scholarly journals Primary morphological characterization of West African dwarf (Djallonk) ewes from Cte dIvoire based on qualitative and quantitative traits

2019 ◽  
Vol 11 (2) ◽  
pp. 16-28
Author(s):  
K. Edouard N’Goran ◽  
G. Severin Kouadja ◽  
N. Cyrille Kouassi ◽  
N. Etienne Loukou ◽  
Jean Yves Eka ◽  
...  
2020 ◽  
Vol 79 (04) ◽  
Author(s):  
Amarjeet Kumar ◽  
N. K. Singh ◽  
Sneha Adhikari ◽  
Anjali Joshi

Germplasm enhancement seems to be an essential part of a breeding programme to improve resiliency, adaptability and productivity of the crops. To develop and diversify the maize germplasm, teosinte a wild relative of maize was integrated in crossing programme and BC1F4 lines were developed. Five BC1F4 lines along with teosinte and maize inbred DI-103 were characterised using quantitative characters and molecular markers. Morphological characterization was done with the help of visual parameters and quantitative traits and for molecular characterization fifty six SSR markers were used. SSR data were analysed with the help of software Mapmaker and twelve linkage groups were generated. Maximum allelic contributions from parent teosinte were found in the introgressed line AM-5 (53.4%) followed by AM-12 (48.9 %), whereas, least contribution of 34.1 % was found in AM-7. The maximum genetic distance among the introgressed lines was observed between AM-2 and AM-9 (0.75) followed by AM-2 and AM-7 (0.70), AM-7 and AM-9 (0.70). The maximum number of cob was found in AM-5 (5.00) followed by AM-2 (4.00). Grain yield per plant was found highest for AM-2 (100.00 g) followed by AM-12 (80.00 g), while, least value was observed for AM-7 (42.00 g). The results indicated differential parental contributions which leads to diversification in the progenies derived from diverse crosses in maize and further opined that such crosses seems to be essential for creating adapted germplasm to whom breeders are looking for.


2013 ◽  
Vol 197 ◽  
pp. 186-191 ◽  
Author(s):  
Aneta Gądek-Moszczak ◽  
Sabina Żmudka

The main goal of the study was working out the method of qualitative and quantitative analysis of the microstructure on 3D images of the polypropylene composites with Tuf (type of rock consisting volcanic ash) particles. Three types of composite were analyzed: with 10, 15 and 25% of Tuf. The standard morphological parameters were indicated that describes size, shape, and distribution of Tuf particles in the matrix. The morphological characterization of examined microstructure was compared with mechanical properties. The optimal from the point of mechanical properties composition of this composite were proposed.


2018 ◽  
Vol 53 (3) ◽  
pp. 359-373
Author(s):  
Patricia Diez De Ulzurrun ◽  
María B. Acedo ◽  
María E. Garavano ◽  
Valeria Gianelli ◽  
Verónica N. Ispizúa

Morphological characterization of Conyza blakei, Conyza bonariensis var. bonariensis, Conyza sumatrensis var. sumatrensis and Conyza lorentzii in the southeast of Buenos Aires (Argentine). The genus Conyza Less. includes ruderal species, which grow of ruderal habitat, roadsides and railways. They have also been cited as pasture weeds, annual and perennial crops under direct sowing (SD) systems, adapting to these slightly disturbed environments since they are sensitive to soil removal. The taxonomic identification of Conyza species linked to morphological characters is difficult in vegetative stages, since this genus has highly related and polymorphic species. With the objective of morphologically characterizing Conyza blakei, C. bonariensis var. bonariensis, C. lorentzii and C. sumatrensis var. sumatrensis were recorded 19 morphological characters (12 vegetative and 7 reproductive) qualitative and quantitative, in 35 plants of each species. These characters were analyzed by Multivariate Analysis (Analysis of Components and Main Coordinates). The morphological characterization made it possible to detect phenotypic differences between the Conyza species analyzed. The analysis of main coordinates allowed to differentiate the species both at a reproductive and vegetative level, while the analysis of main components only allowed to differentiate the species in reproductive stage.


2017 ◽  
Vol 18 (4) ◽  
pp. 1367-1376
Author(s):  
INCE RADEN ◽  
CANDRA CATUR NUGROHO ◽  
SYAHRANI SYAHRANI

Raden I, Nugroho CC. Syahrani. 2017. Identification and characterization of morphological diversity of Lemba (Curculigo latifolia) in East Kalimantan, Indonesia. Biodiversitas 18: 1367-1376. Lemba (Curculigo latifolia) is Kalimantan’s land prospective for commercial cultivation because its leaf fiber has been traditionally utilized as fiber source for ulap doyo woven cloth; its fruit as sweetener; and its root as medicinal herb. To this days, only a few of research has been conducted on lemba in East Kalimantan or even in Indonesia, including studies on lemba plant phenotype suitable for weaving material. Thus, a research about identification and morphological characterization of lemba cultivars is necessary to identify and characterize lemba plant in East Kalimantan to reveal phenotypic variability in both quantitative and qualitative traits that can be utilized as the source of germplasm for the plant breeding program. This study was carried out in three Sub-districts, i.e.: Tenggarong Sub-district (Kutai Kartanegara District), Kota Bangun Subdistrict (Kutai Kartanegara District), and Jempang Sub-district (West Kutai District). Data collection was done by observation, and measurement of quantitative and qualitative traits of lemba plant. Descriptive analysis was applied on the morphological traits data, while correlation analysis was performed to reveal relationship between the qualitative and quantitative morphological traits by using software Minitab v.14.12. Phenotypic variability was determined based on the standard deviation. Principal component analysis and cluster analysis of the data were performed by using software SPSS v.11.6. The variance value of the 33 observed lemba plant accessions from the three Sub-districts indicated that the phenotypic variability of the qualitative traits was narrow while that of the quantitative traits was broad. There are three principal components that account for the observed variability with a cumulative variance of 96% which is obtained from 19 observed traits. Cluster analysis at similarity 95% indicates that there are five lemba accessions groups based on only qualitative, only quantitative, or based on combined qualitative and quantitative traits.


