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[Objective] To research the physiological response of Carthamus tinctorius L.under saline-alkali stress,so as to screen,introduce and cultivate new varieties.[Methods] With C.tinctorius seeds as the research material,saline-alkali stress treatments by different concentrations of NaCl,NaHCO_3,NaCl and NaHCO_3(1∶1) mixed solutions were carried out.The saline-alkali tolerance abilities were researched by detecting the germination percentage,germination energy,relative germination percentage,vigor index and so on.[Results]With the concentration increase of Na Cl,NaHCO_3,Na Cl and NaHCO_3(1∶1) mixed solutions,the germination percentage,germination energy,relative germination percentage,radical length and seedling fresh weight of C.tinctorius seeds gradually declined.Under Na Cl stress,the salt-tolerance concentration,median inhibitory concentration and limiting concentration of C.tinctorius seeds were 9.663‰,14.721‰ and 19.779‰,respectively.Under NaHCO_3 stress,the salt-tolerance concentration,median inhibitory concentration and limiting concentration of C.tinctorius seeds were 10.573‰,14.515‰ and 18.457‰,respectively.Under the stress of NaCl and NaHCO_3(1∶1) mixed solution,the salt-tolerance concentration,median inhibitory concentration and limiting concentration of C.tinctorius seeds were 10.239‰,14.858‰ and 19.477‰,respectively.[Conclusions] C.tinctorius had relatively strong ability of saline-alkali tolerance.
[Objective] To research the physiological response of Carthamus tinctorius L.under saline-alkali stress, so as to screen, introduce and cultivate new varieties. [Methods] With C.tinctorius seeds as the research material, saline-alkali stress treatments by different concentrations of NaCl, NaHCO 3, NaCl and NaHCO 3 (1: 1) mixed solutions were carried out.The saline-alkali tolerance abilities were researched by detecting the germination percentage, germination energy, relative germination percentage, vigor index and so on. [Results] With the concentration increase of Na Cl, NaHCO 3, NaCl and NaHCO 3 (1: 1) mixed solutions, the germination percentage, germination energy, relative germination percentage, radical length and seedling fresh weight of C. tinctorius seeds are gradually declined. stress, the salt-tolerance concentration, median inhibitory concentration and limiting concentration of C.tinctorius seeds were 9.663 ‰, 14.721 ‰ and 19.779 ‰, respectively.Under NaHCO_3 stress, the salt-tolerance concentration, median inhibitory concentration and limiting concentration of C.tinctorius seeds were 10.573 ‰, 14.515 ‰ and 18.457 ‰, respectively.Under the stress of NaCl and NaHCO 3 (1: 1) mixed solution, the salt-tolerance concentration, median inhibitory concentration and limiting concentration of C.tinctorius seeds were 10.239 ‰, 14.858 ‰ and 19.477 ‰, respectively. [Conclusions] C.tinctorius had relatively strong ability of saline-alkali tolerance.