International Scholarly Research Notices

Research Article

Influence of Sulfur Induced Stress on Oxidative Status and Antioxidative Machinery in Leaves of Allium cepa L.

Table 2

Effect of variable sulfur supply on photoassimilatory pigments (chlorophyll a and b and total chlorophyll and carotenoid) in leaves of onion (Allium cepa L. var. Nasik-53) plants at 35 and 58 days after treatment.


Days after treatment		mM S L⁻¹ supply
Days after treatment		1.0	4.0	8.0

Chlorophyll: mg g⁻¹ fresh weight
35	Chl a	0.432 ± 0.013^a	0.803 ± 0.017^c	0.522 ± 0.019^b
	Chl b	0.211 ± 0.024^b	0.447 ± 0.018^a	0.242 ± 0.027^b
	Total chl	0.643 ± 0.031^a	1.250 ± 0.044^b	0.764 ± 0.053^c
	Chl a/b	2.047 ± 0.151^a	1.796 ± 0.160^b	2.157 ± 0.158^c
58	Chl a	0.209 ± 0.011^a	0.615 ± 0.021^c	0.331 ± 0.016^b
	Chl b	0.167 ± 0.014^a	0.376 ± 0.023^c	0.190 ± 0.022^b
	Total chl	0.376 ± 0.034^a	0.991 ± 0.039^c	0.521 ± 0.047^b
	Chl a/b	1.251 ± 0.103^a	1.635 ± 0.118^b	1.742 ± 0.112^c

Carotenoids: mg g⁻¹ fresh weight
35	Car	0.362 ± 0.012^b	0.482 ± 0.014^a	0.397 ± 0.015^c
35	Chl/car	1.776 ± 0.178^b	2.593 ± 0.172^a	1.924 ± 0.168^b
58	Car	0.211 ± 0.017^a	0.374 ± 0.016^c	0.230 ± 0.021^b
58	Chl/car	1.781 ± 0.163^a	2.649 ± 0.182^b	2.265 ± 0.160^c

Values are mean ± SE, . Data with different superscript letters in the same row indicate a significant difference at .