AMMI Stability Analysis and Estimation of Genetic Parameters for Growth and Yield Components in Cassava in the Forest and Guinea Savannah Ecologies of Ghana
Table 7
Ranking of 20 cassava genotypes based on storage root yield, AMMI stability value (ASV), and yield stability index (YSI) at 12 months after planting.
Fresh storage root yield (t/ha)
Genotype
Mean
Rank (A)
ASV
ASV rank (B)
YSI ()
YSI rank
MM96/1751
32.43
3
0.45
0.54
4
7
1
Pontisange
25.76
9
0.37
2
11
2
00/0203
31.29
4
1.33
8
12
3
ATR 007
24.29
11
0.25
0.31
1
12
4
UCC 2001/449
35.97
1
1.78
11
12
5
Biabasse
24.32
10
0.42
0.50
3
13
6
96/409
27.69
6
1.42
9
15
7
TME 435
26.60
7
0.66
1.44
10
17
8
I91934
27.94
5
1.50
2.06
13
18
9
ATR 002
22.36
13
0.96
0.59
6
19
10
NWA 004
22.79
12
0.96
7
19
11
CTSIA 110
16.41
16
0.45
2.10
0.54
5
21
12
96/1708
32.99
2
0.95
3.51
20
22
13
TME 419
26.53
8
1.12
2.66
19
27
14
CTSIA 45
21.15
15
2.01
2.42
14
29
15
CTSIA 112
21.24
14
2.06
2.48
16
30
16
CTSIA 65
12.38
19
1.48
0.88
1.78
12
31
17
CTSIA 230
13.52
18
2.04
1.54
2.45
15
33
18
CTSIA 72
14.17
17
2.09
0.66
2.52
17
34
19
CTSIA 48
11.87
20
2.13
0.83
2.57
18
38
20
Rt_yld = storage root yield (t/ha), IPCA [1] score = interaction principal component axis one score, IPCA [2] score = interaction principal component axis two score, ASV = AMMI stability value, and YSI = yield stability index.
