Responses of Seed Germination and Seeding Growth of Halophytes Lycium ruthenicum to Salt Stress
Lycium ruthenicum is one of the important halophytes in the Minqin oasis-desert transitional zone and has been planned to plant more in order to improve saline-alkalized soil and to increase the income of local farmers in the oasis-desert transitional zones in Xinjiang, Qinghai, and Gansu under the recognition of its nutritional and medicinal values in recent years.L.ruthenicum breeds mainly by cutting and seed propagation.However, the effects of salt stress on its seedling growth and seed germination in the laboratory and field are still unknown, and we carried out the research in seed germination and seeding growth of L.ruthenicum with different concentrations of salt solutions in 2014.The results showed that L.ruthenicum seed germination and seedling growth were better in the fresh water than in the salt water;the L.ruthenicum seed germination rates and cumulative number of germination in laboratory incubation study decreased with the increase of salinity;the L.ruthenicum seed germination rates and cumulative number of germination of field trials, are more in the freshwater solution than that in other salinity solutions;L.ruthenicum seeds germination and seedling growth were sensitive to salt stress, showing morphological and physiological inhibition characteristics, and the radicle/plumule ratio of different treatments with increasing salinity culture fluid increases.To reduce the salinity of surface soil when the seed germinated in the field, was a key to L.ruthenicum growth successfully.
Lycium ruthenicumgermination ratecumulative germination ratesalt stressradicle/plumule ratio
NETL
NSTL
万方数据
维普
