检索结果-南通市图书馆

A comparison of animal color measurements using a commercially available digital color sensor and photograph analysis

引用

Current Zoology 2020年第6期66卷 601-606页

作者： Alex D.Potash Daniel U.Greene Gabrielle A.Foursa Verity l.Mathis l.mike conner Robert A.McCleery Department of Wildlife Ecology and Conservation University of Florida Institute of Food and Agricultural ScienceGainesvilleFL 32611USA Weyerhaeuser Company Environmental Research SouthColumbusMS 39701USA Department of Biology University of FloridaGainesvilleFL 32611USA Florida Museum of Natural History University of FloridaGainesvilleFL 32611USA The Jones Center at Ichauway NewtonGA 39870USA

An animal's pelage,feather,or skin color can serve a variety of functions,so it is important to have multiple standardized methods for measuring *** of the most common and reliable methods for measuring animal coloration is the use of standardized digital photographs of *** tech no logy in the form of a commercially available handheld digital color sensor could provide an alter native to photography-based animal color *** determine whether a digital color sensor could be used to measure animal coloration,we tested the ability of a digital color sensor to measure coloration of mammalian,avian,and lepidopteran museums *** compared results from the sensor to measurements taken using traditional photography *** study yielded significant differences between photography-based and digital color sensor measurements of brightness(light to dark)and colors along the green to red *** was no difference between photographs and the digital color sensor measurements for colors along the blue to yellow *** average difference in recorded color(AE)by the 2 methods was above the threshold at which humans can perceive a *** were sign讦icant correlations between the sensor and photographs for all measurements indicating that the sensor is an effective animal coloration measuring ***,the sensor's small aperture and narrow light spectrum range designed for human-vision limit its value for ecological *** discuss the conditions in which a digital color sensor can be an effective tool for measuring animal coloration in both laboratory settings and in the field.

关键词： animal coloration color measurement comparative method digital photography museum specimens Nix color sensor

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Adult bobcat(lynx rufus)habitat selection in a longleaf pine savanna

引用

Ecological Processes 2018年第1期7卷 206-217页

作者： Andrew R.little l.mike conner Michael J.Chamberlain Nathan P.Nibbelink Robert J.Warren Warnell School of Forestry and Natural Resources University of Georgia180 E.Green StAthensGA 30602USA Joseph W.Jones Ecological Research Center at Ichauway NewtonGeorgia 39870USA

Background:Pine savannas are primarily managed with frequent prescribed fire(≤3 years)to promote diversity of flora and fauna,and to maintain open,park-like conditions needed by species such as the endangered red-cockaded woodpecker(Picoides borealis).However,a knowledge gap exists in our understanding of bobcat(lynx rufus)habitat selection in longleaf pine savannas and research is warranted to direct our future management ***:We examined bobcat habitat selection in a pine savanna managed with frequent fires at two spatial scales(i.e.,study area boundary[hereafter,landscape scale])and annual area of use[95%kernel density;local scale],and assessed effects of prescribed fire on bobcat habitat ***,we monitored 45 bobcats(16 males and 29 females)during 2001–***:We found differential habitat selection by *** the landscape scale,female bobcats were closer to mixed pine-hardwoods,young pine,and secondary roads,but farther from mature pine and hardwoods stands relative to *** found no difference in selection of agriculture,shrub-scrub,and primary roads between *** the annual area of use scale,female bobcats were closer to secondary roads,but farther from agriculture and shrub-scrub relative to *** found no difference in selection of mature pine,mixed pine-hardwoods,hardwoods,young pine,and primary roads between *** primarily selected for stands burned≤1.1 years ***:Our results show that bobcats exploit a broad range of habitat types in pine landscapes managed with frequent fire and commonly use recently burned stands(≤1.1 year post-fire),suggesting prey in many areas of this system are at risk of bobcat ***,we suggest land managers consider scale of selection by bobcats when developing habitat management strategies.

关键词： Georgia Habitat selection lynx rufus Pinus palustris Prescribed fire

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Inheritance of marsh spot disease resistance in cranberry common bean(Phaseolus vulgaris l.)

