检索结果-南通市图书馆

Application of near-infrared spectroscopy for fast germplasm analysis and classification in multi-environment using intact-seed peanut(Arachis hypogaea L.)

引用

Oil Crop Science 2024年第2期9卷 132-141页

作者： fentanesh Chekole Kassie Gilles Chaix Hermine Bille Ngalle Maguette Seye Coura fall Hodo-Abalo Tossim Aissatou Sambou Olivier Gibert fabrice Davrieux Joseph Martin Bell Jean-francois Rami Daniel fonceka Joel Romaric Nguepjop Department of Plant Biology and Physiology Faculty of SciencesUniversity of Yaounde IYaoundeP.O.Box 337Cameroon Department of Plant Science College of AgricultureWolaita Sodo UniversitySodoP.O.Box 138Ethiopia cirad UMR AGAP InstitutMontpellierFrance AGAP Institut Univ MontpellierCIRADINRAEInstitut AgroMontpellierFrance ChemHouse Research Group MontpellierFrance Centre D’Etudes Regional Pour L’Amelioration de L’Adaptation a La Secheresse(CERAAS/ISRA) Route de KhomboleThiesBP 3320Senegal Dispositif de Recherche et de formation en Partenariat Innovation et Amelioration Varietale en Afrique de L’Ouest(IAVAO)CERAASRoute de KhomboleThiesBP 3320Senegal cirad UMR QUALISUDSaint PierreFrance

Peanut is a worldwide oilseed crop and the need to assess germplasm in a non-destructive manner is important for seed nutritional *** this study,Near Infrared Spectroscopy(NIRS)was applied to rapidly assess germplasm variability from whole seed of 699 samples,field-collected and assembled in four genetic and environmentbased sets:one set of 300 varieties of a core-collection and three sets of 133 genotypes of an interspecific population,evaluated in three environments in a large spatial scale of two countries,Mbalmayo and Bafia in Cameroon and Nioro in Senegal,under rainfed *** elemental spectra were gathered on six subsets of seeds of each sample,after three rotation scans,with a spectral resolution of 16 cm-1over the spectral range of867 nm to 2530 *** were then processed by principal component analysis(PCA)coupled with Partial least squares-discriminant analysis(PLS-DA).As results,a huge variability was found between varieties and genotypes for all NIR wavelength within and between *** magnitude of genetic variation was particularly observed at 11 relevant wavelengths such as 1723 nm,usually related to oil content and fatty acid *** yielded the most chemical attributes in three significant PCs(i.e.,eigenvalues>10),which together captured 93%of the total variation,revealing genetic and environment structure of varieties and genotypes into four clusters,corresponding to the four samples *** pattern of genetic variability of the interspecific population covers,remarkably half of spectrum of the core-collection,turning out to be the ***,a PLS-DA model was developed and a strong accuracy of 99.6%was achieved for the four sets,aiming to classify each seed sample according to environment *** confusion matrix achieved for the two sets of Bafia and Nioro showed 100%of instances classified correctly with 100%at both sensitivity and specificity,confirming that their seed quality was different f

关键词： Groundnut Oilseed Near infrared spectroscopy Germplasm analysis Environment Nutritional Breeding

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

Species and endosymbiont diversity of Bemisia tabaci （Homoptera： Aleyrodidae） on vegetable crops in Senegal

引用

Insect Science 2015年第3期22卷 386-398页

作者： Delatte Helene Baudin Remy Becker Nathalie Girard Anne-Laure Ramatoulaye Sidebe Traore Lett Jean-Michel Reynaud Bernard cirad UMR PVBMT F-97410 Saint-Pierre La Reunion France Museum National d'Histoire Naturelle Institut de Systematique Evolution Biodiversite ISYEB UMR 7205 CNRS UPMC EPHE 75005 Paris France TECHNISEM Zone d'activite Anjou Actiparc de Jumelles 49160 Longue-Jumelles France

