Validation of QTL mapping and transcriptome profiling for identification of candidate genes associated with nitrogen stress tolerance in sorghum

Table 1 Mean phenotypic values of parental lines (CK60, San Chi San), min, max, mean phenotypic values and standard deviation of RILs for different agronomic traits measured across two Normal-N and two Low-N treatments

Nitrogen treatment	Source of variation	Chl1	Chl2	Chl3	PH	AD	MC1	MC2	BY	GY	TGW	GS
Normal-N	Ck60	49.9	55.6	53.6	99	71.5	68.6	24.8	7.69	2.89	20.3	0.62
	San Chi San	46.6	52.7	48.3	150	66.3	65	19.5	14.6	6.25	31.6	0.76
	Min	39	42.3	27.6	77	55.1	57.8	13.4	4.21	0.79	17.4	0.16
	Max	58.1	64.5	63.6	220	80.1	76	52.1	21.2	7.32	30.9	2.88
	Mean	47.1	52.8	48.6	133	66	66.9	23.3	10.9	3.54	24.4	0.58
	Std	3.08	3.62	4.68	25.4	3.34	2.8	5.06	3.14	1.42	2.64	0.27
Low-N	Ck60	31.5	36.6	37.3	78	107	66.3	45.1	3.27	0.88	17.4	0.37
	San Chi San	33.2	37.3	25.8	123	84.7	61.7	29.2	6.07	3.08	26.8	0.66
	Min	26.4	26.6	18.7	62.1	64.8	57.2	17.8	2.82	0.04	14.2	0.04
	Max	40.6	47.6	45.4	170	110	72.2	60.2	12.6	4.99	31.3	1.06
	Mean	33.2	36.8	32	110	82.5	64.9	31.4	6.06	1.96	22.7	0.49
	Std	2.73	3.78	4.29	23.8	8.5	3.06	7.84	1.95	0.89	3.36	0.19

Nitrogen treatments: Normal-N and Low-N fields, trait values are averaged over two years (2011 and 2012) under NN and LN treatments respectively. Chl1, Chl2, Chl3 chlorophyll contents at (vegetative, anthesis, and maturity) stages, PH plant height (cm), AD days to anthesis, MC1% stover moisture content, MC2% head moisture content, BY biomass yield (t. ha⁻¹), GY grain yield (t. ha⁻¹), TGW, thousand grain weight (g), GS, grain-to-stover ratio (%)

ISSN: 1471-2229