. 2022 May 16;13:852704. doi: 10.3389/fpls.2022.852704

Table 3.

Chlorophyll content (SPAD value), Rubisco activity (μmol CO₂ mg⁻¹ protein min⁻¹), stomatal conductance (mmol CO₂ m⁻² s⁻¹), intercellular CO₂ concentration (μmol CO₂ mol⁻¹), net photosynthesis (μmol CO₂ m⁻² s⁻¹), leaf area (cm² plant⁻¹), and plant dry mass (g plant⁻¹) of mustard (B. juncea L.) grown with 200 μl L⁻¹ Eth and/or 2-mg Se kg⁻¹ soil in the presence or absence of 24-mg As kg⁻¹ soil at 30 DAS.

Treatments	Chlorophyll content	Rubisco activity	Stomatal conductance	Intercellular CO₂ concentration	Net photosynthesis	Leaf area	Plant dry mass
Control	32.8 ± 1.61^de	0.74 ± 0.039^ef	367 ± 11.4^d	258 ± 10.11^e	13.8 ± 0.66^ef	108.4 ± 5.4^e	2.20 ± 0.11^ef
As	22.2 ± 1.09^f	0.45 ± 0.022^g	282 ± 09.4^f	176 ± 07.01^f	7.80 ± 0.35^g	058.4 ± 2.8^f	0.89 ± 0.01^g
Eth	43.5 ± 2.12^ab	1.04 ± 0.053^b	362 ± 14.8^d	360 ± 14.6^b	22.4 ± 1.08^ab	154.5 ± 7.6^b	2.93 ± 0.15^b
Se	41.6 ± 2.07^bc	0.96 ± 0.048^bc	358 ± 14.2^de	354 ± 14.2^b	21.6 ± 1.04^bc	151.3 ± 7.4^b	2.78 ± 0.14^bc
Eth + As	35.4 ± 1.69^d	0.88 ± 0.043^cd	445 ± 17.2^b	324 ± 13.8^c	17.8 ± 0.84^d	138.5 ± 6.8^bc	2.45 ± 0.12^d
Se + As	34.8 ± 1.64^d	0.81 ± 0.04^cde	428 ± 16.3^bc	304 ± 12.6^cd	16.6 ± 0.79^de	132.4 ± 6.5^cd	2.38 ± 0.12^de
Eth + Se + As	47.5 ± 2.31^a	1.28 ±0.066^a	542 ± 21.6^a	389 ± 15.1^a	24.2 ± 1.18^a	184.6 ± 9.1^a	3.48 ± 0.18^a

Data are presented as treatment mean ± SE (n = 4). Data followed by same letter are not significantly different by LSD test at p < 0.05. As, arsenic; Eth, ethephon; Rubisco, ribulose, 1,5- bisphosphate carboxylase/oxygenase; Se, selenium.