引用

The Crop Journal 2022年第2期10卷 456-467页

作者： Bosen Jia Robert l.conner Nadeem Khan Anfu Hou Xuhua Xia Frank M.You Ottawa Research and Development Centre Agriculture and Agri-Food CanadaOttawaOntario K1A 0C6Canada Department of Biology University of OttawaOttawaOntario K1N 6N5Canada Morden Research and Development Centre Agriculture and Agri-Food CanadaMordenManitoba R6M 1Y5Canada

Common bean(Phaseolus vulgaris) is an annual legume crop that is grown worldwide for its edible dry seeds and tender pods. Marsh spot(MS) of the seeds is a physio-genic stress disease affecting seed quality in beans. Studies have suggested that this disease involves a nutritional disorder caused by manganese deficiency, but the inheritance of resistance to this disease has not been reported. A biparental genetic population composed of 138 recombinant inbred lines(RIls) was developed from a cross between an MS resistant cultivar ‘Cran09’ and an MS susceptible cultivar ‘Messina’. The 138 RIls and their two parents were evaluated for MS resistance during five consecutive years from 2015 to 2019 in sandy and heavy clay soils in Morden, Manitoba, Canada. The MS incidence(MSI) and the MS resistance index(MSRI) representing disease severity were shown to be both highly correlated heritable traits that had high broad-sense heritability values(H;) of 86.5% and 83.2%, respectively. No significant differences for MSI and MSRI were observed between the two soil types in all five-(MSI) or four-year(MSRI) data collection, but significant correlations among years were observed despite MS resistance was moderately affected by year. The MSIs and MSRIs displayed a right-skewed distribution, indicating a mixed genetic model involving a few major genes and polygenes. Using the joint segregation analysis method, the same four major genes with additive-epistasis effects showed the best fit for both traits, explaining 84.4% and85.3% of the phenotypic variance for MSI and MSRI, respectively. For both traits, the M1, M2, M3 and m4 acted as the favorable(resistant) alleles for the four genes where M and m represent two alleles of each gene. However, due to epistatic effects, only the individuals of the M1 M2 M3 M4 haplotype appeared to be highly resistant, whereas those of the m1 m2 m3 M4 haplotype were the most susceptible. The m4 allele significantly suppressed the additive effects of M1 M

关键词： Common bean Cranberry bean Marsh spot Resistance Recombinant inbred line(RIl) Joint segregation analysis Major gene Polygene

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Stripe Rust Resistance Gene Yr10 Encodes an Evolutionary-Conserved and Unique CC-NBS-lRR Sequence in Wheat

引用

Molecular Plant 2014年第12期7卷 1740-1755页

作者： Wei liu Michele Frick Rene Huel Cory l. Nykiforuk Xiaomin Wang Denis A. Gaudet Francois Eudes Robert l. conner Alan Kuzyk Zhensheng Kang Andre laroche State Key laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection Northwest A&F University YanglingShaanxi 712100 RR. China Agriculture and Agri-Food Canada Lethbridge Research Centre 5403 1st Avenue South Lethbridge Alberta T1J 4B1 Canada Current address: The International Commission on Missing Persons Alipasina 45A Sarajevo 71000 Bosnia and Herzegovina Current address: Emergent BioSolutions 155 Innovation Drive Winnipeg MB R3T 5Y3 Canada Current address: Agriculture and Agri-Food Canada Morden Research Centre Unit 100-101 Route 100 Morden MB R6M 1Y5 Canada Retired from Agriculture and Agri-Food Canada

The first seedling or all-stage resistance （R） R gene against stripe rust isolated from Moro wheat （Triticum aes- tivum l.） using a map-based cloning approach was identified as Yr10. Clone 4B of this gene encodes a highly evolutionary- conserved and unique CC-NBS-lRR sequence. Clone 4E, a homolog of Yr10, but lacking transcription start site （TSS） and putative TATA-box and CAAT-box, is likely a non-expressed pseudogene. Clones 4B and 4E are 84% identical and divergent in the intron and the lRR domain. Gene silencing and transgenesis were used in conjunction with inoculation with differen- tially avirulent and virulent stripe rust strains to demonstrate Yr10 functionality. The Yr10 CC-NBS-lRR sequence is unique among known CC-NBS-lRR R genes in wheat but highly conserved homologs （E = 0.0） were identified in Aegilops tauschii and other monocots including Hordeum vulgare and Brachypodium distachyon. Related sequences were also identified in genomic databases of maize, rice, and in sorghum. This is the first report of a CC-NBS-lRR resistance gene in plants with limited homologies in its native host, but with numerous homologous R genes in related monocots that are either host or non-hosts for stripe rust. These results represent a unique example of gene evolution and dispersion across species.

