scholarly journals Variation for qualitative and quantitative traits and identification of trait-specific sources in new sorghum germplasm

2010 ◽  
Vol 61 (8) ◽  
pp. 609 ◽  
Author(s):  
H. D. Upadhyaya ◽  
Shivali Sharma ◽  
B. Ramulu ◽  
Ranjana Bhattacharjee ◽  
C. L. L. Gowda ◽  
...  
Keyword(s):  
Wild Species ◽  
Quantitative Traits ◽  
Phenotypic Diversity ◽  
Hierarchical Cluster ◽  
Agronomic Performance ◽  
Breeding Programs ◽  
Large Variability ◽  
Qualitative And Quantitative ◽  
Sorghum Germplasm ◽  
Germplasm Accessions

Assembling, collecting and characterising the unique germplasm accessions for morphological and agronomic characteristics are essential activities of a dynamic genebank. The phenotypic diversity and agronomic performance of 667 newly acquired sorghum germplasm accessions, representing five basic races, eight intermediate races and two wild species, originating from 34 countries were assessed for seven qualitative and eight quantitative traits. Large variability was observed among these accessions for various qualitative and quantitative traits. Trait-specific accessions for early flowering (108), short plant height (8), medium panicle exsertion (34), and medium-sized seeds (78) have been identified. The diverse trait-specific promising accessions have the potential for their utilisation in future breeding programs for developing improved sorghum cultivars with a broad genetic base. The hierarchical cluster analysis grouped five races, six intermediate races, and two wild species into three clusters. The present study has played a significant role in filling up the gaps and has also identified region(s) to carry out future explorations, and in providing the trait-specific germplasm for use by the breeders.

Evaluation of Ethiopian chickpea (Cicer arietinum L.) germplasm accessions for symbio-agronomic performance

2012 ◽  
Vol 28 (4) ◽  
pp. 338-349
Author(s):  
Gemechu Keneni ◽  
Endashaw Bekele ◽  
Fassil Assefa ◽  
Muhammad Imtiaz ◽  
Tolessa Debele ◽  
...  
Keyword(s):  
Cicer Arietinum ◽  
Seed Size ◽  
Agronomic Performance ◽  
Agronomic Characters ◽  
Fixed Nitrogen ◽  
Breeding Programs ◽  
Legume Crop ◽  
Genetic Potential ◽  
Germplasm Accessions ◽  
Selection Of

AbstractChickpea (Cicer arietinum L.) is an economically and ecologically important food legume crop. Ethiopia has a large collection of chickpea germplasm accessions; but, it has not been extensively characterized for desirable sources of agronomic and symbiotic significance for use in breeding programs. A study was conducted at two locations (Ambo and Ginchi) in 2009/2010 to characterize and evaluate Ethiopian chickpea germplasm accessions for symbiotic and agronomic performance. One hundred and thirty-nine germplasm accessions were evaluated with 16 other genotypes including non-nodulating reference checks. Differences among genotypes, locations and genotype by location interaction effects were significant for a number of characters. A number of accessions better performing over the improved genotypes were identified for both symbiotic and agronomic characters. The amount of fixed nitrogen ranged from 13 to 49% in foliage, 30 to 44% in grain and 28 to 40% in total above-ground biomass. Grain yield performance varied from 31 to 70 g per 5 plants and seed size ranged from 82 to 288 g per 1000 seeds. For both symbiotic and agronomic characters, landraces were found to be overwhelmingly superior to introduced genotypes, except for seed size, where the best genotypes were all from exotic sources. The result indicated that Ethiopian chickpea landraces have better genetic potential for improving a number of symbiotic and agronomic characters over the varieties currently in use. Selection of best individuals within and among the accessions would be expected to be effective.

scholarly journals Horticultural and Potential Breeding Value of Sugar Pea Landraces from Northwestern Spain

HortScience ◽  
1996 ◽  
Vol 31 (5) ◽  
pp. 843-845 ◽  
Author(s):  
J.M. Amurrio ◽  
A.M. de Ron ◽  
M. Santalla
Keyword(s):  
Quantitative Traits ◽  
Correlation Coefficients ◽  
Breeding Value ◽  
Fresh Weight ◽  
Breeding Programs ◽  
Physical Quality ◽  
Qualitative And Quantitative ◽  
Northwestern Spain ◽  
Length Width ◽  
Parental Material

