Table 1. Leaf color related traits of B73, Mo17 and Syn4 RIL population and their heritabilities under low temperature conditions.

Traits (cold)	Parents		IBM RIL lines
	B73	Mo17	Range	Mean	CV(%)	H2
Proportion of green tissue*	75.43±3.09	99.00±0.73	74.4–100.0	93.90	7.13	91.8%
Visual scoring of stress tolerance*	1±0	2.89±0.33	1.0–3.0	2.40	29.78	94.6%
Absorbance at 663nm*	0.46±0.04	0.88±0.05	0.37–0.93	0.73	23.85	88.5%
Absorbance at 645 nm*	0.35±0.07	0.57±0.04	0.29–0.60	0.47	17.52	82.5%

The traits designated with stars showed statistically significant differences between Mo17 and B73 parents (Student t-test).