Effects of Saline Alkali Stress on Seed Germinationof Three Mulberry Varieties
Zhao Dongxiao
Dong Yaru
Du Jianxun
Chen Chuanjie
Wang Zhaohong
Sun Jingshi
Liang Mingzhi
Abstract：Saline alkali stress is one of the major abiotic stress in plants.In this study, two kinds of neutral salts (NaCl and Na2SO4) and two kinds of alkaline salts (NaHCO3 and Na2CO3) were mixed at 1∶1, and five different saline concentrations were set to dispose of three varieties of mulberry seeds.The germination rate, germination potential, relative germination rate, relative germination potential, germination index, relative salt damage index and cotyledon growth rate were measured.The results showed that alkaline salt stress had stronger inhibitory effect on seed germination and cotyledon growth than that of neutral salt stress.The low concentration of neutral salt solution (less than 50 mmol/L) could promote the germination of Guiyou 12, but when the concentration of salt solution was higher than 50 mmol/L, it became an inhibitory effect.Under the neutral salt stress, Guiyou 12 had the highest tolerance, followed by Guiyou 62, and 8036× Nong 14 was the worst;under the alkaline salt stress, Guiyou 62 had the highest tolerance, followed by Guiyou 12, and 8036× Nong 14 was the worst.
Keywords：MulberryVarietySaline alkali stressSeed germination
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 49-55 )