Bemisia tabaci-transmitted geminiviruses are one of the major threats on cassava and vegetable crops in Africa. However, to date, few studies are available on the diversity orB. tabaci and their associated endosymbionts in Africa. More than 28 species have been described in the complex ofB. tabaci cryptic species; among them, 2 are invasive pests worldwide： MED and MEAM1. In order to assess the species diversity orB. tabaci in vegetable crops in Senegal, several samplings in different localities, hosts and seasons were collected and analyzed with nuclear （microsatellite） and mitochondrial （COI） markers. The bacterial endosymbiont community was also studied for each sample. Two species were detected： MED Q1 and MEAM1 B. Patterns of MED Q1 （dominance on most of the samples and sites, highest nuclear and mitochondrial diversity and broader secondary endosymbiont community： Hamiltonella, Cardinium, Wolbachia and Rickettsia）, point toward a predominant resident begomovirus vector group for MED Q 1 on market gardening crops. furthermore, the lower prevalence of the second species MEAM1 B, its lower nuclear and mitochondrial diversity and a narrower secondary endosymbiont community （Hamiltonella/Rickettsia）, indicate that this genetic group is exotic and results from a recent invasion in this area.

关键词： begomovirus vectors endosymbionts diversity MED and MEAM 1 species microsatellites mtCOI phylogeny whitefly

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

New Bacterial Agents to Limit Colletotrichum gloeosporioidesDevelopment on Mango

引用

Advances in Microbiology 2020年第12期10卷 691-712页

作者： Ahmed Taïbi Jean-Christophe Meile Hugo Dieudonné Lise Korsten Marc Chillet fabienne Remize cirad umr qualisud f-97410 saint pierre Réunion France qualisud Univ Montpellier InstitutAgro Avignon Université Univ de La Réunion Montpellier France Univ de La Réunion UMR QualiSud Saint Pierre France Univ de La Réunion UMR QualiSud Saint Pierre France Department of Plant and Soil Science Agricultural Sciences Building University of Pretoria Pretoria South Africa

Mango anthracnose disease forms typical irregular-shaped black necrotic spots on the fruit peel of mature fruit and is caused by Colletotrichum gloeosporioides. In order to improve the disease control with a limited use of fungicides, new microbial agents able to limit the growth of the pathogen were searched in the indigenous natural flora of mango surface. In order to find a suitable biocontrol agent, a screening was applied to 305 epiphytic bacteria isolated from the carposphere of 17 mango cultivars sampled from eight locations on Reunion Island. The screening approach involved a first step based on the ability of the isolates to form a biofilm, to grow under fruit storage conditions, and to interfere with the development of C. gloeosporioides. In a second step, the capability of selected isolates to limit C. gloeosporioides in vitro mycelial growth and conidia germination was assessed and species identified. The most effective bacteria belonged to the Enterobacter, Pantoea, Kosakonia and Leuconostoc genera, but for some of them, their safe use has to be demonstrated. Efficacy in vivo, performed on wounded mature mango fruit, was limited, probably because of the wounding inoculation strategy favoring the pathogen. future biocontrol treatments should focus on preharvest applications to enhance the protective benefit.

关键词： Anthracnose Epiphytic Bacteria Antagonism

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

Potential Use of Essentials Oils to Control fruitlet Core Rot (fCR) in Pineapple (Queen Victoria Variety) in Reunion Island

引用

American Journal of Plant Sciences 2020年第11期11卷 1671-1681页

作者： Marc Chillet Angélique Hoareau Mathilde Hoarau Jérome Minier cirad UMR QUALISUD 7 Chemin de l’IRAT 97410 Saint Pierre Ile de la Réunion France qualisud Univ. Montpellier CIRAD Montpellier SupAgro Univ. d’Avignon Univ. de la Réunion Montpellier France

fruitlet Core Rot (fCR) is one of the major postharvest diseases of pineapple (Ananas comosus var. comosus), especially on the prone variety Queen Victoria cultivated in Reunion Island. This aggressive disease is generally due to two pathogens: Fusarium ananatum and Thalaromyces stolii, and needs to be controlled during postharvest. In Reunion Island, F. ananatum is the principal causal agent impacting fruit exportation. Fruit produced for the export market is generally treated with chemicals. This type of postharvest treatment is not in line with consumer expectations, as consumers prefer fruits treated with nonharmful and natural products. The objective of this work was to study alternative postharvest treatments using the fungitoxic properties of essential oils and their ability to elicit the resistance mechanisms of the fruit. Six EAs were tested in vitro on mycelial growth of F. ananatum. Whether by volatilization or included in the culture medium, some essential oils such as thymol, eugenol, geraniol and the carvone/menthol mixture have a strong fungistatic effect. But only thymol has a fungitoxic effect. The thymol, a natural molecule synthesized by thyme (Thymus vulgaris L. thymoliferum

