaén, southern Spain) were germinated under control (water) and saline conditions (50, 100, and 200mM NaCl) for 20days at 25°C. Salinity...
Salt and pH levels in coastal estuaries are very high. In our study, different degrees of interactive salt − alkali stress were simulated to determine the effects of interactive salt − alkali stress on the growth and osmotic regulation of Lolium multiflorum (group A experiment). In addition, Ca2+ solutions were prepared to examine the mitigative effects of exogenous Ca2+ on interactive salt − alkali...
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