...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Pakistan journal of botany >A palynological survey of wetland plants of Punjab, Pakistan
【24h】

A palynological survey of wetland plants of Punjab, Pakistan

机译：巴基斯坦旁遮普邦湿地植物的孢粉调查

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Pollen of 34 aquatic plants distributed in 13 dicotyledonous and 7 monocotyledonous families of Punjab (Pakistan) have been investigated by Light and Scanning Electron Microscopy. Pollen are generally free in most of the aquatic plants, rarely united in tetrads such as in Juncaceae and Typhaceae. Most of the pollen are radially symmetrical, isopolar-apolar, often heteropolar as in Trapa bispinosa Roxb., Nymphaea alba L., Eichhornia crassipes (Mart.) Roxb., Cyperus species, oblate-prolate spheroidal, infrequently prolate-subprolate. Non aperturate, poroid (false apertures), both simple (porate and colpate) and compound (colporate) apertures have been observed. Aquatic families also exhibit a great variation in tectum types varying from scabrate, reticulate to rugulate, verrucate, echinate, striate, sub-psilate punctuate, finely reticulate with muri patterns, areolate and sc abrate -a reolate punctate. The pollen characteristics are quite distinct for the identification of species. Five distinct types are recognized on the basis of tectum and apertural types i.e., Non-aperturate, Porate, Colpate, Colporate and Miscellaneous.
机译：通过光学和扫描电子显微镜对分布在旁遮普邦（巴基斯坦）的13个双子叶和7个单子叶植物中的34种水生植物的花粉进行了调查。在大多数水生植物中，花粉通常是游离的，很少会聚在一起，例如菊科和香菜科。大多数花粉呈放射状对称，等极性-非极性，通常是异极性的，如Trapa bispinosa Roxb。，Nymphaea alba L.，Eichhornia crassipes（Mart。）Roxb。，莎草属，扁长扁球形，不常扁长圆形。已观察到非开孔，脉络膜（假孔），简单（多孔和colpate）孔和复合（多孔）孔。水生科在顶盖类型上也表现出很大的变化，从sc形，网状到具皱纹，细齿状，细化，棘生，细纹，亚点状，微网状，m孔状，带状和sc片状。花粉的特性对于物种鉴定非常不同。根据顶盖和无孔类型识别出五种不同的类型，即，无孔，孔状，colpate，colporate和其他。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号