Salt stress inhibits germination and early seedling growth in cabbage (Brassica oleracea capitata L.).
Salinity induced inhibition in germination and early stages of cabbage (Brassica oleracea capitata L.) [two varieties (autumn cabbage and spring cabbage)] were measured in response to increasing NaCl concentration. The salinity (NaCl) concentrations in solution were 0 (control), 4.7, 9.4 and 14.1 dS m(-1). Different concentrations of salt stress had considerable effect on germination, germination rate (1/t50, where t50 is the time to 50% of germination), root and shoot lengths, root, shoot and plant fresh weight of cabbage. Final germination in cabbage (autumn cabbage and spring cabbage) showed significant inhibition with increasing salt stress up to 14.1 dS m(-1) NaCl. The required time for germination increased with increasing concentration of salt. The seedling growth was strongly inhibited by all salt levels, particularly at 14.1 dS m(-1). Furthermore Root growth was more affected then shoots growth by salt stress. Fresh weights of root, shoot and plant were also severely affected by different salinity treatments. Linear regression revealed a significant negative relationship between salinity and final germination, germination rate, root and shoot lengths and fresh weights of roots, shoots and plants.
Jamil
M
M
Department of Life Resources, College of Agriculture and Life Sciences, Sunchon National University, Suncheon 540-742, Korea.
Lee
Kyeong Bo
KB
Jung
Kwang Yong
KY
Lee
Deog Bae
DB
Han
Mi Suk
MS
Rha
Eui Shik
ES
D001937:Brassica / Q000254:growth & development*; D018525:Germination / Q000187:drug effects / Q000502:physiology*; D016014:Linear Models; D018517:Plant Roots / Q000187:drug effects / Q000254:growth & development; D036226:Seedlings / Q000187:drug effects / Q000254:growth & development*; D012965:Sodium Chloride / Q000032:analysis / Q000633:toxicity*; D014867:Water / Q000737:chemistry*
D014867:Water; D012965:Sodium Chloride