关键词： Essential Oils fruitlet Core Rot Pineapple Postharvest Treatment Thymol

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

Estimating Compositions and Nutritional Values of Seed Mixes Based on Vision Transformers

引用

Plant Phenomics 2023年第4期5卷 805-815页

作者： Shamprikta Mehreen Hervé Goëau pierre Bonnet Sophie Chau Julien Champ Alexis Joly Inria LIRMMUniversity MontpellierCNRSMontpellierFrance cirad UMR AMAPMontpellierOccitanieFrance Chambre d'Agriculture-Haute Vienne LimogesNouvelle-AquitaineFrance

The cultivation of seed mixtures for local pastures is a traditional mixed cropping technique of cereals and legumes for producing,at a low production cost,a balanced animal feed in energy and protein in livestock *** considerably improving the autonomy and safety of agricultural systems,as well as reducing their impact on the environment,it is a type of crop that responds favorably to both the evolution of the European regulations on the use of phytosanitary products and the expectations of consumers who wish to increase their consumption of organic ***,farmers find it difficult to adopt it because cereals and legumes do not ripen synchronously and the harvested seeds are heterogeneous,making it more difficult to assess their nutritional *** efforts therefore remain to be made to acquire and aggregate technical and economical references to evaluate to what extent the cultivation of seed mixtures could positively contribute to securing and reducing the costs of herd *** work presented in this paper proposes new Artificial Intelligence techniques that could be transferred to an online or smartphone application to automatically estimate the nutritional value of harvested seed mixes to help farmers better manage the yield and thus engage them to promote and contribute to a better knowledge of this type of *** this purpose,an original open image dataset has been built containing 4,749 images of seed mixes,covering 11 seed varieties,with which 2 types of recent deep learning models have been *** results highlight the potential of this method and show that the best-performing model is a recent state-of-the-art vision transformer pre-trained with self-supervision(Bidirectional Encoder representation from Image Transformer).It allows an estimation of the nutritional value of seed mixtures with a coefficient of determination R^(2)score of 0.91,which demonstrates the interest of this type of approach,for its possible use

关键词： transferred cultivation harvest

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

Effect of physiological harvest stages on the composition of bioactive compounds in Cavendish bananas

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第4期14卷 270-278页

作者： Christelle BRUNO BONNET Olivier HUBERT Didier MBEGUIE-A-MBEGUIE Dominique PALLET Abel HIOL Max REYNES Patrick POUCHERET Université des Antilles et de la Guyane INRA URZ 143BP 25097157 Pointe-à-PitreGuadeloupeFrance Centre de Coopération International en Recherche Agronomique pour le Développement(cirad) UMR 95 QualisudStation de NeufchateauSainte-Marie97130 Capesterre-Belle-EauGuadeloupeFrance cirad UMR 95 QualisudTA B 95/1673 Rue Jean-Fran ois Breton34398 Montpellier Cedex 5France Laboratoire de Pharmacologie et Physiopathologie Expérimentale UMR 95 QualisudFaculté de PharmacieUniversité Montpellier 115 Avenue Charles Flahault34093 Montpellier Cedex 5France

The combined influence of maturation,ripening,and climate on the profile of bioactive compounds was studied in banana(Musa acuminata,AAA,Cavendish,*** Naine).Their bioactive compounds were determined by the folin-Ciocalteu assay and high-performance thin layer chromatographic(HPTLC) *** polyphenol content of bananas harvested after 400 degree days remained unchanged during ripening,while bananas harvested after 600 and 900 degree days exhibited a significant polyphenol *** dopamine was the polyphenol with the highest concentration in banana peels during the green developmental stage and ripening,its kinetics differed from the total polyphenol *** results showed that this matrix of choice(maturation,ripening,and climate) may allow selection of the banana(***,AAA,Cavendish,*** Naine) status that will produce optimal concentrations of identified compounds with human health relevance.

