Cannabis sativa L. - Botany and Biotechnology

Table 17.3

Comparison of some morphological and anatomical characteristics in pure diploid (2x) and tetraploid(4x) hemp plants. Values are mean

±

SE of

5 replicatesPloidylevel

Stomatal length(mm)

Stomatal width(mm)

Stomataldensity (mm

2 )

Leaf area (cm

2 ) Plant height

(cm)

Trichomdensity (mm

2 )

Shoot F.W (g) Root F.W (g)

2x

0.0192

±

0.00

b

0.0112

±

0.001

b

23.3

±

0.87

a

5.43

±

0.0789

b

35.6

±

0.39

a

8.6

±

0.24

a

5.83

±

0.18b 5.35

±

0.17

b

4x

0.0384

±

0.008a 0.0336

±

0.003a 13.8

±

0.75b

6.43

±

0.0789a 30.85

±

0.42b 6.07

±

0.14a

10.47

±

0.48a 7.66

±

0.44a

Same letters indicate no signi

ficant difference at

P

< 0.05

17 Induction of Polyploidy and Its Effect onCannabis sativaL. 377