搜索结果: 1-15 共查到“知识库 林木遗传学”相关记录88条 . 查询时间(3.25 秒)
该成果针对木本植物次生代谢产物多种多样，其形成和调控机理不清楚等科学问题，以我国重要工业原料——樟科植物为模式树种，系统梳理了樟科植物的系统进化关系及其萜类多样性，从基因组学水平研究樟科萜类化合物多样性形成的基础，进一步揭示樟科植物萜类化合物多样性形成的特有基因簇。成果利用基因组学、系统生物学、基因组编辑和遗传转化体系，解析了樟科萜类化合物多样性形成和生物合成的分子机理，成功组装了全球首个染色体级...
[目的]为选配油茶杂交育种最优亲本和最佳亲本组合,探索种间杂交策略,提升育种效率,获得最大遗传增益。[方法]以巢式交配的种内、种间杂交子代林为试材,测定单果质量、鲜果出籽率、干籽出仁率、种仁含油率以及脂肪酸成分含量等11个经济性状,分析母本的一般配合力(GCA)和杂交组合的特殊配合力(SCA),解析各性状的遗传控制模式。[结果]11个经济性状在12个杂交组合间均存在极显著差异,且变异主要来源于父本...
油茶WRKY基因家族鉴定及逆境胁迫表达分析
油茶 WRKY基因家族 表达分析 逆境胁迫
2023/11/29
【目的】WRKY转录因子在植物应对生物和非生物胁迫中起重要调控作用。油茶是我国南方丘陵地区重要的经济树种,常受各种逆境胁迫影响。深入挖掘油茶WRKY基因家族成员并探讨其应对逆境胁迫的表达调控模式具有重要意义。【方法】以油茶全基因组数据为参考,利用生物信息学方法,鉴定分析了CoWRKYs基因家族成员,并基于油茶逆境胁迫的相关转录组数据,明确CoWRKYs在低磷、干旱和低温等非生物胁迫下的表达模式,最...
CLE基因家族编码小分泌蛋白,参与调节植物的生长与发育;CLAVATA3(CLV3)是该家族中与作物产量相关的基因,其序列短、相似度低,鉴定该基因比较困难。本研究利用生物信息学的方法对油茶(Camellia oleifera)基因组数据进行了分析,从注释的蛋白质数据中鉴别出11个油茶CLE基因;开发了一套从基因组序列中预测CLV3基因的方法,鉴别出1个油茶CLV3基因;基因表达分析表明,CoCLV...
Combining ability from complete diallel design of Camellia oleifera: Implications for the utility of GCA and SCA in oil-related traits breeding
油茶 油脂性状 遗传差异
2024/5/10
Crossbreeding of the elite clones is an important strategy to breed the new germplasms of Camellia oleifera capable of higher oil yield and quality. While the genetic control model and heterosis of oi...
Early growth evaluation and biomass allocation difference between clones and families in Cupressus funebris
Cupressus funebris clones families biomass allocation
2023/6/2
Evaluation of growth differences between clones and families has rarely been studied in slow-growing Cupressus funebris species, and whether such growth differences are related to biomass allocation p...
本标准规定了林木 DNA 条形码构建中样本采集策略、核心 DNA 条形码片段选取标准、DNA 提取技术和保存、序列测定和编辑方法、系统发育关系构建等技术要求。本标准适用于林木DNA条形码的构建。
体细胞胚胎发生是一种大规模无性繁殖技术，广泛应用于具有重要经济和生态价值的树种。然而，低萌发率严重制约了体细胞胚胎发生技术在产业应用中的效率。课题组前期研究发现部分干化处理（PDT）是云杉体细胞胚成功萌发的先决条件。但PDT本质属于一种胁迫，会导致体胚缺水。脂质对水分含量变化敏感。一方面，结构脂质（例如甘油脂和甘油磷脂）是细胞膜中的主要成分。另一方面，信号脂质在胁迫条件下介导了对刺激的各种生理反应...
Heritable variation in tree growth and needle vegetation indices of slash pine (Pinus elliottii) using unmanned aerial vehicles (UAVs)
Pinus elliottii Heritable variation UAVs
2023/6/2
Vegetation indices (VIs) are mainly associated with plant yield, and yield-related physiological traits can assist in breeding selection. Tree breeding programs require a rapid assessment of a large n...
An approach to quantify natural durability of Eucalyptus bosistoana by near infrared spectroscopy for genetic selection
Eucalyptus near infrared spectroscopy genetic selection
2023/6/5
Natural durability within a timber species can be variable. Hence efficient assessments of natural durability are required to ensure quality either through tree breeding or segregation during producti...
Inheritance and Correlation Analysis of Pulpwood Properties, Wood Density, and Growth Traits of Slash Pine
Growth Traits Slash Pine Pulpwood Properties Wood Density
2023/6/5
Slash pine (Pinus elliottii) is the most important and a fast-growing material that is used for industrial timber and pulp production. A breeding program of slash pine that aims to improve wood proper...
Spectroscopic determination of leaf chlorophyll content and color for genetic selection on Sassafras tzumu
Spectroscopic determination leaf chlorophyll genetic selection Sassafras tzumu
2023/6/5
Reflectance spectroscopy, like IR, VIS–NIR, combined with chemometric, has been widely used in plant leaf chemical analysis. But less studies have been made on the application of NIR reflectance spect...
Overexpression of the 3-hydroxy-3-methylglutaryl-CoA synthase gene LcHMGS effectively increases the yield of monoterpenes and sesquiterpenes
3-hydroxy-3-methylglutaryl-CoA LcHMGS synthase gene
2023/6/5
Monoterpenes are important components of plant essential oils and have long been used as raw materials for spices and food flavorings. A number of studies have been performed to increase the content o...
The laurel family within the Magnoliids has attracted attentions owing to its scents, variable inflorescences, and controversial phylogenetic position. Here, we present a chromosome-level assembly of ...