关键词： Banana Ripening Harvest ages Polyphenol Dopamine Starch

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

Optimisation of the Postharvest Treatment with Thymol to Control Mango Anthracnose

引用

American Journal of Plant Sciences 2020年第8期11卷 1235-1246页

作者： Marc Chillet Jérome Minier Mathilde Hoarau Jean-Christophe Meile cirad umr qualisud 7 Chemin de l’IRAT Ligne Paradis Saint Pierre Ile de La Réunion France qualisud Université de Montpellier CIRAD Université de la Réunion Montpellier SupAgro Université d’Avignon et des Pays de Vaucluse Montpellier France

Anthracnose, caused by the fungus called Colletotrichum gloeosporioides, is the main postharvest disease that affects mango production on Reunion Island. fruits for the export market are always treated with chemicals.... 详细信息

Anthracnose, caused by the fungus called Colletotrichum gloeosporioides, is the main postharvest disease that affects mango production on Reunion Island. Fruits for the export market are always treated with chemicals. The use of chemical treatment is not in adequation with consumer expectations, and the increasing emergence of fungicide-resistant isolates promotes the development of alternatives methods. The principal objective of this work was to use antimicrobial properties of thymol as an alternative postharvest treatment on mango. Thymol diluated in a penetrating agent solution was effective on mango anthracnose. At a concentration of 0.025%, Thymol limited necrosis development due to pathogens during fruit storage. This treatment can stimulate some of polyphenols biosynthesis involved in the fruit resistance to postharvest disease, particularly thesynthesis of gallic acid and resorcinol. With this final concentration of 0.025% thymol, the treatment did not affect fruit maturation and quality, especially the peel colour and sugar content. Importantly, the treatment did not show any detectable effect on organoleptic qualities of the fruit.

关键词： Mango Mangifera indica Anthracnose Colletotrichum gloeosporioides Biological Control Phenolic Compound Thymol

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

A chromosome-level,haplotype-phased Vanilla planifolia genome highlights the challenge of partial endoreplication for accurate wholegenome assembly

引用

Plant Communications 2022年第5期3卷 117-131页

作者： Quentin Piet Gaetan Droc William Marande Gautier Sarah Stephanie Bocs Christophe Klopp Mickael Bourge Sonja Siljak-Yakovlev Olivier Bouchez Ce line Lopez-Roques Sandra Lepers-Andrzejewski Laurent Bourgois Joseph Zucca Michel Dron Pascale Besse Michel Grisoni Cyril Jourda Carine Charron cirad UMR PVBMT97410 Saint-PierreLa ReunionFrance cirad UMR AGAP Institut34398 MontpellierFrance umr AGAP Institut Univ MontpellierCIRADINRAEInstitut Agro34398 MontpellierFrance french Institute of Bioinformatics(IfB)-South Green Bioinformatics Platform BioversityCIRADINRAEIRD34398 MontpellierFrance INRAE CNRGVGenotoul31326 Castanet-TolosanFrance AGAP Univ.MontpellierCIRADINRAEMontpellier SupAgroMontpellierFrance Plateforme Bioinformatique GenotoulBioinfoMicsUR875 Biometrie et Intelligence ArtificielleINRAECastanet-TolosanFrance Cytometry facility Imagerie-GifUniversite Paris-SaclayCEACNRSInstitute for Integrative Biology of the Cell(I2BC)91198 Gif-sur-YvetteFrance Universite Paris-Saclay CNRSAgroParisTechEcologie Syste matique Evolution(ESE)91190 Gif-sur-YvetteFrance INRAE GeT-PlaGeGenotoul31326 Castanet-TolosanFrance Etablissement Vanille de Tahiti UturoaFrench PolynesiaFrance Eurovanille Rue de Maresquel62870 Gouy Saint AndreFrance De partement Biotechnologie V.Mane Fils06620 Le Bar Sur LoupFrance Universite Paris-Saclay CNRSINRAEUniv.EvryInstitute of Plant Sciences Paris-Saclay(IPS2)91405 OrsayFrance Universite de la Re union UMR PVBMTSaint-PierreLa Re unionFrance cirad UMR PVBMT501 TamataveMadagascar

