Comestibilité de différents clones de pin sylvestre pour Diprion pini L. (Hym., Diprionidae): II. Relations entre le contenu phénolique des aiguilles de pins sylvestres et la mortalité des larves de Diprion pini
1991
Auger, M. A. | Jay‐Allemand, C. | Bastien, C. | Geri, C.
Foliage edibility of Scots Pine clones for Diprion pini L. (Hym., Diprionidae). II. Relationships between the content of phenols within the needles and the mortality of D. pini larvae A comparative study has been done on the polyphenolic content of leaves sampled on 20 different clones of Scots pine by means of thin layer chromatography. Typical variations have been observed between these clones which were characterized by the lack or the presence of the hydroxycinnamic and stained compound by DMACA (F1 and F2) groups. The presence of these 2 last compounds seems to be linked to high rates of larva mortality (till 90 %) of Diprion pini which have been feeded by leaves coming from the clones. But, these results show that a precise study on the relationship leave‐insect should be lead in order to determine the right origin of the leave toxicity.
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