Yam Varieties

Duration of stage (days) ± s.e.

Incubation Period

Instar I

Instar II

Pre-pupa

Pupa

D. rotundata var. Pona

10.5 ± 0.3

7.6 ± 0.2

8.7 ± 0.2

2.3 ± 0.1

2.7 ± 0.1

D. rotundata var. Labreko

10.7 ± 0.2

8.0 ± 0.1

10.1 ± 0.4

2.4 ± 0.1

2.9 ± 0.1

D. rotundata var. Muchumudu

10.8 ± 0.3

9.7 ± 0.2

11.6 ± 0.1

2.8 ± 0.1

3.9 ± 0.1

D. alata var. Matches

11.0 ± 0.2

10.0 ± 0.2

11.8 ± 0.1

2.9 ± 0.1

4.0 ± 0.1

D. rotundata var. Dente

11.2 ± 0.2

11.5 ± 0.1

12.5 ± 0.2

3.3 ± 0.1

4.7 ± 0.1

lsd (5%)

0.71

0.4

0.5

0.2

0.2

CV (%)

5.0

3.5

3.4

4.3

3.5

P-value

0.330

0.031

0.017

0.028

0.019