extremely significantP < 0.01
However, the germination of SiGRF5- OE, SiGRF6- OE, and SiGRF8- OE lines was faster than that of Col-0 under 0.5 μM ABA by ∼9, 5, and 11% on average in the third day after seed imbibition, respectively, and reached an extremely significant differences ( P < 0.01) ( Supplementary Figure S2 ).