搜索结果: 1-15 共查到“农学 Stem”相关记录129条 . 查询时间(0.164 秒)
Integration of Multi-Sensor Data to Estimate Plot-Level Stem Volume Using Machine Learning Algorithms-Case Study of Evergreen Conifer Planted Forests in Japan
UAS stem volume TLS SAR random forest support vector multiple regression forest biophysical parameter
2023/12/21
The development of new methods for estimating precise forest structure parameters is essential for the quantitative evaluation of forest resources. Conventional use of satellite image data, increasing...
Long-Term Soil Fertility and Site Productivity in Stem-Only and Whole-Tree Harvested Stands in Boreal Forest of Quebec (Canada)
forest biomass whole-tree harvesting soil productivity site quality index soil provinces
2023/12/19
Using residual biomass from forest harvesting to produce energy is viewed increasingly as a means to reduce fossil fuel consumption. However, the impact such practices on soil and future site producti...
Drought induces epitranscriptome and proteome changes in stem-differentiating xylem of Populus trichocarpa
Populus trichocarpa Drought stem-differentiating xylem epitranscriptome proteome RNA
2023/11/16
Understanding gene expression and regulation requires insights into RNA transcription, processing, modification, and translation. However, the relationship between the epitranscriptome and the proteom...
An efficient method to reduce grain angle influence on NIR spectra for predicting extractives content from heartwood stem cores of Toona. Sinensis
NIR spectra heartwood stem cores Toona. Sinensis grain angle
2023/6/5
A fast, reliable and non-destructive method is needed to qualify the extractives content (EC) in heartwood of T. sinensis cores in the breeding program for studying the genetic effect on EC. However, ...
FASE刊“Large Animal Stem Cells”专辑综述文章全面阐述猪多能性干细胞最新研究进展及科学展望（图）
FASE刊 Large Animal Stem Cells 综述文章 猪 多能性干细胞 动物育种应用
2019/3/12
多能干细胞（PSC）因其具有自我更新和多向分化潜能，在体外可以长期培养并能进行基因编辑，其在生命科学与医学领域，以及动物育种应用等领域备受青睐。然而，大家畜，如猪，至今没有获得能够进行生殖嵌合、稳定传代、体外长期培养的多能干细胞系。这也是制约大家畜育种的瓶颈。自第一株小鼠胚胎干细胞报道以来，科学家对猪多能干细胞进了30多年的攻关，虽取得了良好的进展，但仍存在急需解决的科学问题。近日，由中国农业大学...
Adaptive k-tree sample plot for the estimation of stem density: An empirical approach
plotless sampling distance sampling bias efficiency forest sampling
2018/3/6
Available budgets for the inventory of non-commercial woodlands are small. Therefore, there has been increased
interest in using distance methods, such as k-tree sampling, which are faster than fixed...
Impact of logging intensity on stem density, basal area and biodiversity indices five years after logging in a Caspian hardwood forest
harvesting intensity forest biodiversity northern Iran
2017/6/26
The aim of the present study was to analyse the impacts of different logging intensities after five years from logging including non-logged, low (3.4 felled stems per hectare), medium (5.2 felled stem...
Postulation of seedling stem rust resistance genes of Yunnan wheat cultivars in China
Triticum aestivum L Puccinia graminis Sr gene gene postulation
2016/9/2
To determine stem rust resistance genes of wheat varieties in Yunnan province, 11 Chinese strains of Puccinia graminis f.sp. tritici with different virulence and 1 artificial mutant strain were used i...
Discovery of new stem cell pathway indicates route to much higher yields in maize,staple crops
new stem cell pathway much higher yields maize staple crops
2016/5/19
Biologists at Cold Spring Harbor Laboratory (CSHL) have made an important discovery that helps explain how plants regulate the proliferation of their stem cells. The discovery has near-term implicatio...
Effect of permanent waterlogging on the growth of poplar clones MAX 4,MAX 5 (J-104, J-105) (Populus maximowiczii A.Henry × P. nigra Linnaeus) and evaluation of wood moisture content in different stem parts–Short Communication
biomass fast-growing tree species effect of site energy coppicies short rotation Japanese poplar
2016/5/11
The study deals with differences in the growth of 2-year mix of poplar clones MAX 4, MAX 5 in the first rotation period at a site with the average moisture regime and at a neighbouring site affected b...
Effects of Extracellular Matrix Protein-derived Signaling on the Maintenance of the Undifferentiated State of Spermatogonial Stem Cells from Porcine Neonatal Testis
Porcine Spermatogonial Stem Cells Undifferentiation, Extracellular Matrix Proteins
2016/11/10
In general, the seminiferous tubule basement membrane (STBM), comprising laminin, collagen IV, perlecan, and entactin, plays an important role in self-renewal and spermatogenesis of spermatogonial ste...
Stem rust resistance in 1BL.1RS and 2RL.2BS double wheat-rye translocation lines
backcrossing durable resistance minor genes Puccinia graminis f.sp. tritici
2015/12/29
The wheat stem rust pathogen, Puccinia graminis f.sp. tritici, is a significant and devastating disease of wheat crops worldwide. Wheat has many wild relatives in which to source new resistance genes,...
Isolation and Identification of Prepubertal Buffalo (Bubalus bubalis) Spermatogonial Stem Cells
Buffalo Spermatogonial Stem Cell Germ Cell Marker Proliferation
2016/11/10
Isolation and culture of spermatogonial stem cells (SSCs) are attractive for production of genetic modified offspring. In the present study, buffalo spermatogonial stem-like cells were isolated, cultu...
Effect of repeated fertilization on stem growth in old stands of Pinus sylvestris in South East Norway
nitrogen Scots pine tree ring widths
2015/5/18
We studied effects of repeated nitrogen applications on the stem growth of mature Scots pine at four sites
with the yield potential of around 3‒4.5 m3·ha–1·yr–1. Treatments included control (0...
Adipose stem cell combined with plasma-based implant bone tissue differentiation in vitro and in a horse with a phalanx digitalis distalis fracture: a case report
hoof bone fracture fat tissue plasma implant in vitro differentiation horse
2015/4/15
A horse suffering from an undetected hoof bone fracture was diagnosed three weeks after injury. The formation of callus tissue was detected at the fracture site. Standard orthopaedic screw application...