Results 31 to 40 of about 6,364 (167)
Classification and phylogeographical analyses of Siphonaria and Cellana limpets in China and Southeast [PDF]
, 2015 探究岩相潮间带生物的多样性以及分布格局的形成机制不仅有助于我们了解不同时空尺度下历史和当代环境因素的作用结果，而且为全球变化和人类活动背景下预报未来生物群落的动态变化提供了理论依据。快速发展的生物地理学和系统地理学的理论知识和分析方法已成为探究生物多样性的有效工具。本研究在此背景下对广泛分布于中国及东南亚岩相潮间带腹足纲中的帽贝属(Cellana)和菊花螺属(Siphonaria)进行了生物地理学和系统地理学分析，揭示了这两个属的贝类在东南亚沿岸的分布，并讨论了历史和当代因素在塑造嫁虫戚(C ...
王杰
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The Two Faces of Introgression in Conservation Biology 基因渗入在保育生物学中的双重面貌
Integrative Conservation, Volume 4, Issue 3, Page 339-344, September 2025.Conservation biologist need to take into account the various aspects of introgression in their attempts to protect the species integrity and evolutionary potential of threatened species. To do so, they have to overcome the bias created by the Mayrian species concept that considers species as having distinct gene pools.
Harald Schneider, Charles H. Cannon
wiley +1 more source
Study on selective breeding of new strains with rapid growth and growth characteristic in Marsupenaeus japonicus [PDF]
, 2015 日本囊对虾(Marsupenaeusjaponicus)体色艳丽，肉质鲜美，是我国重要的养殖虾类。多年来，我国日本囊对虾育苗用的种虾过分依赖海捕资源，用于苗种生产的种虾通常未经选育和检疫，养殖生产苗种的生长较为缓慢、抗病能力差、单产低，这些问题严重制约了日本囊对虾养殖产业的发展。因此，培育生长快速的健康优质虾苗，是关系到日本囊对虾养殖产业可持续发展的重要课题。 论文以课题组选育的日本囊对虾和野生日本囊对虾为材料，通过多元统计方法比较分析了日本囊对虾选育群体和野生群体的形态差异 ...
林瑶琼
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Reactive oxygen species act as signaling molecules to control root hair initiation and tip growth
New Phytologist, Volume 247, Issue 5, Page 2042-2048, September 2025.Summary Root hairs (RHs) increase the surface area of roots, facilitating nutrient and water uptake and plant anchorage. RHs form from root epidermal cells and elongate by polar tip growth. Reactive oxygen species (ROS) have recently been implicated as important signals that drive RH formation and elongation using both genetic and imaging approaches ...
Megan E. Gerber +2 more
wiley +1 more source
Genetic diversity of Noctiluca scintillans [PDF]
, 2016 夜光藻是一种常见的赤潮藻，在世界大部分近海海域均有分布。目前普遍认为夜光藻只有一个种，但还没有研究探索不同地理种群的夜光藻是否产生了种内变异。本研究通过单细胞PCR以及单细胞克隆文库的方法，比较了中国黄海、东海、南海，墨西哥湾以及阿拉伯海5个海域夜光藻核糖体基因的遗传多样性。主要研究结果如下： 1、发现22种ITS单倍型(n=103)，12种28S单倍型(n=25)，6种18S单倍型(n=31)；这3个基因的单倍型多样度(Hd)分别为0.824、0.670、0.557，核苷酸多样度(π)分别为0 ...
潘永柏
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New Phytologist, Volume 247, Issue 5, Page 2086-2097, September 2025.Summary The importance of marine angiosperms, or seagrasses, as foundation species for marine coastal ecosystems is in marked contrast to their low species number of only 70 described taxa. Seagrass species tend to have very similar overall morphologies dictated by hydrodynamic forces of the ocean environment.
Xiaomei Zhang +14 more
wiley +1 more source
Genetic Structure and Breeding System of Kandelia obovata Populations in Zhangjiangkou Mangrove Forest of Fujian Province [PDF]
, 2017 利用9对nSSR引物和3对cpSSR引物，对漳江口红树林国家级自然保护区内秋茄纯林和秋茄＋白骨壤林的秋茄种群进行遗传结构、繁育系统、基因流和空间遗传结构的研究，结果表明： (1)纯林和混交林秋茄种群均存在显著偏离HWE，存在杂合子缺失现象。但并未经历近期瓶颈效应事件。纯林秋茄种群（Na为26.778，He为0.809，I为2.182）和混交林（Na为23.889，He为0.771，I为1.994）均存在高水平的遗传多样性，纯林略高于混交林。纯林秋茄种群共有21个单倍型，显著高于混交林（10个 ...
肖兰
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New Phytologist, Volume 247, Issue 2, Page 504-517, July 2025.Summary Repetitive DNA is a feature of all organisms, ranging from archaea and plants to humans. DNA repeats can be seen both in coding and in noncoding regions of the genome. Due to the recurring nature of the sequences, simple DNA repeats tend to be more prone to errors during replication and repair, resulting in variability in their unit length ...
Sridevi Sureshkumar +3 more
wiley +1 more source
Genetic Diversity Analysis of Five Populations of Paphia undulata [PDF]
, 2016 采用形态特征和微卫星分子标记对采自菲律宾(PH)、泰国(TH)、福建云霄(YX)、海南儋州(HN)和广西北海(BH)的5个地理群体的波纹巴非蛤(Paphia undulata)进行遗传多样性分析.形态差异分析结果显示,国外群体和国内群体形态差异明显:2个国外群体(PH和TH)形态接近,聚为一支;国内支系中,YX和HN群体的形态较近,先聚为一支,而BH群体的外部形态与前两者差异较大.Hardy-Weinberg平衡检验检测到所有群体在5个位点上均出现不同程度地偏离平衡.5个群体间遗传分化指数(FST,0 ...
张鹏飞 +5 more
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New Phytologist, Volume 247, Issue 1, Page 144-159, July 2025.Summary Domesticated chickpea cultivars exhibit limited genetic diversity. This study evaluated the effects of chickpea domestication on phosphorus (P)‐use efficiency (PUE) under low‐P conditions, using a diverse Cicer collection, including wild species. Two wild Cicer species – 54 C. reticulatum accessions and 15 C. echinospermum accessions, and seven
Jiayin Pang +8 more
wiley +1 more source