Table 1. Collection information and vegetation types in which the 9 Quercus species investigated in this study occur.
| Species | Collection locationand altitude (m) | Collection date | Habitat type | MAP (mm) | Aridity index‡ |
| Q. annulata Sm.† | Guilin, Guangxi (N 25°01′,E 110°17′), 150 m | Nov 2007 | HSEBLF: monsoon evergreen forests | 1000–2000 | 1.3733 |
| Q. fleuryi Hickel & A. Camus† | Guilin, Guangxi (N 25°01′,E 110°17′), 230 m | Nov 2007 | SSEBLF: karstic (limestone) landscapes | 900–1200 | 1.0892 |
| Q. lamellosa Sm.# | Jingdong, Yunnan (N 24°43′,E 100°30′), 2,398 m | Oct 2006 | Tropical monsoon forests and rain forests | 2000–3000 | 1.5726 |
| Q. multinervis (W. C. Cheng &T. Hong) Govaerts† | Hunan (N 27°25′, E 112°86′), 1,090 m | Oct 2007 | HSEBLF: North subzone | 1000–2000 | 1.4986 |
| Q. schottkyana Rehder & E. H. Wilson# | Kunming, Yunnan (N25°01′, E102°41′), 1,900 m | Nov 2007 | SSELBF: valleys on the Yunnan plateau, dry-hotvalley, middle mountainous valley | 600–1600 | 0.8501 |
| Q. sichourensis (Hu)C. C. Huang & Y. T. Chang† | Yunnan (N23°45′, E 104°52′), 980 m | Nov 2007 | HSEBLF: karstic landscapes | 900–1200 | 1.1298 |
| Q. fabri Hance# | Kunming, Yunnan (N 24°97′,E 102°62′), 2,050 m | Oct 2007 | HSEBLF: evergreen & deciduous forests,evergreen forests | 800–2000 | 1.2282 |
| Q. franchetii Skan# | Kunming, Yunnan (N25°01′, E102°41′), 1,900 m | Oct 2007 | SSELBF: valleys on the Yunnan plateau, dry-hotvalley | 600–1200 | 0.513 |
| Q. variabilis Blume# | Kunming, Yunnan (N25°01′, E102°41′), 1,900 m | Oct 2007 | Warm temperate deciduous broad-leaf forests; HSEBLF: evergreen & deciduous forests,evergreen forests; SSELBF: karstic landscapes | 600–2000 | 1.0977 |
Data is compiled from [27], [28], [29]. Species names in bold are subgenus Cyclobalanopsis, the remaining species are subgenus Quercus: Q. fabri is from section Quercus, Q. franchetii and Q. variabilis are from section Cerris. HSEBLF = humid subtropical evergreen broad-leaf forests; SSEBLF = semi-humid subtropical evergreen broad-leaf forests. MAP = mean annual precipitation.
†
stored at 15°C prior to experimentation;
#
stored at 5°C prior to experimentation;
‡
from CGIAR-CSI GeoPortal [30]: the aridity index is the ratio of annual precipitation to annual potential evapo-transpiration. Consequently, the smaller the number the more arid the environment.