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Journal articles on the topic 'Variabilité morphologique/morphological variabilit'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Abdelkader, Allam, Aïssa Tirichine, Habib Madani, and Wiam Benlamoud. "Morphological variability of sorghum (Sorghum bicolor L. Moench) cultivated in the valley of Oued Righ (South-East Algeria)." Lebanese Science Journal 19, no. 1 (2018): 10–18. http://dx.doi.org/10.22453/lsj-019.1.010-018.

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The present work aimedto establish a morphological characterization of 10 sorghum (Sorghum bicolor L. Moench) cultivars sampled from farmers of OuedRigh valley. The study wasbased on the evaluation of 20 agro-morphological parameters of which 14 are quantitative and 6 qualitative.Principal components analysis (ACP) of the results suggested interdependence of evaluated parameters and showedsignificant differences amongcultivars. The study revealed eight highly significant correlations, including four positive and four negative. The cultivars of the Blidet Amorregion, Bouhnik"BA1"and Mahjoubi "B

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Belhadj, Safia, Arezki Derridj, Yves Auda, Charles Gers, and Thierry Gauquelin. "Analyse de la variabilité morphologique chez huit populations spontanées de Pistacia atlantica en Algérie." Botany 86, no. 5 (2008): 520–32. http://dx.doi.org/10.1139/b08-008.

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To study the morphological variability within and among Pistacia atlantica Desf. populations, a comparative analysis was undertaken in eight wild populations grown under different climatic conditions in Algeria. This study addresses the morpho-biometrical aspect of the leaves and the fruits, as well as the micromorphological aspect of leaves. ANOVA as well as mean comparison of the morphological traits revealed a significant diversity within and among the populations. Furthermore, in the multivariate analysis, the populations were separated into four different groups through the discriminating

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Nana, Rasmata, Saïdou Bonkoungou, N’golo Diakalia Coulibaly, Amos Miningou, Bepio Hervé Bama, and Hawa Sohoro. "Evaluation agro-morphologique de sept écotypes de lentille de terre (Macrotyloma geocarpum) cultivés au Burkina Faso." International Journal of Biological and Chemical Sciences 14, no. 3 (2020): 835–47. http://dx.doi.org/10.4314/ijbcs.v14i3.15.

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Macrotyloma geocarpum est une légumineuse dont sa culture est largement abandonnée au profit de celle d’autres légumineuses. Cette étude avait pour objectif d’identifier les écotypes performants à partir d’une caractérisation agromorphologique dans les conditions pluviales. Les résultats ont montré une diversité phénotypique entre les écotypes pour les caractères couleur du tégument, couleur des fleurs et du pétiole. L’analyse de variance a révélé une faible variabilité entre les caractères quantitatifs. La classification ascendante hiérarchique a mis en évidence 3 ensembles de diversité agro-

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Aissi, Abdeldjalil, Yassine Beghami, and Myriam Heuertz. "Le chêne faginé (Quercus faginea, Fagaceae) en Algérie : potentiel germinatif et variabilité morphologique des glands et des semis." Plant Ecology and Evolution 152, no. 3 (2019): 437–49. http://dx.doi.org/10.5091/plecevo.2019.1553.

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The Portuguese Oak in Algeria (Quercus faginea, Fagaceae): germination potential and variability of acorn and seedling morphology Background and aims – The Portuguese Oak, Quercus faginea Lam. (Fagaceae) forms part of iconic Mediterranean forest communities and is of great ecological and taxonomic value in Algeria. Unfortunately, the species is under threat and its populations remain poorly characterized. The aim of this paper is to study the variability of acorn morphology and germination potential of Q. faginea in Algeria, to examine variability in the growth of seedlings and to evalua

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Háněl, Ladislav, and Michał Brzeski. "Paratylenchinae: evaluation of diagnostic morpho-biometrical characters of females in the genus Paratylenchus Micoletzky, 1922 (Nematoda: Tylenchulidae)." Nematology 2, no. 3 (2000): 253–61. http://dx.doi.org/10.1163/156854100509097.

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AbstractExamination of morphological variability within single female lines of Paratylenchus microdorus, P. straeleni, P. bukowinensis and P. projectus showed that females offer a limited number of characters useful for differentiation of similar species. The most stable were index V, followed by stylet length, conus length and index m. The most variable were tail length and shape, indices c' and c, and these are considered unreliable for separation of similar species. It is concluded that the description of a Paratylenchus species should be based on adults of both sexes as well as resistant j

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Tarpaga, Windpouiré Vianney, Larbouga Bourgou, Moussa Guira, and Albert Rouamba. "Agro morphological characterization of cashew trees (Anacardium occidental L.), in improvement for the high yield and high quality of raw nuts in Burkina Faso." International Journal of Biological and Chemical Sciences 14, no. 9 (2021): 3188–99. http://dx.doi.org/10.4314/ijbcs.v14i9.17.

