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Microscopic characterization of petiole anatomy of Asteraceous taxa of Western Himalaya-Pakistan
Microscopy Research and Technique ( IF 2.5 ) Pub Date : 2021-09-17 , DOI: 10.1002/jemt.23933
Anam Akhtar 1 , Mushtaq Ahmad 1, 2 , Tariq Mahmood 3 , Amir Muhammad Khan 4, 5 , Muhammad Arfan 6 , Qamar Abbas 7 , Muhammad Zafar 1 , Shazia Sultana 1 , Rabia Batool 8 , Anam Fatima 4 , Siraj Khan 9 , Sher Aman Ullah 1 , Amjad Khan 1
Affiliation  

Petiole anatomy of 15 species of family Asteraceae was examined which aimed to investigate petiolar anatomical structures for species level identification. Shandon Microtome was used for petiole histological preparations. Both qualitative and quantitative features were studied under microscope which showed significant variation in petiole, collenchyma, parenchyma shape/size, vascular bundles arrangement/size, and vessel elements quantity. Artemisia japonica Thunb., Cirsium vulgare (Savi) Ten., Myriactis nepalensis Less., Seriphidium brevifolium Ling & Y.R.Ling, Taraxacum officinale (L.) Weber ex F.H.Wigg., and Xanthium strumarium L. showed winged petioles. Maximum length and width of upper and lower epidermis was found in Tagetes erecta L. which is 23.05 ± 0.89 μm, 24.9 ± 1.257 μm length and 21.75 ± 1.38067 μm, 22.75 ± 0.467 μm width, respectively. Petioles of Parthenium hysterophorus L. was longest one with 9.85 ± 10.45 μm while A. japonica Thunb. showed highest number of vessel elements. Maximum size of vascular bundles was found in T. erecta L. with 5.05 ± 14.25 μm. Artemisia annua L., C. vulgare (Savi) Ten, Cyanthillium cinereum (L.) H.Rob., Helianthus annus L., M. nepalensis Less., P. hysterophorus L., Senecio chrysanthemoides DC. have trichomes while Tussilago farfara L. has highest number of vascular bundles. All species have angular collenchyma type except M. nepalensis Less., P. hysterophorus L., S. brevifolium Ling & Y.R.Ling, Tagetes minuta L., T. officinale L., S. chrysanthemoides DC., and T. farfara L. Cluster analysis implemented that distinct plant species in cluster. Petiolar anatomical structures and taxonomic key will helpful for distinguishing Asteraceous taxa at genus and species level. This taxonomic significant investigation will also provide baseline to taxonomists for other Asteraceae studies and phylogenetic research.

中文翻译:

西喜马拉雅-巴基斯坦海星类群叶柄解剖的显微特征

研究了 15 种菊科植物的叶柄解剖结构,旨在研究叶柄解剖结构以进行物种水平鉴定。Shandon Microtome 用于叶柄组织学制备。在显微镜下研究了定性和定量特征,显示叶柄、厚壁组织、薄壁组织形状/大小、维管束排列/大小和血管元素数量有显着变化。Artemisia japonica Thunb.、Cirsium v​​ulgare (Savi) Ten.、Myriactis nepalensis Less.、Seriphidium brevifolium Ling & YRLing、Taraxacum officinale (L.) Weber ex FHWigg. 和Xanthium strumariumL. 显示有翅的叶柄。在万寿菊中发现上下表皮的最大长度和宽度分别为23.05±0.89μm、24.9±1.257μm和21.75±1.38067μm、22.75±0.467μm。Parthenium hysterophorus L.的叶柄最长,为 9.85 ± 10.45 μm,而A . 粳稻_ 显示出最多的血管元素。在T中发现了维管束的最大尺寸。5.05 ± 14.25 μm 的直立L.。青蒿L. , C. vulgare (Savi) 十、Cyanthillium cinereum (L.) H.Rob.、Helianthus annus L.、尼泊尔少,Physterophorus L.,Senecio chrysanthemoides DC。有毛状体,而Tussilago farfara L. 的维管束数量最多。除M外,所有物种均具有角毛囊型。尼泊尔少,Physterophorus L. , S. brevifolium Ling & YRLing, Tagetes minuta L. , T. officinale L. , S. chrysanthemoides DC .和T. 法拉L. 聚类分析在聚类中实现了不同的植物物种。叶柄解剖结构和分类学关键将有助于区分属和种水平的星类分类群。这项分类学意义重大的调查还将为分类学家提供其他菊科研究和系统发育研究的基线。
更新日期:2021-09-17
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