TABLE 3.

Effect of salinity on germination index of Apocynum venetum and Apocynum pictum seeds stored for 0, 1, or 2 years.

NaCl	Apocynum venetum			Apocynum pictum
(mmol L–1)	0	1	2	0	1	2
0	72.5 ± 4.7Aa	67.8 ± 1.6Ba	46.5 ± 1.7Ca	79.1 ± 3.0Aa	66.4 ± 0.7Ba	45.1 ± 1.5Ca
50	72.1 ± 3.5Aab	57.3 ± 0.8Bb	31.1 ± 1.1Cb	79.3 ± 2.3Aa	56.4 ± 1.4Bb	32.5 ± 1.1Cb
100	70.2 ± 3.5Aab	44.2 ± 0.5Bc	24.6 ± 1.5Cc	74.0 ± 3.2Aab	42.9 ± 1.5Bc	26.1 ± 1.4Cc
200	62.0 ± 4.2Aab	33.4 ± 0.8Bd	12.0 ± 0.6Cd	69.3 ± 3.7Aab	31.9 ± 1.5Bd	13.8 ± 1.5Cd
300	58.9 ± 5.8Ab	16.1 ± 1.4Be	5.0 ± 1.1Ce	63.5 ± 2.3Ab	16.8 ± 1.2Be	9.1 ± 0.6Ce
400	36.9 ± 4.9Ac	2.6 ± 0.1Bf	–	55.3 ± 3.1Ac	3.1 ± 0.8Bf	–
600	1.0 ± 0.6d	–	–	6.8 ± 1.0d	–	–

Different upper-case letters indicate significant difference between 0, 1, and 2 years at the same concentrations; different lower-case letters indicate significant difference among different concentrations of salinity at P < 0.05.