Twenty sugar pea (Pisum sativum L.) landraces common to northwestern Spain (Pontevedra), and potentially of interest as parental material, were evaluated at two locations and for 2 years to study the diversity among them for plant and pod physical quality traits. The main objective was to identify landraces that could be included in breeding programs. Highly significant differences among landraces were found for most of the pod traits, such as length, width, length/width index, fresh weight, and flowering date. Genotype–environment interactions were demonstrated for only three traits of the 10 investigated. High values for correlation coefficients were mostly found for pod traits, but highly significant ones (i.e., P ≤ 0.01) were found for traits other than for pods. Most of the landraces were variable for qualitative and quantitative traits. PSM-0070, PSM-0113, and PSM-0116 were superior for earliness and pod physical quality, but were heterogenous. PSM-0064, PSM-0066, PSM-0117, and PSM-0118 lacked pod parchment.

scholarly journals Genetic Characterization of Tunisian Lime Genotypes Using Pomological Traits

2020 ◽  
Vol 28 (1) ◽  
pp. 65-76
Author(s):  
Olfa Saddoud Debbabi ◽  
Selma Ben Abdelaali ◽  
Rym Bouhlal ◽  
Sabrine Zneidi ◽  
Nasr Ben Abdelaali ◽  
...  
Keyword(s):  
Quantitative Traits ◽  
Phenotypic Diversity ◽  
Diversity Index ◽  
Principal Component ◽  
Fruit Shape ◽  
Ex Situ ◽  
Breeding Programs ◽  
Wiener Diversity Index ◽  
On Farm

AbstractCitrus genus includes a wide number of species that have been long cultivated and well adapted in Tunisia. It is represented by small number of plantations and considered as underutilized in Tunisia. Our goal was to genetically characterize Tunisian lime genotypes to obtain data useful for gene conservation and breeding purposes. The survey of genotypes was conducted in the Cap Bon region, where citrus cultivation is the most spread. Sixteen quantitative and 19 qualitative parameters were evaluated. The observed accessions belonged to three different species: Citrus limetta, Citrus latifolia (limes Byrsa), and Citrus limettioides (limes of Palestine) according to Tanaka classification. Principal component analysis confirmed these classifications. Four-cell analysis (FCA) was used to determine the most threatened genotypes. Quantitative traits were evaluated and allowed the discrimination between genotypes. Many quantitative traits of fruit and juice were highly positively and significantly correlated. Phenotypic diversity was determined using Shannon–Wiener diversity index (H’). The highest value of diversity index was observed for both vesicle thickness and thickness of segment walls (H’ = 0.98). Intermediate values were observed for both fruit axis (H’= 0.49) and pulp firmness (H’ = 0.43). However, fruit shape (H’ = 0.24), shape of fruit apex (H’ = 0.24), and vesicle length (H’ = 0.33) presented the lowest values of diversity index. Current findings will be useful to conserve threatened genotypes ex situ and on farm and also will guide strategic conservation on Citrus genetic resources for future breeding programs.

scholarly journals Evaluation of Agro-morphological Traits in 20 Genotypes of Curcuma aeruginosa Roxb.

2019 ◽  
Vol 3 (2) ◽  
pp. 42-51
Author(s):  
Waras Nurcholis
Keyword(s):  
Morphological Traits ◽  
Principal Component ◽  
Hierarchical Cluster ◽  
Leaf Length ◽  
Morphological Data ◽  
Similarity Analysis ◽  
Breeding Programs ◽  
Qualitative And Quantitative ◽  
Recorded Data ◽  
Number Of Leaves

The present study aimed to evaluate different agro-morphological traits among twenty genotypes of Curcuma aeruginosa Roxb. and three varieties of Curcuma zanthorrhiza Roxb. Agro-morphological data traits were investigated based on qualitative and quantitative parameters from PPVFRA descriptors with modification. All the recorded data was analyzed through SPSS 16.0 and R 3.4.2 for ANOVA and similarity analysis, respectively. Significant differences (P <0.05) were observed in the traits studied of the habit of the rhizome, the shape of the rhizome, length of primary rhizome, number of mother rhizome, plant height, pseudostem diameter, number of leaves, leaf length, leaf width, and number of shoots. Hierarchical cluster analysis (HCA) classified the genotypes into three groups. The principal component analysis (PCA) were showed consistent with results of the HCA. These genotypes could be used as novel genotype in agricultural biochemistry for breeding programs.

