Figure 1
Supplementary Figure S1.
Supplementary Figure S2.
Supplementary Figure S3.
Supplementary Figure S4.
Supplementary Figure S5.
Supplementary Figure S6.
Supplementary Figure S7.
Supplementary Figure S8.
Supplementary Figure S9.
Supplementary Figure S10.
Means for anthocyanin content (mg · 100 g−1 FW) and carotenoid content (mg · 100 g−1 FW) of 10 potato genotypes evaluated at three locations_
| Genotypes | Anthocyanin (mg · 100 g−1 FW) | Carotenoid (mg · 100 g−1 FW) | ||||||
|---|---|---|---|---|---|---|---|---|
| L1 | L2 | L3 | Mean | L1 | L2 | L3 | Mean | |
| SR 2022/01 | 5.91 c | 4.41 cd | 7.03 a | 5.78 C | 12.39 ab | 11.27 ab | 13.05 a–c | 12.24 A–C |
| KS 2022/02 | 2.00 e | 10.99 b | 1.88 cd | 4.96 CD | 11.61 ab | 11.63 ab | 9.95 d | 11.06 BC |
| SR 2022/03 | 1.50 e | 12.99 b | 6.90 a | 7.13 B | 11.14 ab | 10.72 ab | 9.87 d | 10.58 C |
| SR 2022/04 | 1.55 e | 2.77 d | 1.04 d | 1.78 G | 10.29 b | 12.07 ab | 9.87 d | 10.75 C |
| SR 2022/05 | 0.98 e | 6.88 c | 6.79 a | 4.77 CD | 12.19 ab | 14.02 a | 9.98 d | 12.06 A–C |
| SR 2022/06 | 3.83 d | 4.17 cd | 3.19 bc | 3.74 EF | 12.57 ab | 13.34 a | 11.98 b–d | 12.63 AB |
| KS 2022/07 | 6.76 bc | 22.71 a | 3.54 b | 11.00 A | 10.85 b | 13.09 a | 13.97 ab | 12.63 AB |
| KS 2022/08 | 1.93 e | 3.50 d | 2.92 bc | 2.79 FG | 13.22 ab | 8.69 b | 13.04 a–c | 11.65 A–C |
| SR 2022/09 | 7.82 b | 2.83 d | 2.83 d | 4.47 DE | 14.22 a | 10.93 ab | 11.22 cd | 12.12 A–C |
| SR 2022/10 | 10.32 a | 10.98 b | 2.25 b–d | 7.85 B | 11.63 ab | 12.43 ab | 14.63 a | 12.90 A |
| Means | 4.26 B | 8.22 A | 3.83 B | 12.01 | 11.82 | 11.75 | ||
| F-test | ** | ** | ** | ** | ** | ** | ||
| C.V. (%) | 17.18 | 21.65 | 24.07 | 15.74 | 16.89 | 10.60 | ||
Mean squares for number for (storage root · plant−1), storage root dry weight (t · ha−1), harvest index, anthocyanin content (mg · 100 g−1 FW) and carotenoid content (mg · 100 g−1 FW) of 10 sweet potato genotypes evaluated across three locations_
| Source of variance | df | Number of storage roots per plant (storage root · plant−1) | Storage root dry weight (t · ha−1) | Harvest index | Anthocyanin (mg · 100 g−1 FW) | Carotenoid (mg · 100 g−1 FW) |
|---|---|---|---|---|---|---|
| Location (L) | 2 | 3.14**(41.81) | 5.74** (33.88) | 0.348** (78.55) | 175.68** (59.77) | 0.54 ns(2.52) |
| Error (a) | 6 | 0.03 (0.40) | 0.01 (0.06) | 0.001 (0.23) | 0.84 (0.28) | 4.16 (19.41) |
| Genotype (G) | 9 | 1.88**(25.03) | 7.39** (43.63) | 0.052** (11.74) | 64.59** (21.97) | 6.09*(28.40) |
| L × G | 18 | 2.40**(31.96) | 3.77** (22.26) | 0.041** (9.26) | 51.33** (17.46) | 7.61**(35.49) |
