Abstract:

Abstract: The growth, relative water content, osmotic potential of all organ, contents of osmoregulation substance including proline and soluble sugar in leaves of two cucumber rootstocks, such as Cucurbita moschata hybrid ‘360-3 × 112-2’ and C. ficifolia seedlings were studied in hydroponic adding 80mmol?L-1 NaC1. The results showed that the growth of two tested materials seedling were inhibited significantly after 7 days under NaCl stress, salt tolerance of ‘360-3×112-2’ hybrid seedlings was higher than C. ficifolia, and decrease of relative water content was less, decrease of osmotic potential of all organ was more, increase of osmoregulation substance contents in leaves was more than that of C. ficifolia seedling.Those results can be concluded that the higher salt tolerance of ‘360-3×112-2’ hybrid under NaCl stress than C. ficifolia was closely related to its stronger osmotic adjustment ability.