scholarly journals Phenology of the production of flowers and fruits of wild and hybrid species of the genus Passiflora

2018 ◽  
Vol 40 (2) ◽  
Author(s):  
Danilo Akio de Sousa Esashika ◽  
Fábio Gelape Faleiro ◽  
Nilton Tadeu Vilela Junqueira
Keyword(s):  
Central Region ◽  
Wild Species ◽  
High Potential ◽  
Passion Fruit ◽  
Brazilian Savanna ◽  
Breeding Programs ◽  
Hybrid Species ◽  
Floral Buds ◽  
Sour Passion Fruit

Abstract Wild species of passion fruit have characteristics that could be used in the passiflora culture, among them the production of fruits in the off-season of the sour passion fruit. The objective of this work was to evaluate the phenology of flowers and fruits production in wild species cultivated in the Brazilian Savanna Central Region. For each access, a 1-meter-long strip (2 m2) was evaluated for the presence of flowers and fruits from January 2015 to December 2016. The hybrid and wild species of passiflora that produce floral buds, flowers and fruits during the off-season of passion fruit sour include: BRS Céu do Cerrado (P. incarnata x P. edulis), P. alata Dryand, P. bahiensis Klotzsch, P. coccinea Aubl., P. maliformis L., P. quadriglandulosa Rodschied, P. auriculataKunth, P. decaisneana G. Nicholson, P. sidifolia M. Roem., P. suberosa L., P. tholozanii Sacco, P. quadrangularis x P. alata. It was also verified the presence of species and hybrids with high ornamental potential due to the beauty of their flowers and their production during the whole year, such as: P. suberosa L., P. tholozanii Sacco, P. coccinea x P. setacea, P. coccinea x P. quadrifaria. These species and hybrids have high potential for passiflora breeding programs as a source of genes of interest.

scholarly journals Phenotypic diversity of horse breeds used in sports activities, employing multivariate analysis

2021 ◽  
Vol 19 (1) ◽  
pp. e0401
Author(s):  
Marcos P. G. Rezende ◽  
Julio C. Souza ◽  
Carlos H. M. Malhado ◽  
Paulo L. S. Carneiro ◽  
Johnny I. M. Araujo ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Principal Components ◽  
Phenotypic Diversity ◽  
The Body ◽  
Breeding Programs ◽  
Mato Grosso ◽  
Canonical Variables ◽  
Horse Breeding ◽  
Quarter Horse ◽  
Euclidean Distances

Aim of study: Sports involving horses have notable financial importance. Breeds are evaluated to find the best-suited ones for a specific sport category. Phenotypic diversity using biometric markers was evaluated for Quarter Horse (QH), Arabic (AR), English Thoroughbred (ET), and Brazilian Equestrian (BE) horse breeds.Area of study: Mato Grosso do Sul-Brazil.Material and methods: Lengths, widths, and circumference measures of 268 horses were collected. These measures were used to estimate conformation indexes. The size-free canonical discriminant analysis was used to remove the size effect on the animal's shape. The similarity among breeds (by sex) was evaluated employing multivariate analysis (canonical analysis, MANOVA, principal components, Euclidean distances, and grouping through complete linkage), considering all linear measures and conformation indexes (included in the analysis of principal components).Main results: Four canonical variables (CANs), each one representing an equation to interpret the morpho-functionality of breeds “sustentation”, “structure”, “frame”, and “equilibrium”, were retained. The breeds presented differences when the CANs were simultaneously considered. Differences mainly were the size and the thickness of the body as well as the ability of the animal to move. ET, QH, and BE demonstrate a well-defined biometric profile. These three breeds clustered separately from AR breed.Research highlights: Canonical variables allow to verify the functional aptitudes since the responses were close to conformation indices commonly used as horse skill estimators. The implementation of these variables as selection criteria in horse breeding programs require further studies in larger populations of horses for a confirmation of the present results.

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