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用光镜和扫描电镜比较了桃金娘科(Myrtaceae)9属21种木材的解剖结构。结果表明:多数种木材生长轮不明显,几乎都为散孔材,木材分子非叠生,导管分子单穿孔板,管间纹孔具附物,胞间道和管状分子壁螺纹加厚壁缺如,少数种有分膈纤维。2亚科间木材结构有明显差异,桃金娘亚科(Myrtoideae)木材结构较细籽亚科(Lep-tospermoideae)原始。 相似文献
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《Journal of Natural History》2012,46(11):1683-1706
The weevils known to develop in Syzygium and Eugenia (Myrtaceae) fruit are reviewed. These weevils belong to the genera Curculio, Alcidodes, Acythopeus, Apotomorhinus (Curculionidae: Curculioninae, Molytinae and (the last two) Baridinae respectively) and Sitophilus (Dryophthoridae) in the Old World, and Atractomerus (Curculionidae: Anthonominae) in the Neotropics; two undescribed baridine species (one in Australia and the other in the USA) are also known to feed on the fruits, and the Omophorine Teleuropus (Curculionidae: Molytinae) has been found associated with them. Particular attention is paid to species of Alcidodes from aseasonal dipterocarp-dominated forests in South-East Asia. Two Bornean species (Alcidodes janetae sp. n. and A. eugeniophilus sp. n.) are the first of their genus to be reared from the fruit of Syzygium or Eugenia. These species, plus two other (A. expansitarsis sp. n. from Assam, Myanmar, Cambodia and Laos, and A. gymnasticus sp. n. from Malaysia) belong to a previously undescribed species group of Alcidodes; all four species are described and keyed. 相似文献
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为从马六甲蒲桃果实中寻找化学成分,利用正反相硅胶柱色谱、凝胶柱色谱等技术对马六甲蒲桃果实的乙醇提取物进行分离纯化,通过1H-NMR和13C-NMR等波谱技术结合文献数据对照进行化合物结构鉴定。共分离鉴定了17个化合物,分别为山奈酚3-O-β-D-吡喃葡萄糖(1)、山奈酚-3-O-α-L-鼠李糖(2)、异鼠李素(3)、异鼠李素-3-O-α-L-鼠李糖(4)、槲皮素-3-O-α-L-鼠李糖(5)、槲皮素-3-O-β-D-吡喃葡萄糖(6)、槲皮素-3-O-β-D-吡喃木糖(7)、杨梅素-4’-甲醚-3-O-α-L-鼠李糖(8)、6,8-二甲基乔松素(9)、乔松素-7-O-β-D-吡喃葡萄糖(10)、 stercurensin(11)、根皮苷(12)、3-甲氧基鞣花酸-3′-O-α-L-吡喃鼠李糖(13),4,5-二羟基-6-甲基-α-吡喃酮(14)、5,7-二羟基-2-甲基色原酮(15)、反式肉桂酸(16)和苹果酸二甲酯(17)。其中化合物11~10为黄酮,11和12为查尔酮,其中,化合物4、6、14、15和17首次从蒲桃属植物中分离得到,1、4、5、6、9、10、1133~17首次从马六甲... 相似文献
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