Comparative Studies on Cellular Behaviour of Carnation (Dianthus caryophyllus Linn. cv. Grenadin) Grown In Vivo and In Vitro for Early Detection of Somaclonal Variation

Table 2

Comparison between mitotic index (MI) of in vivo and in vitro grown Dianthus caryophyllus root meristems.

Dianthus caryophyllus	MS media + hormone; (mg L^−1)	Age	Mitotic index, MI; (Percentage, %)
In vivo	—	4-day-old; (standard growth)	43.51 ± 2.14^f
In vitro	2 mg L^−1  NAA	1-day-old	41.20 ± 0.79^e
		2-day-old	40.23 ± 1.30^de
		3-day-old	37.35 ± 0.40^c
		4-day-old	32.32 ± 1.55^a
		1-week-old	39.20 ± 1.54^cd
		2-week-old	38.67 ± 1.35^cd
		3-week-old	43.77 ± 2.33^f
		4-week-old	38.62 ± 1.75^cd
		5-week-old	38.20 ± 3.24^c
		6-week-old	37.31 ± 1.27^c
		7-week-old	37.69 ± 0.66^c
		8-week-old	38.29 ± 1.87^c
		3-month-old	31.83 ± 0.81^a
		4-month-old	34.45 ± 0.70^b
		6-month-old	33.17 ± 0.78^ab

∗Means with different letters in the same column differ significantly at P < 0.05 by one-way ANOVA and Duncan’s multiple range test.