关键词： seedling or all-stage stripe rust resistance gene functionality transgenesis gene silencing homolog sequences coiled-coil region nucleot de-b nding site leucine-rich repeat domain.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

小麦异源双倍体和染色体代换系根腐病抗性鉴定

引用

国外农学（麦类作物） 1991年第1期 8-12页

作者： Robert l.conner 傅杰

现有的硬质红粒春小麦(Triticum aestivum l. em Thell.)品种对于由病原菌Cochliobolus sativus (Ito和Kurib) *** Das ur引起的根腐病仅表现中抗水平.本研究的目的是鉴定来自方穗山羊草(节节麦)和冰草属几个种的小麦异源双倍体和染色... 详细信息

现有的硬质红粒春小麦(Triticum aestivum l. em Thell.)品种对于由病原菌Cochliobolus sativus (Ito和Kurib) *** Das ur引起的根腐病仅表现中抗水平.本研究的目的是鉴定来自方穗山羊草(节节麦)和冰草属几个种的小麦异源双倍体和染色体代换系是否能作为根腐病的新抗原.建立了携带根腐病抗性的Agrotana即小麦-茸毛冰草双倍体的温室研究系列.对由方穗山羊草第1-7条染色体代换冬小麦品种Winalta D组染色体的代换系的试验表明,它们对根腐病严重程度的影响不稳定.同样,长穗冰草部分同源染色体代换Winalta 4D、5D和6D染色体的代换系,以及中间冰草的第4条染色体代换Winalta 4B染色体的代换系,对根腐病严重程度没有影响.地下根颈节间的分离培养表明,用***侵染Agrotana,植株发病率明显比其他外来品系和普通小麦品种都低,这表明Agrotana可能对根腐病具有特异的抗性机制.

关键词：小麦根腐病抗性双倍体染色体

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Evaluation of phytophthora root rot-resistant <i>Capsicum annuum</i>accessions for resistance to phytophthora foliar blight and phytophthora stem blight

引用

Agricultural Sciences 2012年第5期3卷 732-737页

作者： Byron l. Candole Patrick J. conner Pingsheng Ji Horticulture Department University of Georgia-Tifton Campus Tifton USA Plant Pathology Department University of Georgia Athens USA

A mixture of six Georgia isolates of Phytophthora capsici (leon.), the causal agent of phytophthora blight, were used for greenhouse mass screening of over 700 accessions of Capsicum annuum for both stem blight and foliar blight. From this screening, it was determined that resistance to both forms of the disease were relatively common in the germplasm, but resistance to one form of the disease was not strongly correlated to resistance to the other form. Ten accessions previously shown to possess root rot resistance were tested for resistance to stem rot and leaf blight, and were found to also be highly resistant to these forms of the disease. It appears that single accessions have resistance to foliar, stem and root rot caused by P. capsici, which may simplify breeding for resistance to all three forms of the disease.

关键词： Pepper Phytophthora Blight Root Rot Stem Blight Foliar Blight

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Phenotypicand Genotypic Identification of Anthracnose Resistance for Kidney Bean Cultivars Grown in Western Canada

Phenotypicand Genotypic Identification of Anthracnose Resist...

引用

中国植物学会七十五周年年会

作者： R.l.conner P.Balasubramanian Soon Park Agriculture and Agri-Food Canada Research Station MordenMBCanadaR6M 1Y5 Agriculture and Agri-Food Canada Research Centre HarrowONCanadaN0R 1G0

Seedling reactions to four anthracnose races and molecular genetic analysis were used to identify the resistance genes in seven kidney bean *** controlled environmental conditions,the kidney bean cultivars,‘Napoleon...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Aphanomyces euteiches： A Threat to Canadian Field Pea Production

引用

Engineering 2018年第4期4卷 542-551页

作者： longfei Wu Kan-Fa Chang Robert l. conner Stephen Strelkov Rudolph Fredua-Agyeman Sheau-Fang Hwang David Feindel Department of Agricultural Food and Nutritional Science University of Alberta Edmonton AB T6G 2P5 Canada Crop Diversification Center North Alberta Agriculture and Forestry Edmonton AB TSY 6H3 Canada Agriculture and Agri-Food Canada Morden Research and Development Centre Morden MB R6M 1Y5 Canada

