Growth and Physiological Responses of Maize and Sorghum Genotypes to Salt Stress

Table 1

Summary of t-test results on the effect of salinity on chlorophyll fluorescence parameters (initial fluorescence 𝐹_𝑜, maximum fluorescence 𝐹_𝑚, variable fluorescence 𝐹_𝑣, and ratio of 𝐹_𝑣/𝐹_𝑚) of four maize genotypes (CUBA1, B73, B5C2, and BR1) when irrigated with nutrient solution at EC of 1.5 dS m⁻¹ or saline solution at EC of 8.0 dS m⁻¹ for 40 days (replication of 6).

Genotype	𝐹𝑜	𝐹𝑚	𝐹𝑣	𝐹𝑣/𝐹𝑚
Day 22
CUBA1	NS	NS	NS	NS
B73	NS	NS	NS	NS
B5C2	NS	0.0177	0.015	0.0231
BR1	NS	NS	NS	NS
Day 31
CUBA1	0.0029	0.0029	0.0085	NS
B73	<0.0001	NS	NS	0.0061
B5C2	0.0013	NS	0.0474	0.0007
BR1	NS	NS	NS	0.037
Day 37
CUBA1	0.0232	NS	NS	NS
B73	0.0112	NS	NS	NS
B5C2	0.0468	NS	NS	NS
BR1	NS	NS	NS	NS

NS: non-significant.