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The cashew sector has taken a great economic interest, due to the strong global demand for raw nuts. However, in Burkina Faso, the productivity of orchards still remains low, a consequence of a lack of breeding program on the species. In order to increase yields and improve the quality of the raw nut, efficient clones must be developed. Surveys were carried out and a primary in situ collection was made from which a core collection of 15 trees was extracted. An agro-morphological description of the selected trees and an analysis of the structuration of the variability within them were carried o

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Belkadi, Bouchra, Nourredine Assali, and Ouafae Benlhabib. "Variation of specific morphological traits and ploidy level of five Aegilops L. species in Morocco." Acta Botanica Malacitana 28 (January 1, 2003): 47–58. http://dx.doi.org/10.24310/abm.v28i0.7265.

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ABSTRACT. Variation of specific morphological traits and ploidy level of five Aegilops L. species in Morocco.The genus Aegilops L. represents an important natural source of useful genes for wheat breeding, with particular emphasis on biotic and abiotic stress resistance. For successful crosses, the primarily step is to select appropriate Aegilops accessions. In this paper, we studied five Moroccan species of an Aegilops collection on the basis of spike structure and chromosome number. Twenty-eight specific morphological characters were used to differentiate the species. Statistical analyses, i

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8

Assongba, Yédjanlognon Faustin, Jean Innocent Essou, Cossi Aristide Adomou, and M. G. Julien Djego. "Caractérisation morphologique de Cleome gynandra L. au Bénin." International Journal of Biological and Chemical Sciences 15, no. 1 (2021): 185–99. http://dx.doi.org/10.4314/ijbcs.v15i1.16.

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Au Bénin des efforts scientifiques sont consentis pour la connaissance de la diversité végétale. Cleome gynandra L. (Caya blanc, Sabo en Adja, Akaya en Mahi et Semboué en Peulh) de la famille des Capparaceaes fait l'objet de cette étude à travers sa connaissance agromorphologique. La méthodologie utilisée passe par des observations et prélèvement dans la nature et jardins de case. Dix (10) pieds de la plante ont été collectés dans chaque zone climatique et un (1) pied dans le jardin botanique de l’Université d’Abomey-Calavi. En plus des observations sur la plante complète, il est procédé à l’a

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Reyes, Peña Santiago, and Manuel Peralta. "The genus Tylencholaimellus Cobb in M. V. Cobb, 1915 (Nematoda: Dorylaimida): general morphology, taxonomy, compendium, and polytomous key to the species." Nematology 1, no. 2 (1999): 183–94. http://dx.doi.org/10.1163/156854199508153.

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Abstract A general study of the morphology, evolutionary trends and intrageneric taxonomy of the genus Tylencholaimellus Cobb in M. V. Cobb, 1915 is presented. Variability of its main morphological features is described and illustrated, and their possible evolutionary trends are discussed. The subgenera Tylencholaimellus (Tylencholaimellus) Cobb in M. V. Cobb, 1915 and Tylencholaimellus (Coronatylencholaimellus) Jairajpuri & Ahmad, 1992 are considered synonyms, and consequently not retained. A diagnosis of the genus, a list of its species and a polytomous key to the species are given. Le g

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TRAORÈ, Ibrahima Cheikhou, Nianguiri Moussa KONATE, Elhadji FAYE, Habibou Mbaye GUEYE, and Hamidou DIENG. "Collecte, tri et caractérisation des accessions de maïs (Zea mays L.) de décrue cultivées au niveau de la haute et moyenne vallée du fleuve Sénégal (cas de la Mauritanie)." Journal of Animal & Plant Sciences 42.3 (December 31, 2019): 7330–39. http://dx.doi.org/10.35759/janmplsci.v42-3.5.

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L’objectif de cette étude était de collecter, trier et étudier la diversité phénotypique des accessions de maïs de décrue sur la base de quelques variables sélectionnées, parmi les descripteurs du maïs. Cent soixante-deux (162) accessions de maïs de décrue collectées dans la haute et moyenne vallée du fleuve Sénégal ont été ainsi triées et évaluées au plan morphologique. Parmi ces 162 accessions, 64,81% sont collectées au niveau de la haute vallée et 35,19 % dans la moyenne vallée. En se basant sur trois caractères morphologiques du maïs, (couleurs des grains, texture des grains et couleur de

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11

Masmoudi-Charfi, C., M. Msallem, and S. Ben Abdallah. "Variabilite des Parametres Morphologiques chez l’Olivier et Relations Correlatives = Variability of Morphological Parameters among the Olive Tree and Relations Correlatives." Revue des Bioressources 5, no. 2 (2015): 14–37. http://dx.doi.org/10.12816/0045853.

