Effect of salinity on yield and yield components of two species of borage (Borago officinalis L. & Echium amoenum Fisch & C.A. Mey.)

This study conducted in dry climatic condition of Yazd provinces, Iran withtwo species of Borage (Borago officinalis L. and Echium amoenum Fisch & C.A.Mey.) and three levels of irrigation salinity including 2, 5 and 8 dS.m-1 during2018-19. The experiment was arranged as RCB in split plot design (salinity asmain plots and species as sub plots) with three replications. A germination testconducted with different levels of salinity including tap water as control and 3,6, 9, 12, 15 and 18 dS.m-1. Results showed that all measurements such as plantheight, dry and wet yields of organs was affected by salinity. Species treatmentwas significant in all measurements except dry leaf weight and interactions ofsalinity × species was significant in all except stem wet yield. The B.officinalis hadhigher wet yields of leaf and stem due to higher absorption of water and storageof water in leaves and stems, but E.amoenum had higher dry yields in all organs.Otherwise E. amoenum had much more yields in flower head and flower in bothconditions.

کلیدواژه ها:

salt stress ، borage ، flower head ، flower