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Suaeda salsa,a typical leaf succulent euhalophyte,widely distributed in the saline soils of northern China.Salt ion accumulation in plant tissues plays an important role in osmotic regulation and the maintenance of water absorption to ensure normal growth.Much progress has been made in the mechanism of vegetable growth inhibition of nonhalophytes and growth enhancement of halophytes under salinity.However,little is known about responses of halophytic plant reproduction to salinity.The objective of this study was to investigate the effect of salinity on the reproductive development of Suaeda salsa under controlled conditions by determining the flower development,seed set and seed quality under non-saline and saline conditions.The results showed that the reproductive growth of S.salsa was stimulated by the presence of NaCl at certain concentrations and that 200 mM NaCl in the growth medium was optimal for reproductive growth.This was reflected in the increased of seed yield per plant,seed vigour,flower number and seed number per plant and per leaf axil,and 1000-seed weight,as well as the decreased of flower abortion percentage and anther abortion percentage in spite of the increased of Na+and Cl-contents in leaves,stems,floral parts and seeds and the decreased K+content in these organs.The results suggested that a certain concentration of NaCl in the growth environment markedly increases the seed number and quality of S.salsa primarily through increases in flower number and fertility.These factors play pivotal roles in the establishment of plant populations under saline conditions.