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12

Kouonon, Léonie Clémence, Kouamé Guillaume Koffi, Koffi Adjoumani, Anouman Désirée Sandrine Mobio, and Koudougnon Alice Estère Goba. "Caractérisation phénotypique du néré (Parkia biglobosa (Jacq.) R. Br. ex G. Don, Fabaceae) dans trois types de savane de Côte d’Ivoire." International Journal of Biological and Chemical Sciences 14, no. 2 (2020): 555–69. http://dx.doi.org/10.4314/ijbcs.v14i2.20.

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Afin de préserver les nombreux biens et services fournis par Parkia biglobosa (Jacq.) R. Br. ex G. Don, Fabaceae, il est fondamental de connaître la variabilité phénotypique de l’espèce pour sa domestication. L’objectif de cette étude est de déterminer des caractères morphologiques permettant d’identifier des arbres-plus dans les savanes de Côte d’Ivoire. La variabilité phénotypique d’arbres distants d’au moins 100 m des trois types de savane a été étudiée à travers 22 caractères quantitatifs relatifs aux troncs, feuilles, fruits et graines. La matrice de données obtenue a été analysée avec di

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13

Durand, J., and J. Surprenant. "Relations entre les caractères morphologiques et la qualité chez la fléole des prés (Phleum pratense L.)." Canadian Journal of Plant Science 73, no. 3 (1993): 803–14. http://dx.doi.org/10.4141/cjps93-103.

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Selection of high feed quality timothy (Phleum pratense L.) would be facilitated by the identification of morphological traits associated with quality. The objectives of this study were: (1) to evaluate the presence of genetic variability for morphological traits; (2) to evaluate the relationship between morphological and quality traits; and (3) to measure the association between whole plant and stem and leaf quality. The phenotypic correlations obtained between morphological traits and quality appeared unstable from year to year for most associations. However, canonical analysis has indicated

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14

Filippo, Carlotta De, Marco Bazzicalupo, Giuseppe Messana, and Mariella Baratti. "DETECTION OF GENETIC VARIABILITY IN STYGOBITIC ISOPODS USING RAPD MARKERS." Crustaceana 72, no. 7 (1999): 625–34. http://dx.doi.org/10.1163/156854099503672.

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AbstractThree species of the stygobitic isopod genus Stenasellus have been described from Italy: Stenasellus racovitzai, S. nuragicus, and S. assorgiai. Recent electrophoretic data suggest the presence of more than one species in the "racovitzai"-group. In order to clarify the degree of genetic variability and the evolutionary trends in the "racovitzai-group, we have analysed three natural populations currently known from Italy and Corsica, by the Random Amplified Polymorphic DNA (RAPD)" technique. RAPD has proven to be a rapid and valid method for the detection of intra and interspecific gene

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15

Moret, J., H. Couderc, R. Gorenflot, and J. M. Hubac. "La variabilité morphologique des taxons marocains du genre Ornithogalum sous-genre Heliocharmos : une étude biométrique." Canadian Journal of Botany 66, no. 11 (1988): 2178–86. http://dx.doi.org/10.1139/b88-301.

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Taxa of the subgenus Heliocharmos Baker belonging to the genus Ornithogalum L. (Liliaceae) have been studied in Morocco from a biometric standpoint. It appears, from multidimensional analyses (principal component analysis and discriminant analysis), that it is not possible to recognize the existence of all the taxa reported by former authors. Two groups are morphologically distinct. The first corresponds to O. kochii Parl, and the second to O. algeriense Jord. and Fourr. The latter group includes all individuals that, according to Maire's Flora, can be related to O. comosum L., O. tenuifolium

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16

Karatajute-Talimaa, V. "Determination Methods for the Exoskeletal Remains of Early Vertebrates." Fossil Record 1, no. 1 (1998): 21–51. http://dx.doi.org/10.5194/fr-1-21-1998.

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The exoskeleton, consisting of micromeric elements (odontodes) and their derivatives, is characteristic of the most ancient vertebrates. Great morphological and histological variability of discrete exoskeletal microremains makes it difficult to identify them. It is necessary to study not only separate scales or tesserae, but also to get a picture of the squamation in general, because species determined from discrete elements are understood as an assemblage of morphological types. For determination of discrete exoskeletal elements, their morphology, internal structure, defined tissue types of c

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17

Thiébaut, Éric, and Jean-Claude Dauvin. "Développement morphologique et croissance des juvéniles de l'Owenia fusiformis Delle Chiaje (Polychaeta, Oweniidae)." Canadian Journal of Zoology 70, no. 9 (1992): 1701–11. http://dx.doi.org/10.1139/z92-237.