| Error (b) | 54 | 0.06 (0.80) | 0.03 (0.17) | 0.001 (0.22) | 1.51 (0.52) | 3.04 (14.18) |
| Total | 89 | |||||
| C.V.% (a) | 7.76 | 5.24 | 2.25 | 16.92 | 17.20 | |
| C.V.% (b) | 11.84 | 9.77 | 7.33 | 22.66 | 14.69 |
Ten genotypes of sweet potato used in the experiment, their local name and characteristics_
| Accession number | Local name | Characteristics |
|---|---|---|
| SR 2022/01 | Beniharuka | Purple white skin, light yellow central parenchyma |
| KS 2022/02 | Pakkadmadpor | Red skin, soft white central parenchyma |
| SR 2022/03 | Moangpurple | Dark purple skin, light purple central parenchyma |
| SR 2022/04 | Moangmaitaiwan | Dark purple skin, dark purple central parenchyma |
| SR 2022/05 | Moangokinava | Purple skin, dark purple central parenchyma |
| SR 2022/06 | Moangharumurazaki | Purple skin, purple central parenchyma |
| KS 2022/07 | Somporsidang | Red skin, orange central parenchyma |
| KS 2022/08 | Sweetthijong | White skin, soft white central parenchyma |
| SR 2022/09 | Somokinava | Red skin, dark orange central parenchyma |
| SR 2022/10 | Annoimo | Red skin, dark yellow central parenchyma |
Physical and chemical properties of the soil samples of three locations_
| Soil properties | L1-RMUTI | L2-Chomphra | L3-Sanom |
|---|---|---|---|
| Physical properties | |||
| Sand (%) | 77.79 | 62.03 | 79.47 |
| Silt (%) | 18.19 | 29.52 | 13.13 |
| Clay (%) | 4.02 | 8.45 | 6.80 |
| Texture class | Loamy sand | Sandy loam | Loamy sand |
| Chemical properties | |||
| pH | 5.49 | 5.22 | 5.30 |
| Electrical conductivity (dS · m−1) | 0.041 | 0.028 | 0.055 |
| Cation-exchange capacity (cmol · kg−1) | 3.80 | 4.40 | 4.80 |
| Organic matter (%) | 0.50 | 1.09 | 0.81 |
| Total N (%) | 0.027 | 0.051 | 0.040 |
| Available P (mg · kg−1) | 93.75 | 23.50 | 8.75 |
| Exchangeable K (mg · kg−1) | 44.37 | 67.65 | 11.42 |
| Exchangeable Ca (mg · kg−1) | 113.93 | 189.30 | 36.31 |
| Exchangeable Mg (mg · kg−1) | 39.19 | 52.93 | 23.27 |
Means for number of storage roots per plant, storage root dry weight (t · ha ‘) and harvest index of 10 potato genotypes evaluated at three locations_
| Genotypes | Number of storage roots per plant (storage root · plant−1) | Storage root dry weight (t · ha−1) | Harvest index | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L1 | L2 | L3 | Means | L1 | L2 | L3 | Means | L1 | L2 | L3 | Means | |
| SR 2022/01 | 2.0 cd | 1.3 cd | 3.3 a | 2.2 B | 0.93 fg | 0.24 g | 1.66 e | 0.94 E | 0.52 be | 0.19 d | 0.72 c | 0.57 D |
| KS 2022/02 | 2.4 c | 1.5 cd | 1.7 e | 1.9 CD | 0.97 fg | 3.66 b | 0.60 i | 1.74 D | 0.37 o | 0.84 a | 0.76 b | 0.65 BC |