Vanilla planifolia, the species cultivated to produce one of the world’s most popular flavors, is highly proneto partial genome endoreplication, which leads to highly unbalanced DNA content in cells. We report herethe first molecular evidence of partial endoreplication at the chromosome scale by the assembly and annotation of an accurate haplotype-phased genome of V. planifolia. Cytogenetic data demonstrated that thediploid genome size is 4.09 Gb, with 16 chromosome pairs, although aneuploid cells are frequentlyobserved. Using PacBio Hifi and optical mapping, we assembled and phased a diploid genome of 3.4 Gbwith a scaffold N50 of 1.2 Mb and 59 128 predicted protein-coding genes. The atypical k-mer frequenciesand the uneven sequencing depth observed agreed with our expectation of unbalanced genome representation. Sixty-seven percent of the genes were scattered over only 30% of the genome, putatively linkinggene-rich regions and the endoreplication phenomenon. By contrast, low-coverage regions (non-endoreplicated) were rich in repeated elements but also contained 33% of the annotated genes. furthermore, this assembly showed distinct haplotype-specific sequencing depth variation patterns, suggesting complexmolecular regulation of endoreplication along the chromosomes. This high-quality, anchored assemblyrepresents 83% of the estimated V. planifolia genome. It provides a significant step toward the elucidationof this complex genome. To support post-genomics efforts, we developed the Vanilla Genome Hub, a userfriendly integrated web portal that enables centralized access to high-throughput genomic and other omicsdata and interoperable use of bioinformatics tools.

关键词： vanilla whole-genome sequencing optical mapping partial endoreplication genome hub

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

Biological Activity of Syzygium aromaticumand Ravensara aromaticaEssential Oils from Madagascar and Their Possible Use against Postharvest Mango Anthracnose

引用

American Journal of Plant Sciences 2020年第11期11卷 1682-1697页

作者： Soloniony Navalonamanitra Andrianjafinandrasana Marc Chillet Isabelle Ratsimiala Ramonta Jean-Michel Leong Pock Tsy Jerôme Minier Pascal Danthu Université d’Antananarivo Sciences et Technologies Sciences de la Vie et de l’Environnement Biotechnologie Antananarivo Madagascar DP forêts & Biodiversité Antananarivo Madagascar cirad Persyst UMR Qualisud 7 Chemin de l’IRAT 97410 SAINT PIERRE La Réunion UMR Qualisud Université de Montpellier CIRAD Université de la Réunion Montpellier SupAgro Université d’Avignon et des Pays de Vaucluse Montpellier France Département des Recherches forestières et Gestion Ressources Naturelles-fOfIfA Antananarivo Madagascar cirad UPR HortSys Université de Montpellier Montpellier France

The fungitoxicity of five Malagasy essential oils (Eos) against Colletotrichum asianum was assessed in terms of conidial germination and mycelial growth. Their effect on defense-related compounds content, physicochemical properties and anthracnose lesions in mango fruits was also determined. Four of the tested Eos were from Ravensara aromatica leaves, and the last Eo was extracted from clove leaves. Their chemical compositions were then determined through GC-MS analysis and the active compound of the most fungitoxic Eo was determined by testing the toxicity of its major component to C. asianums spore germination, mycelialfont-family:;" "="">

关键词： Biological Activity Syzygium aromaticum Ravensara aromatic fungitoxicity Anthracnose Essential Oils

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

Lipid Profile and Antioxidant Activity of Macadamia Nuts (Macadamia integrifolia) Cultivated in Venezuela

引用

Natural Science 2015年第12期7卷 535-547页

作者： Alejandra Rengel Elevina Pérez George Piombo Julien Ricci Adrien Servent María Soledad Tapia Olivier Gibert Didier Montet Instituto de Ciencia y Tecnología de Alimentos Facultad de Ciencias Universidad Central de Venezuela Caracas Venezuela cirad UMR Iate Campus de la Gaillarde 2 place Pierre Viala Montpellier France cirad UMR 95 Qualisud TA B-95/16 73 rue Jean-Francois Breton Montpellier France

Macadamia nuts (Macadamia integrifolia) grown in Venezuela have showed an average total fat content of 70%. Oleic acid (18:1) was the main monounsaturated fatty acid (MUfA) (51.3%), followed by palmitoleic acid (16:1, 22.6%). The content of polyunsaturated fatty acids (PUfAs), C18:2 and C18:3 represented 5.4%. Thus, MUfAs and PUfAs together constituted more than 80% of the total fatty acids present. Trans-vaccenic acid was also present (3%). As regards to other phytochemical compounds, tocopherols and tocotrienols were not found in the sample, but the presence of squalene was *** antioxidant activity (44.2%) of the extract was produced by the phytochemicals present.

关键词： Lipids Antioxidant Activity fatty Acids Macadamia Nut Phytochemical Compounds

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

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：