Genetika ◽  
2014 ◽  
Vol 46 (1) ◽  
pp. 199-207 ◽  
Author(s):  
Emina Mladenovic ◽  
Janos Berenji ◽  
Vladislav Ognjanov ◽  
Mirjana Ljubojevic ◽  
Jelena Cukanovic ◽  
...  

The aim of this study is collecting and preserving of unique Cucurbita pepo germplasm in Serbia. This study also describes the intraspecific variation of C. pepo within twenty germplasm accessions. Conservation work aimed to develop a representative core collection of C. pepo germplasm, to guide future studies and breeding of its ornamental use. A wide range of C. pepo germplasm was collected from diferent parts of the world. Nineteen variables were recorded in 20 varieties to determine the overall degree of polymorphism and to detect similarities among them. Qualitative traits of fruit such is shape, color and texture, showed immense variation. Coefficient of variation were highest for fruit length, fruit weight and number of fruits per plant (CV=56.69161.32%), while they were the lowest for leaf length (CV=20.65%). Morphological characterization is need to facilitate the use of C. pepo varieties in breeding work. Based on the PCA results, 20 accessions of squash are separate in five groups. Those groups are unique in qualitative and quantitative traits. Knowledge of genetic divergence among varieties is essential for breeding.


2019 ◽  
Vol 41 (5) ◽  
Author(s):  
Maria Gabriela Fontanetti Rodrigues ◽  
Tatiane Paes dos Santos ◽  
Antonio Flávio Arruda Ferreira ◽  
Laís Naiara Honorato Monteiro ◽  
Eduarda Sayuri Nakanishi ◽  
...  

Abstract Fig tree (Ficus carica L.) is a fruit of great importance worldwide, being able to be implanted as new source of agricultural variability. The aim of the present work was to characterize the active germplasm bank of fig trees by means of morphological descriptors of 45 fig accessions at the Faculty of Agrarian and Technological Sciences, Campus of Dracena, FCAT / UNESP aiming at the recognition of the quality and genetic variability potential of the species. Thus, their biometric characteristics were evaluated by qualitative and quantitative descriptors of leaves and fruits. Fig tree accessions were characterized by means of the morphological characteristics of leaves and fruits, identifying AGB with high phenotypic variability and well adapted to the region and, by the analysis of the qualitative and quantitative characteristics, it was concluded that the most divergent accessions presented characteristics of agronomic interest, allowing the selection of features in order to subsidize conservation works, genetic improvement and crop production.


2017 ◽  
Vol 13 (1) ◽  
pp. 82
Author(s):  
F.A. Aluko ◽  
A.A. Ageh ◽  
A.E. Salako ◽  
M.O. Ozoje ◽  
H.A. Awojobi ◽  
...  

1970 ◽  
Vol 8 (1) ◽  
pp. 79-82 ◽  
Author(s):  
S Faruque ◽  
NU Siddiquee ◽  
MA Afroz ◽  
MS Islam

The Phenotypic characteristics of three genotypes of native chicken comprising of Non-descript Desi (ND), Hilly (H) and Naked Neck (NN) were studied. A total of 180 individual chickens (Male: ND= 20; H= 20 and NN=20; Female: ND= 40, H=40 and NN = 40) were characterized under intensive management system for qualitative and quantitative traits. The results indicated that the predominant plumage color of three types of native chickens was black brownish (33.33%) followed by white with black tips (28.33 %) and red brownish (18.33%). Values indicate that 35% of native chickens had whitish shank color followed by yellowish 31.68%; black 11.66 % and others 21.67 %. All hens of ND, H and NN laid light brown (62.42%) to cream or off white (30.28%) colored eggs. Variations were also found on quantitative traits such as shank length, body weight and reproductive traits on intensive management system. number of eggs/ hen from starting to ten months of laying were 108, 104 and 112, respectively in ND, H and NN genotypes. Three native chicken genotypes showed distinct physical variations for both qualitative and quantitative traits under intensive management system. Keywords: Native chicken; Quantitative traits; Qualitative traitsDOI: 10.3329/jbau.v8i1.6402J. Bangladesh Agril. Univ. 8(1): 79-82, 2010


2011 ◽  
Vol 11 (3) ◽  
pp. 232-240 ◽  
Author(s):  
Eduardo Alano Vieira ◽  
Josefino de Freitas Fialho ◽  
Fábio Gelape Faleiro ◽  
Graciele Bellon ◽  
Kenia Graciele da Fonseca ◽  
...  

The purpose of this study was to estimate the genetic divergence in sweet cassava accessions by molecular markers and quantitative and qualitative characters, as well as determine the correlation between these estimates. Sixteen sweet cassava accessions of the Regional Cassava Germplasm Bank of the Cerrado were evaluated under field conditions, for 13 quantitative and 33 qualitative characters. In the laboratory, the accessions were evaluated with RAPD markers. Subsequently, matrixes of genetic dissimilarity/distance among the accessions were estimated based on molecular markers and quantitative and qualitative characters. Besides, the significance of the correlation between the matrixes was estimated. The RAPD, qualitative and quantitative data indicated the existence of high divergence among the accessions. The divergences estimated by molecular markers and by quantitative traits were weakly associated with each other and moderately with the divergence estimated by qualitative characters.


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