Radiation Processed Carrageenan Improves Plant Growth, Physiological Activities, and Alkaloids Production in Catharanthus roseus L.

Table 3

Effect of six foliar concentrations of irradiated carrageenan (ICR) on the total content of chlorophyll and carotenoids of Catharanthus roseus L. at 120 and 150 DAP. Means within a column followed by the same letter(s) are not significantly different ().

Treatments (mg L^−1)	Total chlorophyll content (mg g^−1 FW)		Total carotenoids content (mg g^−1 FW)
	120 DAP	150 DAP	120 DAP	150 DAP
ICR 0	1.032^e	1.214^e	0.185^a	0.195^d
ICR 20	1.065^d	1.278^d	0.188^a	0.199^c
ICR 40	1.098^c	1.328^c	0.184^a	0.199^c
ICR 60	1.135^b	1.374^b	0.185^a	0.200^c
ICR 80	1.180^a	1.415^a	0.186^a	0.209^a
ICR 100	1.148^b	1.380^b	0.185^a	0.204^b
LSD at 5%	0.030	0.034	NS	0.003