Salt-alkali Tolerance Comparison of Three Orchard Groundcover Species
LIU Lijuan
CHEN Wenshuang
JIANG Qianqian
MOU Wencai
Abstract：Using wild peas,ryegrass,and alfalfa as experimental materials,the effects of compound salt-alkali stress(mixed with NaCl and NaHCO3 in a ratio of 1∶1)on seed germination(germination rate,potential,index)and seedling growth(growth rate,malondialdehyde content,chlorophyll content,and root activity)of three orchard grass species were studied,and salt-alkali tolerant grass species were screened.The results showed that during the seed germination period,with the increase of salt-alkali concentration,the average germination time of grass seeds showed an extended trend,while indicators such as germination rate,germination potential,and germination index showed a downward trend;Under the same salt alkali concentration,ryegrass showed the strongest resistance,whereas alfalfa does not germinate.During the seedling growth period,with the increase of salt-alkali concentration,the aboveground and underground growth,chlorophyll content,and root activity of the three grass species showed a downward trend,while the content of malondialdehyde showed an upward trend.Overall,ryegrass showed the strongest resistance to complex salt-alkali stress,followed by wild peas,and alfalfa being the weakest.
Keywords：orchard grasssalt-alkali stressgrass speciesseed germinationseedling growth
Publication Date：2025-06-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 51-56 )