Response to Direct Selection against Drought Stress in Black Cumin (Nigella sativa L.)

Table 3

Comparison of black cumin seed germination and changes in related seedling growth parameters to nonprimed (control 1) and hydro-primed seeds (control 2) with PEG 6000-induced osmo-primed pretreated seeds for 36 h.

Priming (pretreatment)	Osmo stress (post-treatment)	Germination index (%)	Germination stress tolerance index (%)	Speed germination (%)	Final germination percentage (%)	Seedling vigor index (%)	Mean germination time (d)	Shoot length (cm)	Root length (cm)	Seedling length (cm)	Seedling fresh weight (mg)	Seedling dry weight (mg)
Nonprimed seeds	Control treatment 1	9.5	100.00	8.1	100.0	9.1	2.6	4.4	4.7	9.1	2.18	0.19
	−0.05 MPa of PEG	11.3	104.90	11.1	98.3	8.1	2.2	4.0	4.2	8.2	2.05	0.17
	−0.15 MPa of PEG	9.9	93.63	9.6	91.7	6.6	2.3	3.5	3.7	7.2	1.71	0.16
Hydro-primed seeds	Control treatment 2	13.9	107.84	15.5	98.3	6.7	1.6	3.7	3.1	6.8	1.58	0.18
	−0.05 MPa of PEG	12.4	101.47	13.4	95.0	5.8	1.8	3.0	3.1	6.1	1.90	0.20
	−0.15 MPa of PEG	5.1	54.41	4.4	55.0	1.9	2.6	1.8	1.8	3.5	0.84	0.18
−0.1 MPa of PEG	Control	16.1	114.22	18.7	98.3	7.7	1.1	4.6	3.2	7.8	2.42	0.21
	−0.05 MPa of PEG	10.6	98.04	10.9	98.3	7.4	2.3	4.1	3.5	7.5	1.84	0.22
	−0.15 MPa of PEG	6.0	60.78	5.9	65.0	1.9	2.7	1.4	1.6	2.9	0.50	0.16
−0.2 MPa of PEG	Control	16.4	115.69	19.2	96.7	6.8	1.0	3.009	3.2	7.0	2.09	0.20
	−0.05 MPa of PEG	13.3	105.88	14.8	98.3	6.5	1.7	3.4	3.2	6.6	1.92	0.23
	−0.15 MPa of PEG	7.7	77.94	7.5	75.0	2.3	2.4	1.6	1.5	3.1	0.83	0.17
−0.4 MPa of PEG	Control	11.5	96.08	12.5	95.0	8.4	1.9	4.1	4.8	8.9	2.05	0.17
	−0.05 MPa of PEG	8.8	83.82	9.3	90.0	6.0	2.5	3.2	3.5	6.7	1.71	0.16
	−0.15 MPa of PEG	4.6	45.59	4.4	65.0	1.6	3.2	0.9	1.6	2.5	0.72	0.14
LSD ()		0.3512	3.5135	0.3017	3.7232	0.2796	0.0767	0.1117	0.0635	0.1263	0.0422	0.0050

Significant at .