Stable and Novel Quantitative Trait Loci (QTL) Confer Narrow Root Cone Angle in an Aerobic Rice (Oryza sativa L.) Production System

Rice

Table 1 RCA (°) statistics for RILs derived from Sherpa/IRAT109 evaluated in four experiments

	GH	IWS19	WW20	IWS20
	n = 245	n = 250	n = 234	n = 234
	RILs
Min	68	111	114	110
Max	104	137	161	145
Mean	86**	123*	138**	127**
Single trial heritability	0.38	0.14	0.48	0.42
MET heritability	0.47	0.42	0.62	0.62
	Parents
IRAT109	80	117	127	118
Sherpa	88	125	141	129
	RCA Groups
Mean top 10% narrowest RCA	75	115	123	116
Mean top 10% widest RCA	97	131	152	137

RCA root cone angle, GH Glasshouse Experiment, IWS19 intermittent water stress 2019 experiment, WW20 well-watered 2020 experiment, and IWS20 intermittent water stress 2020 experiment; ** - P < 0.001; *- P < 0.05; MET- multi-environment trial