Nutraceuticals, phytochemicals, and radical quenching ability of selected drought-tolerant advance lines of vegetable amaranth

Table 3 The coefficient of correlation for phytopigments, ascorbic acid, β-carotene, TP, TF, RQA (DPPH), and RQA (ABTS⁺) of four selected drought-tolerant vegetable amaranth

Traits	Chl b (μg g^− 1 FW)	Chl ab (μg g^− 1 FW)	BC (ng g^− 1 FW)	BX (ng g^− 1 FW)	BL (ng g^− 1 FW)	β-Car (mg 100 g^− 1 FW)	AA (mg 100 g^− 1 FW)	TP (μg g^− 1 FW)	TF (μg g^− 1 DW)	RQA (DPPH) (μg g^− 1 DW)	RQA (ABTS⁺) (μg g^− 1 DW)
Chla (μg g^− 1 FW)	0.88**	0.93**	0.96**	0.95**	0.88**	−0.82**	−0.015	0.88**	0.87**	0.88**	0.95**
Chlb (μg g⁻¹ FW)		0.95**	0.87**	0.95**	0.89**	−0.67	−0.018	0.81**	0.85**	0.92**	0.89**
Chlab (μg g⁻¹ FW)			0.82**	0.96**	0.87**	−0.85**	−0.014	0.86**	0.88**	0.86**	0.93**
BC (ng g⁻¹ FW)				0.97**	0.95**	−0.86**	− 0.116	0.85**	0.87**	0.89**	0.88**
BX (ng g⁻¹ FW)					0.97**	−0.85**	−0.123	0.83**	0.81**	0.85**	0.92**
BL (ng g⁻¹ FW)						−0.89**	− 0.129	0.89**	0.86**	0.87**	0.89**
β-Car (mg 100 g⁻¹ FW)							0.76*	0.89**	0.89**	0.92**	0.96**
AA (mg 100 g⁻¹ FW)								0.86**	0.85**	0.87**	0.88**
TP (μg g⁻¹ DW)									0.85**	0.88**	0.99**
TF (μg g⁻¹ DW)										0.85**	0.89**
RQA (DPPH) (μg g⁻¹ DW)											0.97**

Chl a Chlorophyll a; Chl b Chlorophyll b; Chl ab Chlorophyll ab; BC Betacyanins; BX Betaxanthins; BL Betalains; β-Car Beta-carotene; AA Ascorbic acid; RQA (DPPH) Radical quenching ability (TE); RQA (ABTS⁺) Radical quenching ability (TE); TP Total polyphenols (GAE); TF Total flavonoids (RE); ** Significant at 1% level

ISSN: 1471-2229