Field pea （Pisum sativum var. arvense l.） is an important legume crop around the world. It produces grains with high protein content and can improve the amount of available nitrogen in the soil. Aphanomyces root rot （ARR）, caused by the soil-borne oomycete Aphanomyces euteiches Drechs. （A. euteiches）, is a major threat to pea production in many pea-growing regions including Canada; it can cause severe root damage, wilting, and considerable yield losses under wet soil conditions. Traditional disease management strategies, such as crop rotations and seed treatments, cannot fully prevent ARR under conditions conducive for the disease, due to the longevity of the pathogen oospores, which can infect field pea plants at any growth stage. The development of pea cultivars with partial resistance or tolerance to ARR may be a promising approach to analyze the variability and physiologic specialization ofA. euteiches in field pea and to improve the management of this disease. As such, the detection of quantitative trait loci （QTl） for resistance is essential to field pea-breeding programs. In this paper, the pathogenic characteristics of A. euteiches are reviewed along with various ARR management strategies and the QTl associated with partial resistance to ARR.

关键词： Field pea Aphanomyces euteiches Root rot Pathogenicity variability Quantitative trait loci

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The disease reactions of heirloom bell pepper “California Wonder” to <i>Phytophthora capsici</i>

引用

Agricultural Sciences 2012年第3期3卷 417-424页

作者： Byron l. Candole Patrick J. conner Cecilia McGregor Vickie Waters Pingsheng Ji Horticulture Department University of Georgia Tifton Campus Tifton USA Horticulture Department University of Georgia Athens USA Plant Pathology Department University of Georgia Athens USA

Greenhouse studies were performed to determine the reactions of 10 “California Wonder” (Capsicum annuum) accessions to the three forms of Phytophthora blight (root rot, stem blight and foliar blight) caused by Phytophthora capsici. Differences in root rot, stem blight and foliar blight severities among accessions were significant. The accessions consistently differentiated into two groups across the three disease syndromes. Simple sequence repeat (SSR) markers showed variability both within and between accessions of California Wonder. The variability in the responses to the three forms of Phytophthora blight does not warrant its usefulness as a standard susceptible control in studies involving the Capsicum-P. capsici patho-system.

关键词： Pepper Phytophthora Blight Root Rot Stem Blight Foliar Blight SSR

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

硬粒小麦品种Waskana和Waskowa对禾谷孢囊线虫(Heterodera filipjevi和***)的抗性

引用

作物学报 2012年第4期38卷 571-577页

作者：高秀崔磊李洪连王晓鸣唐文华 Robert l. conner 林小虎李洪杰河北科技师范学院生命科技学院河北秦皇岛066004 中国农业科学院作物科学研究所农作物基因资源与基因改良国家重大科学工程北京100081 河南农业大学植物保护学院河南郑州450002 中国农业大学植物病理系北京100193 Agriculture andAgri-Food Canada Morden Research Station Unit 100-101 Route 100 Morden MB R6M 1Y5 Canada

禾谷孢囊线虫(cereal cyst nematode,CCN)是一类重要的土传小麦病原线虫,危害我国小麦的主要是燕麦孢囊线虫(Heterodera avenae)和菲利普孢囊线虫(***)。我国对这些病原线虫的抗性资源十分缺乏,寻找新抗源是当前抗性育种的重要工作。本... 详细信息

禾谷孢囊线虫(cereal cyst nematode,CCN)是一类重要的土传小麦病原线虫,危害我国小麦的主要是燕麦孢囊线虫(Heterodera avenae)和菲利普孢囊线虫(***)。我国对这些病原线虫的抗性资源十分缺乏,寻找新抗源是当前抗性育种的重要工作。本研究通过3年的田间病圃和温室接种鉴定,发现加拿大的硬粒小麦品种Waskana和Waskowa对***(河南许昌群体,Hfc-1致病型)和***(河南荥阳群体,Ha43致病型)都表现很强的抗性,单株孢囊数显著少于感病的普通小麦品种矮抗58、石4185和温麦19。显微观察可见,虽然2种线虫的幼虫都能够侵入Waskana和Waskowa的根组织内,但是根内的线虫数量显著少于感病对照普通小麦品种,最终在根系上形成的可见孢囊数量也较少。Waskana和Waskowa对2种病原线虫的抗性为我国抗CCN小麦品种选育提供了有较高利用价值的新抗源。根据南澳大利亚研究所的土传病害检测服务系统对土壤中病原线虫的分子检测结果,抗CCN品种Waskana和Waskowa根际土壤中的线虫虫卵量低于感病小麦品种,因此种植后可能降低土壤中禾谷孢囊线虫危害的风险。

关键词：硬粒小麦禾谷孢囊线虫 Heterodera filipjevi H.avenae 抗病性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：