<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rafii, Zara A</style></author><author><style face="normal" font="default" size="100%">Zavarin, Eugene</style></author><author><style face="normal" font="default" size="100%">Pelleau, Y</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Chemosystematic differentiation of Quercus ilex and Q. rotundifolia based on acorn steroids</style></title><secondary-title><style face="normal" font="default" size="100%">Biochemical Systematics and Ecology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acorns</style></keyword><keyword><style  face="normal" font="default" size="100%">chemosystematics</style></keyword><keyword><style  face="normal" font="default" size="100%">evergreen oak</style></keyword><keyword><style  face="normal" font="default" size="100%">fatty acids</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus ilex</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus rotundifolia</style></keyword><keyword><style  face="normal" font="default" size="100%">steroids</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><volume><style face="normal" font="default" size="100%">19</style></volume><pages><style face="normal" font="default" size="100%">249-252</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Acorns from 34 individual Quercus ilex and Q. rotundifolia trees from 11 locations in Italy and Spain were sampled and analysed for composition of steroids. β-Sitosterol was most abundant in all populations. Concentrations of both stigmasterol and Δ5-avenasterol varied between individual populations in both countries. Δ7-Stigmastenol was not detected in Italian populations and brassicasterol, while absent from the Spanish specimens, was present in the Italian Uccellino population. Principal component analysis showed complete separation of Q. rotundifolia (Spain) and Q. ilex (Italy).</style></abstract></record></records></xml>