Table 2.

Descriptive statistics of agronomical and physiological parameters recorded in Nagina 22/IR 64 RIL population and bulks in 2014

	Plant height		Panicle length		Tiller number		SPAD		Spikelets/panicle		Spikelet sterility		Single plant yield		SSI
	IC	RS	IC	RS	IC	RS	IC	RS	IC	RS	IC	RS	IC	RS
Nagina 22	113.8	94.9	21.5	20.1	10	8.2	37.3	33.7	164.5	134	6.2	24	14.2	12.5	0.1
IR 64	90.1	63.7	23.5	20.1	8.7	8.3	41	36.7	156	119	8.1	91	17.2	1.6	1
Population
Range	71.3–161	49–133	19.5–29.5	14.7–87.7	3.8–17.3	3.7–12.3	29.3–54.4	28–47.8	84.3–428.3	13.7–247.3	4.9–32.5	20.1–99.8	1.2–52.9	0.01–10.6	0.1–1.1
Mean	124.9	90.54	24.35	22.01	8.03	6.97	37.31	35.12	168.86	85.52	17.96	85.76	14.69	1.56	0.96
SE mean	0.93	0.92	0.12	0.38	0.11	0.09	0.21	0.17	2.71	1.84	0.3	1.01	0.55	0.1	0.01
Var	242.83	210.7	4.2	35.54	3.55	2.21	12.95	6.82	2068.34	843.38	22.31	254.24	74.31	2.57	0.04
SD	15.58	14.52	2.05	5.96	1.88	1.49	3.6	2.61	45.48	29.04	4.72	15.94	8.62	1.6	0.19
CV	0.12	0.16	0.08	0.27	0.23	0.21	0.1	0.07	0.27	0.34	0.26	0.19	0.59	1.03	0.2
41 RILs
Mean	122.1	88.1	24	20.7	8.2	6.9	37.4	34.9	160.6	86.8	17.6	80.4	14.3	1.1	1
Range	84.2–148.7	51.3–119.7	21–26.5	16.3–25.7	5.5–12	4.7–9.3	29.3–46.1	30.3–42.5	103.7–255	42.3–181	9.2–32.5	30.5–99.6	1.2–26.5	0.04–4.03	0.21–1.12
SE	2.47	2.34	0.24	0.35	0.27	0.2	0.7	0.46	6.19	4.28	0.8	3.3	1.03	0.19	0.04
CV	0.13	0.16	0.06	0.1	0.21	0.18	0.12	0.08	0.25	0.3	0.28	0.25	0.43	1.03	0.22
TB	123.4	96.6	24	22.6	7.8	6.4	35.9	35.5	173.5	84.3	18.8	49.6	12.9	2.9	0.8
SB	118.1	84.8	23.8	20.1	8.4	7.8	37.2	34.1	163.3	87.8	16.9	91.6	15.4	0.4	1.1
RB	126	84.6	24.2	21	8.5	7	38.7	35	183.9	101.4	19.8	85.5	16.9	0.7	1

SSI Spikelet sterility index, IC Irrigated control, RS Reproductive stage drought stress, TB Tolerant bulk, SB Susceptible bulk, RB Random bulk, SE Standard Error, CI Confidence interval, SD Standard deviation, CV Coefficient of variation