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pitacio

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phylojentic tree

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pitacio

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  1. PHYLOGENETIC TREE OF PISTACIA STUDENT / SHAYMA AHMED , KINAN AJIL  SUPERVISOR /DR.JUTYAR 

  2. INTRODICTION A phylogenetic tree is a diagram that represents evolutionary relationships among organisms. Phylogenetic trees are hypotheses, not definitive facts. The pattern of branching in a phylogenetic tree reflects how species or other groups evolved from a series of common ancestors. In trees, two species are more related if they have a more recent common ancestor and less related if they have a less recent common ancestor. Phylogenetic trees can be drawn in various equivalent styles. Rotating a tree about its branch points doesn't change the information it carries.

  3. STEPS IN PHYLOGENETIC ANALYSIS Assemble and align a dataset Build (estimate) phylogenetic trees Statistically test and assess the estimated trees.

  4. THE OBJECTIVES OF THIS STUDY 1) construct the phylogeny of Pistacia based on both nuclear and plastid sequences, (2) test the intrageneric classification of Pistacia, (3) elucidate the extent and nature of reticulate evolution among Pistacia species, and (4) discuss the taxonomic delimitation of Pistacia species.

  5. PISTACIA TREE Pistacia is characterized by its dioecious reproductive system and homeochlamydic perianth (or naked flowers) Pistacia, distinguished from other Anacardiaceae members by its reduced flower structure, plumose styles, and unusual pollen morphology was described as a separate family, Pistaciaceae Adans. although Pistacia was treated as a distinct tribe or a subfamily On the basis of the morphology of leaves, leaflet, inflorescence, flowers, fruits, and the seedlings, divided Pistacia into four sections: Lentiscella Zoh., including P. mexicana HBK, and P. texana Swingle; Eu Lentiscus Zoh., including P. lentiscus L., P. saportae Burnat., and P. weinmannifolia Poisson; Butmela Zoh., including P. atlantica Desf.; and Eu Terebinthus Zoh., including P. chinensis Bge., P. khinjuk Stocks, P. palaestina Boiss., P. terebinthus L., and P. vera L. On the basis of plastid restriction site analysis and morphological characters,

  6. MATERIALS AND METHODS Small text

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