Table 4.
Environmental parameters of the four major alkaloids in the bark of the Cinchona calisaya trees.
| ID | Climatic parameters | Soil properties | Major Cinchona alkaloids (mg/g) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp (°C) | P (mm) | Alt (m) | Humus (%) | C (%) | N (%) | pH | P (mg kg−1) | K (mg kg−1) | Mg (mg kg−1) | Cinchonine | Cinchonidine | Quinidine | Quinine | Total | |
| 3998 | 15.33 | 638 | 1820 | 14.0 | 85.7 | 0.45 | 4.7 | 0.9 | 13.0 | 9.3 | 4.55 | 0.00 | 0.69 | 1.56 | 6.79 |
| 3999 | 11.55 | 828 | 1800 | 16.0 | 83.7 | 0.53 | 5.2 | 0.0 | 10.0 | 7.4 | 0.00 | 0.00 | 3.22 | 5.23 | 8.45 |
| 4001 | 11.55 | 828 | 1800 | 16.5 | 84.5 | 0.50 | 4.6 | 0.0 | 7.2 | 2.2 | 0.27 | 0.00 | 0.41 | 0.91 | 1.60 |
| 4004 | 11.55 | 828 | 1760 | 6.3 | 93.7 | 0.27 | 4.9 | 0.0 | 9.5 | 17.0 | 2.82 | 0.60 | 6.97 | 25.80 | 36.18 |
| 4006 | 15.66 | 1810 | 747 | 9.9 | 90.1 | 0.36 | 5.4 | 1.0 | 25.0 | 58.0 | 1.71 | 0.00 | 5.55 | 3.57 | 10.82 |
| 4210 | 10.87 | 1180 | 1914 | 26.0 | 74.1 | 0.74 | 4.1 | 0.0 | 26.0 | 7.3 | 0.00 | 0.00 | 0.57 | 0.00 | 0.57 |
| 4211 | 10.87 | 1180 | 1914 | 28.0 | 72.4 | 1.01 | 4.0 | 0.0 | 23.0 | 3.3 | 0.43 | 0.00 | 1.80 | 7.83 | 10.06 |
| 4214 | 13.81 | 1392 | 1305 | 12.0 | 88.5 | 0.63 | 5.0 | 1.2 | 17.0 | 12.0 | 22.93 | 1.38 | 10.01 | 6.94 | 41.25 |
| 4215 | 13.81 | 1392 | 1305 | 5.8 | 94.2 | 0.20 | 4.9 | 0.0 | 6.0 | 5.2 | 5.63 | 0.00 | 1.13 | 0.00 | 6.76 |
| 4216 | 11.09 | 1210 | 1910 | 18.0 | 82.3 | 0.50 | 4.2 | 0.0 | 14.0 | 2.0 | 2.69 | 0.00 | 9.56 | 0.26 | 12.51 |
| 4218 | 10.27 | 1202 | 1900 | 40.0 | 60.5 | 1.21 | 4.1 | 0.0 | 20.0 | 2.7 | 0.00 | 0.00 | 0.14 | 0.16 | 0.30 |
| 4219 | 11.51 | 1227 | 1683 | 4.2 | 95.8 | 0.18 | 4.7 | 0.0 | 25.0 | 25.0 | 0.00 | 0.00 | 0.96 | 0.78 | 1.74 |
| 4221 | 13.84 | 1368 | 1348 | 6.0 | 94.0 | 0.19 | 5.7 | 0.0 | 20.0 | 38.0 | 2.10 | 2.28 | 0.66 | 17.77 | 22.82 |
| 4222 | 13.84 | 1368 | 1134 | 2.5 | 97.5 | 0.07 | 6.1 | 0.0 | 3.9 | 44.0 | 0.00 | 0.00 | 1.05 | 16.69 | 17.74 |
| 4223 | 14.20 | 1366 | 1123 | 6.1 | 93.9 | 0.20 | 4.4 | 0.0 | 3.9 | 88.0 | 1.01 | 1.62 | 0.52 | 12.69 | 15.86 |
| 4226 | 13.52 | 1309 | 1264 | 5.1 | 94.9 | 0.20 | 5.0 | 0.0 | 11.0 | 10.0 | 0.84 | 0.00 | 2.51 | 10.20 | 13.56 |
| 4227 | 13.87 | 1325 | 1209 | 2.9 | 97.1 | 0.11 | 4.7 | 0.0 | 7.5 | 7.3 | 1.73 | 2.94 | 0.39 | 11.28 | 16.33 |
| 4228 | 11.55 | 1282 | 1260 | 2.8 | 97.2 | 0.10 | 4.9 | 0.0 | 5.1 | 10.0 | 1.16 | 3.10 | 0.25 | 20.09 | 24.59 |
| 4234 | 15.03 | 1142 | 2092 | 4.7 | 95.3 | 0.29 | 5.6 | 0.4 | 15.0 | 34.0 | 0.00 | 0.00 | 0.97 | 1.70 | 2.67 |
| 4235 | 15.03 | 1142 | 2092 | 6.2 | 93.8 | 0.21 | 5.6 | 0.5 | 13.0 | 28.0 | 0.00 | 0.00 | 0.48 | 0.55 | 1.03 |
| 4236 | 15.46 | 1187 | 1947 | 2.8 | 97.2 | 0.15 | 5.1 | 0.0 | 6.8 | 3.4 | 0.00 | 0.00 | 0.93 | 0.54 | 1.48 |
| 4237 | 17.53 | 558 | 2050 | 3.3 | 96.7 | 0.14 | 5.9 | 0.0 | 7.3 | 12.0 | 0.00 | 0.00 | 0.79 | 0.52 | 1.31 |
| Average | 2.11 | 0.54 | 2.24 | 6.57 | 11.56 | ||||||||||
Alkaloid content are averages of samples at three heights per tree (0.7, 1.3, and 2.0 m). Alkaloid content in our tested samples was not significantly different among the three different trunk heights (Figures 2b,d).