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The morphological development of the branchial crown and uncinigerous tori, growth, and demographic structure were observed in juveniles of Owenia fusiformis Delle Chiaje, 1841 from the Bay of Seine (eastern English Channel). Growth becomes significant only after one and a half months of benthic life; individual growth is highly variable and results in a progressive widening of the size distribution of the population over time. From six initial branches present at the post-larval stage, seven stages of branchial development can be distinguished. The branchial crown develops by successive dicho

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18

Beghdadi, Abdellatif, Claude Richard, and Daniel Dostaler. "L'Aphanomyces euteiches des luzernières du Québec: isolement, morphologie et variabilité de la croissance et du pouvoir pathogène." Canadian Journal of Botany 70, no. 9 (1992): 1903–11. http://dx.doi.org/10.1139/b92-236.

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Sixteen strains of Aphanomyces euteiches were obtained from alfalfa seedlings by a baiting technique. They were found in the soil of 10 out of the 12 alfalfa fields sampled. In spite of some morphological variabililty, these strains were not taxonomically distinguishable from one another. They had different cultural characteristics (minimal, maximal, and optimal growth temperatures). Their pathogenicity was tested on alfalfa, garden pea, green bean, and garden beet. The green bean was lightly affected and a wide spectrum of pathogenicity was observed on alfalfa. Four pathogenicity groups were

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Konaté, Ibrahim, Abdelkarim Filali-Maltouf, and El Bekkay Berraho. "Diversity analysis of Moroccan carob (Ceratonia siliqua L.) accessions using phenotypic traits and RAPD markers." Acta Botanica Malacitana 32 (December 1, 2007): 79–90. http://dx.doi.org/10.24310/abm.v32i0.7031.

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SUMMARY. Diversity analysis of moroccan carob (Ceratonia siliqua L.) accessions using phenotypic traits and RAPD markers. The carob (Ceratonia siliqua L.) is a perennial leguminous (Caesalpinioideae) that grows as an evergreen shrub or tree. It’s an important component of the Mediterranean vegetation and its adaptation in marginal soils of the Mediterranean regions is important environmentally and economically. Phenotypic and genetic diversity among 10 Ceratonia siliqua accessions coming from different areas of Morocco were studied with morphometric and RAPD approaches. The analysis of discrim

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20

"Agro-morphological characterization of Bambara nut accessions [Vigna subterranea (L) Verdcourt] from Burkina Faso." Journal of Applied Biosciences 153 (September 30, 2020): 15727–44. http://dx.doi.org/10.35759/jabs.153.1.

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Objectives: The agro morphological diversity of Bambara nut remains poorly understood. In this study 90 Bambara nut accessions were assessed for phenotypic variability of agronomic and morphological traits. Methodology and results: A trial was conducted at Rollo (Bam province) on 90 accessions of Bambara nut of 3 agro ecological zones in Burkina Faso. Accessions were evaluated on 27 morphological characters. Result of qualitative traits analysis showed dominance of cream-coloured seeds, butterfly-grey eyes, and smooth yellowish-brown pods. The majority of quantitative traits were discriminant

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21

Aissi, Abdeldjalil, Yassine BEGHAMI, Olivier Lepais, and Errol Vela. "Analyse morphologique et taxonomique du complexe Quercus faginea (Fagaceae) en Algérie (Morphological and taxonomic analysis of Quercus faginea (Fagaceae) complex in Algeria)." Botany, September 24, 2020. http://dx.doi.org/10.1139/cjb-2020-0075.

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La systématique de Quercus faginea Lam. (s.l) (Fagaceae) reste encore indéfinie, d’autant plus qu’elle s’hybride avec d’autres espèces et qu’elle est polymorphe. Quatre sous-espèces ont été identifiées et présentement reconnues en péninsule ibérique et au Maroc, or, les données disponibles ne permettent pas de trancher entre les taxons présents en Algérie. Pour remédier au manque de données nécessaires, une analyse morphologique et taxonomique de treize populations du complexe dans le pays a été effectuée. Dans chacune, vingt feuilles et vingt bourgeons sur dix arbres matures ont été prélevés

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Dridi, Bouthaina Al Mohandes, Mohamed Loumerem, Samira Ibn Maaouia Houimli, Naouel Jabbes, and Samir Tlahig. "Caractérisation phéno-morphologique de quelques lignées de fève (Vicia faba L.) sélectionnées et adaptées aux conditions de culture dans les régions arides en Tunisie." Afrika Focus 24, no. 1 (2011). http://dx.doi.org/10.21825/af.v24i1.4996.

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The objective of the present study was to produce a pheno-morphological characterization of 13 faba bean lines selected by the Institute of Arid Regions from 42 local populations. The pheno-morphological variability of these lineages was observed and followed from planting through to seed maturity by biometric measurements and by qualitative evaluations on different plant parts. Morphological characteristics were described by using the UPOV (2000) descriptor. The analysis of results made it possible to distinguish between 2 groups based on precocity and hundred-seed weight. The first group was

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