نتایج جستجو برای: gymnosperms

تعداد نتایج: 875  

Journal: :Current Biology 2012
Simon Laurin-Lemay Henner Brinkmann Hervé Philippe

Ginkgo Zamia Cycas Podocarpus Sequoia Sciadopitys Pinus Welwitschia Gnetum Vitis Ricinus Nuphar Amborella Ceratopteris Pteridium Adiantum Huperzia Ceratodon Physcomitrella Marchantia Penium Closterium Spirogyra Coleochaete Chaetosphaeridium Nitella Chara Klebsormidium Chlorokybus Mesostigma Volvox Chlamydomonas Scenedesmus Prototheca Chlorella Coccomyxa Botryococcus Ostreococcus Micromonas Pyra...

2015
William Oki Wong David Leonard Dilcher Conrad C. Labandeira Ge Sun Andreas Fleischmann

Archaeamphora longicervia H. Q. Li was described as an herbaceous, Sarraceniaceae-like pitcher plant from the mid Early Cretaceous Yixian Formation of Liaoning Province, northeastern China. Here, a re-investigation of A. longicervia specimens from the Yixian Formation provides new insights into its identity and the morphology of pitcher plants claimed by Li. We demonstrate that putative pitcher...

Journal: :Diversity 2023

In the context of climate change in recent years, fate woody plant seed has an important impact on forest regeneration. Seed mass is reproductive strategy plants. There are huge differences between gymnosperms (mainly conifers) and angiosperms (flowering plants) terms reproduction hydraulic strategies; however, little known about changes along aridity gradients taxonomical groups such as angios...

Journal: :Molecular biology and evolution 1997
S M Chaw A Zharkikh H M Sung T C Lau W H Li

To study the evolutionary relationships among the four living gymnosperm orders and the interfamilial relationships in each order, a set of 65 nuclear 18S rRNA sequences from ferns, gymnosperms, and angiosperms was analyzed using the neighbor-joining and maximum-parsimony methods. With Selaginella as the outgroup, the analysis strongly indicates that the seed plants form a monophyletic group wi...

Journal: :Ecological Applications 2021

Seedling planting plays a key role in active forest restoration and regeneration of managed stands. Plant attributes at outplanting can determine tree seedling survival consequently early success plantations. Although many studies show that large seedlings the same age within species have higher than small ones, others report opposite. This may be due to differences environmental conditions sit...

Journal: :Proceedings of the National Academy of Sciences 1957

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