Identification of salt-tolerant barley genotypes using multiple-traits index and yield performance at the early growth and maturity stages

Bulletin of the National Research Centre

Table 2 Predicted genetic gain for the effective traits in the MGIDI index under salinity stress conditions

Factor	Trait	Goal	h²	Selection gain (%)
FA1	Root K⁺ content	Increase	0.56	8.12
FA1	Root K⁺:Na⁺ ratio	Increase	0.65	3.08
FA1	Shoot Na⁺ content	Decrease	0.93	9.06
FA1	Root-to-shoot Na⁺ translocation	Decrease	0.87	− 7.81
FA2	Membrane stability index	Increase	0.63	− 2.81
FA2	Shoot fresh weight	Increase	0.77	0.64
FA2	Shoot K⁺ content	Increase	0.61	0.03
FA3	Relative water content	Increase	0.63	2.23
FA3	Stomatal conductance	Increase	0.61	0.15
FA4	Root Na⁺ content	Decrease	0.73	19.60
Total (Increase)				42.91
Total (Decrease)				− 10.62