Table 4.
Comparison of the mean nectar TSS (mg)/inflorescence of eight Acacia species growing in Saudi Arabia at different local times of the day.
| Species | 0600 h | 0900 h | 1200 h | 1500 h | 1800 h | Mean |
|---|---|---|---|---|---|---|
| A. asak | 1.3 ± 2.3c | 3.0 ± 2.8bc | 4.7 ± 2.2ab | 5.0 ± 4.2a | 5.0 ± 3.5a | 3.8 ± 1.6 |
| A. ehrenbergiana | 4.2 ± 2.4c | 4.8 ± 2.7c | 5.6 ± 2.8c | 7.3 ± 2.6b | 9.0 ± 2.3a | 6.2 ± 2.0 |
| A. ethbaica | 0.8 ± 0.9b | 1.8 ± 2.0a | 1.4 ± 1.3ab | 2.2 ± 1.7a | 1.7 ± 1.5a | 1.6 ± 0.5 |
| A. gerrardii | 5.4 ± 1.7a | 5.4 ± 2.3a | 7.0 ± 4.7a | 5.6 ± 3.9a | 3.2 ± 1.1b | 5.3 ± 1.4 |
| A. johnwoody | 1.5 ± 1.3b | 2.0 ± 1.6b | 4.0 ± 1.9a | 3.4 ± 2.1a | 2.2 ± 1.2b | 2.6 ± 1.0 |
| A. oerfata | 2.8 ± 1.6d | 6.2 ± 2.6c | 8.6 ± 2.7b | 10.6 ± 3.7a | 10.0 ± 4.0ab | 7.7 ± 3.2 |
| A. origena | 3.0 ± 2.0a | 2.6 ± 2.2a | 3.2 ± 2.6a | 3.3 ± 2.3a | 1.4 ± 0.9b | 2.7 ± 0.8 |
| A. tortilis | 1.0 ± 0.6c | 1.5 ± 1.0bc | 2.3 ± 1.8ab | 3.0 ± 2.4a | 2.4 ± 2.0ab | 2.0 ± 0.8 |
Values in the same row which are not connected by same letter are significantly (P < 0.0001) different; One inflorescence is used for one time measurement only; For each species: DF = 4, P < 0.0001, N = 45 (Except A. gerrardii N = 55).