. 2018 Sep 28;6:e5532. doi: 10.7717/peerj.5532

Table 2. The dynamic changes in chlorophyll a (Chl a), chlorophyll b (Chl b), and carotenoid (Car) contents of leaves of eight large-spike wheat lines and one multiple-spike cultivar during the developmental stages.

Line	Item (mg g⁻¹)	Developmental stages
		Jointing	Heading	Flowering	Grain filling
CK	Chl a	2.00 ± 0.15^ab	2.65 ± 0.35^abc	2.09 ± 0.11^ab	3.03 ± 0.12^ab
	Chl b	0.52 ± 0.05^a	0.64 ± 0.09^abc	0.55 ± 0.02^a	0.84 ± 0.01^a
	Car	0.42 ± 0.02^a	0.57 ± 0.06^a	0.39 ± 0.02^ab	0.56 ± 0.04^a
2005	Chl a	1.74 ± 0.12^ab	2.35 ± 0.08^bc	1.51 ± 0.08^e	2.36 ± 0.09^c
	Chl b	0.40 ± 0.03^bc	0.54 ± 0.02^c	0.37 ± 0.01^d	0.58 ± 0.01^c
	Car	0.39 ± 0.04^a	0.54 ± 0.01^a	0.31 ± 0.03^d	0.46 ± 0.02^b
2013	Chl a	1.61 ± 0.08^b	2.56 ± 0.08^abc	1.73 ± 0.07^de	2.63 ± 0.06^bc
	Chl b	0.37 ± 0.02^c	0.60 ± 0.01^abc	0.46 ± 0.02^bc	0.70 ± 0.03^b
	Car	0.38 ± 0.02^a	0.59 ± 0.01^a	0.33 ± 0.02^cd	0.53 ± 0.02^ab
2026	Chl a	1.91 ± 0.22^ab	2.86 ± 0.10^ab	2.15 ± 0.11^ab	2.69 ± 0.15^abc
	Chl b	0.42 ± 0.05^abc	0.68 ± 0.02^a	0.55 ± 0.03^ab	0.74 ± 0.04^ab
	Car	0.44 ± 0.04^a	0.60 ± 0.02^a	0.40 ± 0.02^ab	0.53 ± 0.03^ab
2036	Chl a	2.03 ± 0.09^a	2.73 ± 0.04^abc	1.68 ± 0.21^de	2.89 ± 0.10^ab
	Chl b	0.48 ± 0.02^abc	0.64 ± 0.01^abc	0.40 ± 0.06^cd	0.79 ± 0.04^ab
	Car	0.44 ± 0.02^a	0.57 ± 0.01^a	0.31 ± 0.03^d	0.52 ± 0.02^ab
2037	Chl a	2.04 ± 0.09^a	2.91 ± 0.03^a	1.96 ± 0.09^bcd	2.68 ± 0.15^abc
	Chl b	0.50 ± 0.02^ab	0.70 ± 0.01^a	0.52 ± 0.02^abc	0.76 ± 0.05^ab
	Car	0.44 ± 0.02^a	0.59 ± 0.00^a	0.35 ± 0.01^bcd	0.48 ± 0.01^ab
2038	Chl a	1.89 ± 0.10^ab	2.25 ± 0.15^c	2.03 ± 0.12^abc	2.74 ± 0.05^abc
	Chl b	0.46 ± 0.02^abc	0.57 ± 0.03^bc	0.53 ± 0.02^abc	0.75 ± 0.03^ab
	Car	0.39 ± 0.02^a	0.45 ± 0.03^b	0.37 ± 0.02^abc	0.49 ± 0.03^ab
2039	Chl a	2.01 ± 0.02^ab	2.73 ± 0.17^abc	1.97 ± 0.04^abcd	2.68 ± 0.15^abc
	Chl b	0.47 ± 0.00^abc	0.67 ± 0.05^abc	0.50 ± 0.03^abc	0.74 ± 0.03^ab
	Car	0.43 ± 0.01^a	0.56 ± 0.03^a	0.37 ± 0.01^abc	0.49 ± 0.03^ab
2040	Chl a	2.12 ± 0.06^a	2.72 ± 0.04^abc	2.29 ± 0.05^a	3.09 ± 0.20^a
	Chl b	0.50 ± 0.01^ab	0.67 ± 0.02^abc	0.58 ± 0.01^a	0.84 ± 0.06^a
	Car	0.44 ± 0.01^a	0.57 ± 0.01^a	0.42 ± 0.02^a	0.56 ± 0.03^a

Notes.

Values are means ± SE (n = 3); means followed by different small letters in the same column are significantly different at P < 0.05 according to LSD test.