Phytomelanin

Phytomelanin (phytomelan) is a black, inert, organic material that forms a crust-like covering of some seeds, commonly found in Asparagales and Asteraceae but uncommon in other taxonomic groupings. Phytomelan is found in most families of the Asparagales (although not in Orchidaceae). It is mechanically hard and forms a resistant substance, although it is more pliable in the developing fruit, hardening later. Chemically it appears to be a polyvinyl aromatic alcohol, and is thought to be exuded from the hypodermis. it appears to provide resistance to insect predators and desiccation.

单词	Phytomelan
释义	Phytomelan 英语百科 Phytomelanin Phytomelanin (phytomelan) is a black, inert, organic material that forms a crust-like covering of some seeds, commonly found in Asparagales and Asteraceae but uncommon in other taxonomic groupings. Phytomelan is found in most families of the Asparagales (although not in Orchidaceae). It is mechanically hard and forms a resistant substance, although it is more pliable in the developing fruit, hardening later. Chemically it appears to be a polyvinyl aromatic alcohol, and is thought to be exuded from the hypodermis. it appears to provide resistance to insect predators and desiccation.
随便看	retraining的意思 retraining course的意思 Retraining,Professional的意思 Retraining Professional Education的意思 retraining program的意思 retraining programs的意思 retrain的意思 Retrainings,Professional的意思 retraining technic的意思 retrain的意思 retraised的意思 retrait的意思 retraite的意思 retrait lignager的意思 retraits的意思 retral的意思 retral的意思 retral process的意思 retral swing的意思 retranch的意思 Retrangor的意思 retranscribe的意思 retranscription的意思 retransduction的意思 retransfect的意思