| SR 2022/03 | 1.6 de | 4.4 a | 2.3 cd | 2.7 A | 1.46 c-e | 6.63 a | 2.33 c | 3.47 A | 0.5 e | 0.85 a | 0.7 cd | 0.68 AB |
| SR 2022/04 | 2.1 cd | 1.4 cd | 2.7 b | 2.1 BC | 1.68 b-d | 1.63 d | 1.42 f | 1.57 D | 0.68 a | 0.62 c | 0.61 f | 0.63 C |
| SR 2022/05 | 2.2 c | 1.5 cd | 1.3 f | 1.7 DE | 1.82 be | 2.69 c | 2.28 c | 2.26 C | 0.44d e | 0.72 b | 0.77 b | 0.64 C |
| SR 2022/06 | 2.5 c | 1.3 cd | 2.5 be | 2.1 BC | 1.30 d-f | 1.01 e | 0.84 h | 1.05 F | 0.44 de | 0.37 e | 0.65 e | 0.48 E |
| KS 2022/07 | 4.3 a | 2.1 b | 1.5 ef | 2.6 A | 3.21 a | 2.95 c | 2.91 a | 3.02 B | 0.59 h-j | 0.75 b | 0.84 a | 0.72 A |
| KS 2022/08 | 2.4 c | 0.9 e | 1.5 ef | 1.6 E | 2.01 b | 0.77 ef | 2.02 d | 1.60 D | 0.47c-e | 0.47 d | 0.79 b | 0.57 D |
| SR 2022/09 | 3.6 b | 2.3 b | 2.1 d | 2.7 A | 1.21 ef | 3.52 b | 2.48 b | 2.40 C | 0.55b c | 0.86 a | 0.77 b | 0.72 A |
| SR 2022/10 | 1.2 e | 1.2 d | 2.1 d | 1.5 E | 0.54 g | 0.52 f | 1.08 g | 0.71 F | 0.57 ab | 0.51 d | 0.67 de | 0.58 D |
| Means | 2.42 A | 1.77 C | 2.08 B | 1.52 C | 2.37A | 1.77 B | 0.51 C | 0.65 B | 0.73 A | |||
| F-test | ** | ** | ** | ** | ** | ** | ** | ** | ** | |||
| C.V. (%) | 13.35 | 10.93 | 9.84 | 17.43 | 24.4 | 4.09 | 12.68 | 6.67 | 2.46 | |||
Stability analyses of storage root dry weight (t · ha−1), anthocyanin content (mg · 100 g−1 FW) and carotenoid content (mg · 100 g−1 FW) of 10 sweet potato genotypes evaluated across three locations_
| Genotypes | Storage root dry weight (t · ha−1) | b | Anthocyanin (mg · 100 g−1 FW) | b | Carotenoid (mg · 100 g−1 FW) | b | |||
|---|---|---|---|---|---|---|---|---|---|
| SR 2022/01 | 0.94 E | –1.10ns | 0.533** | 5.78 C | –0.51* | –0.075ns | 12.24 A–C | –0.60ns | 0.552ns |
| KS 2022/02 | 1.74 D | 3.51ns | 0.837** | 4.96 CD | 2.15* | –0.159ns | 11.06 BC | 4.94ns | –0.064ns |
| SR 2022/03 | 3.47 A | 6.28* | 0.257** | 7.13 B | 1.99ns | 19.258** | 10.58 C | 4.34ns | –0.876ns |
| SR 2022/04 | 1.57 D | 0.02ns | 0.027ns | 1.78 G | 0.35* | –0.419ns | 10.75 C | –0.87ns | 1.672ns |
| SR 2022/05 | 2.26 C | 0.96ns | 0.016ns | 4.77 CD | 0.61ns | 18.066** | 12.06 A–C | 4.39ns | 6.430** |
| SR 2022/06 | 1.05 F | –0.22ns | 0.076** | 3.74 EF | 0.17* | –0.324ns | 12.63 AB | 0.84ns | –0.136ns |
| KS 2022/07 | 3.02 B | –0.24ns | 0.022ns | 11.00 A | 4.23* | 0.497ns | 12.63 AB | –11.99** | –1.044ns |
| KS 2022/08 | 1.60 D | –1.56ns | 0.079** | 2.79 FG | 0.24ns | 0.114ns | 11.65 A–C | 5.95ns | 10.867** |
| SR 2022/09 | 2.40 C | 2.54ns | 0.211** | 4.47 DE | –0.49ns | 13.522** | 12.12 A–C | 12.91ns | –0.386ns |
| SR 2022/10 | 0.71 F | –0.19ns | 0.179** | 7.85 B | 1.26ns | 28.087** | 12.90 A | –9.90ns | 0.251ns |