MA Yanjun, NI Qiang, YANG Yongyi, et al. Effect of Salt Stress on Seed Germination and Seedling Growth of Astragalus Mongholicus[J]. Bulletin of Soiland Water Conservation, 2018, 38(3): 106-111.
DOI:
MA Yanjun, NI Qiang, YANG Yongyi, et al. Effect of Salt Stress on Seed Germination and Seedling Growth of Astragalus Mongholicus[J]. Bulletin of Soiland Water Conservation, 2018, 38(3): 106-111. DOI: 10.13961/j.cnki.stbctb.2018.03.017.
Effect of Salt Stress on Seed Germination and Seedling Growth of Astragalus Mongholicus
[Objetive] In order to provide the theoretical basis for Astragalus mongholicus introduction
domestication and planting in saline land
the seed germination and seedling growth of A. mongholicus were investigated in different concentrations of NaCl
Na2SO4 and NaHCO3 treatment to understand the effect salt stress on A. mongholicus.[Methods] Seed germination test were conducted in germination box
and the germination rate
germination potential
relative salt injury rate
root length
seedling height and ratio of root and stem of A. mongholicus were measured in different concentrations of NaCl
Na2SO4 and NaHCO3 treatments.[Results] ① A. mongholicus seed germinated normally under the salt stress with the concentration of NaCl<0.2%
Na2SO4<0.6% and NaHCO3<0.3%
and the germination rate and germination potential were all greater than that of control treatment
vice versa. ② The relative salt damage rate of A. mongholicus seed was negative at low concentration (NaCl 0.6%
Na2SO4 0.8%
NaHCO3 0.3%) as it promoted the seed germination
while it inhibited the germination of A. mongholicus when the concentration was higher. ③ The stem length
root length and ratio of root and stem of A. mongholicus seedling increased with the increase of salt concentration. When the concentration of NaCl and Na2SO4 were 0.4%
0.6% and 0.6%
0.3%
respectively
the stem length and root length of A. mongholicus seedling were the maximum. While the stem length and root length of A. mongholicus seedling started to decrease as the concentration of NaCl and Na2 SO4 increased. The maximum ratio of root and stem was 1.658
1.709 and 1.291
respectively
when the concentrations of NaCl
Na2SO4 and NaHCO3 was 0.6%
0.8% and 0.3% respectively
while it decreased when the concentrations increased.[Conclusion] The seed and seedling of A. mongholicus could germinate and grow normally under salt stress with the concentrations of NaCl<0.6%
Ayarpadikannan S, Chung E S, So H A, et al.Overexpression of SaRBPl enhances tolerance of Arabidopsis to salt stress[J]. Plant Cell, Tiss Organ Cult(PCTOC). 2014,118(2):327-338.
Al-Karaki C N. Germination, sodium, and potassium concentrations of Barley seeds as influenced by salinity[J]. Journal of Plant Nutrition, 2001,24(3):511-522.
Huang Zhenying, Zhang Xinshi, Gutterman Y, et al. Influence of light, temperature, salinity and storage on seed germination of
Haloxylon ammodendron
. Journal of Arid Environments, 2003,55(3):4563-464.
Bayuelo-Jimenez J S, Craig R, Lynch J P, et al. Salinity tolerance of Phaseolus species during germination and early seedling growth[J]. Crop Science, 2002,42(5):1584-1594.
Croser C, Renault S, Franklin J, et al. The effect of salinity on the emergence and seedling growth of Picea mariane, Piceaglauca, and Pinusbanksiana[J]. Environmental Pollution, 2001,115(1):9-16.