Table 2. The phytotoxicity of ethephon on Ipomoea cairica and accompanying species.
| Family | Life form | Species |
Degree of phytotoxicity under different concentrations of ethephon |
||
|---|---|---|---|---|---|
| 5g/L | 2g/L | 1g/L | |||
| Euphorbiaceae | Tree | Bischofia javanica | - | - | 0 |
| Moraceae | Tree | Ficus hispida | 2 | 2,0 | 0 |
| Ulmaceae | Tree | Trema tomentosa | - | 0 | - |
| Convolvulaceae | Herb | Ipomoea cairica | 4,3 | 4,3 | 4,3 |
| Araceae | Herb | Colocasia antiquorum | 0 | - | - |
| Araceae | Herb | Alocasia macrorrhiza | 2 | - | 1 |
| Araliaceae | Herb | Schefflera arboricola | - | - | 0 |
| Asteraceae | Herb | Ageratum conyzoides | - | 2 | - |
| Asteraceae | Herb | Trilobate wedelia | 3 | - | - |
| Asteraceae | Herb | Eupatorium catarium | - | 2 | - |
| Asteraceae | Herb | Erigeron canadensis | - | 2 | - |
| Asteraceae | Herb | Bidens bipinnata | 3 | 3 | 3 |
| Asteraceae | Herb | Artemisia argyi | - | - | 0 |
| Commelinaceae | Herb | Commelina communis | 3 | - | - |
| Mimosaceae | Herb | Mimosa pudica | - | - | 3 |
| Poaceae | Herb | Digitaria ciliaris | - | 0 | - |
| Poaceae | Herb | Neyraudia reynaudiana | 1 | - | 0 |
| Poaceae | Herb | Oplismenus compositus | - | 0 | - |
| Polygonaceae | Herb | Polygonum chinensis | 0 | 0 | - |
| Rubiaceae | Herb | Paeseria scandens | 3 | - | - |
| Urticaceae | Herb | Boehmeria nivea | 0 | - | - |
Note: 0: no phytotoxicity; 1: little phytotoxicity, with malformed leaves; 2:middle phytotoxicity, with spots on leaves; 3:serious phytotoxicity, with withered leaves; 4:dead. The label “-” means the absence of species.