scholarly journals Phenotypic Diversity in the Hararge Coffee (Coffea arabica L) Germplasm for Quantitative Traits

2008 ◽  
Vol 2 (1) ◽  
Author(s):  
M Kebede ◽  
B Bellachew
Keyword(s):  
Coffea Arabica ◽  
Quantitative Traits ◽  
Phenotypic Diversity

scholarly journals Diversity of phenotypic characteristics of White Tailed-Yellow Chicken populations reared under free range system in Phitsanulok Province, Thailand

2019 ◽  
Vol 20 (5) ◽  
Author(s):  
SUPHAWADEE YAEMKONG ◽  
TUAN NGUYEN NGOC
Keyword(s):  
Body Weight ◽  
Body Length ◽  
Quantitative Traits ◽  
Wing Length ◽  
Phenotypic Diversity ◽  
Body Height ◽  
Phenotypic Characteristics ◽  
Positive Correlation ◽  
Free Range ◽  
Golden Yellow

Abstract. Yaemkong S, Tuan NN. 2019. Diversity of phenotypic characteristics of White Tailed-Yellow Chicken populations reared under free-range system in Phitsanulok Province, Thailand. Biodiversitas 20: 1264-1273.  The objective of this study was to evaluate phenotypic diversity of White tail-yellow chickens in Mueang District, Phitsanulok, Thailand. A total of 200 male chickens from the purposive samples were collected, and then analyzed by using descriptive statistics, correlation and least squares mean for subclasses of each factor. The results showed that the phenotypic of White tail-yellow Chickens had the highest white-yellow beak (60.29%), hin comb (65.50%), golden-yellow neck plumage (95.69%), back plumage (96.17%) and wing plumage (67.94%), white-black long curving tails (70.11%), black back tails (71.14%) and white-yellow shank (59.81%) for qualitative traits. The quantitative traits such as body weight, body height, body length, body width, wing length, shank length, and toes length were 2.78±0.58 kg, 61.95±3.77 cm, 24.93±1.66 cm, 16.62±1.91 cm, 41.85±2.52 cm, 12.72±0.77 cm, and 8.39±0.66 cm, respectively. The highest positive correlation was recorded between neck plumage and back plumage (r=0.70; p<0.01). Moreover, body weight was the highest correlation with wing length (0.58; p<0.01) whereas body length was the highest positive correlation with wing plumage (0.21; p<0.01). However, beak and comb had no significant effect on all traits (p>0.05) except for neck, back and wing plumage, long curving tail, back tail and shank color (p<0.05).

scholarly journals Transient structural variations have strong effects on quantitative traits and reproductive isolation in fission yeast

2016 ◽  
Author(s):  
Daniel C. Jeffares ◽  
Clemency Jolly ◽  
Mimoza Hoti ◽  
Doug Speed ◽  
Liam Shaw ◽  
...  
Keyword(s):  
Gene Expression ◽  
Reproductive Isolation ◽  
Cell Shape ◽  
Quantitative Traits ◽  
Phenotypic Diversity ◽  
Copy Number Variants ◽  
Nucleotide Polymorphisms ◽  
Structural Variations ◽  
Single Nucleotide ◽  
Sugar Utilization

AbstractLarge structural variations (SVs) in the genome are harder to identify than smaller genetic variants but may substantially contribute to phenotypic diversity and evolution. Here we analyze the effects of SVs on gene expression, quantitative traits, and intrinsic reproductive isolation in the yeast Schizosaccharomyces pombe. We establish a high-quality curated catalog of SVs in the genomes of a worldwide library of S. pombe strains, including duplications, deletions, inversions and translocations. We show that copy number variants (CNVs) frequently segregate within closely related clonal populations, are weakly linked to single nucleotide polymorphisms (SNPs), and show other genetic signals consistent with rapid turnover. These transient CNVs produce stoichiometric effects on gene expression both within and outside the duplicated regions. CNVs make substantial contributions to quantitative traits such as cell shape, cell growth under diverse conditions, sugar utilization in winemaking, whereas rearrangements are strongly associated with reproductive isolation. Collectively, these findings have broad implications for evolution and for our understanding of quantitative traits including complex human diseases.

scholarly journals Combining Ability and Molecular Marker Approach Identified Genetic Resources to Improve Agronomic Performance in Coffea arabica Breeding

2021 ◽  
Vol 5 ◽  
Author(s):  
Alexsandra Correia Medeiros ◽  
Eveline Teixeira Caixeta ◽  
Antonio Carlos Baião de Oliveira ◽  
Tiago Vieira Sousa ◽  
Vinícius de Moura Stock ◽  
...  
Keyword(s):  
Combining Ability ◽  
Coffea Arabica ◽  
Agronomic Traits ◽  
Phenotypic Diversity ◽  
Diallel Analysis ◽  
Molecular Data ◽  
Joint Analysis ◽  
Breeding Programs ◽  
Parent Selection ◽  
Selection Of

Plant breeding aims to develop cultivars with good agronomic traits through gene recombination and elite genotype selection. To support Coffea arabica breeding programs and assist parent selection, molecular characterization, genetic diversity (GD) analyses, and circulating diallel studies were strategically integrated to develop new cultivars. Molecular markers were used to assess the GD of 76 candidate parents and verify the crossing of potential F1 hybrids. Based on the complementary agronomic traits and genetic distance, eight elite parents were selected for circulating diallel analysis. The parents and 12 hybrids were evaluated based on 10 morpho-agronomic traits. For each trait, the effects of general and specific combining abilities, as well as the averages of the parents, hybrids, and predicted hybrids, were estimated. Crosses that maximize the genetic gains for the main agronomic traits of C. arabica were identified. Joint analysis of phenotypic and molecular data was used to estimate the correlation between molecular GD, phenotypic diversity (PD), phenotypic mean, and combining ability. The selection of parents that optimize the allele combination for the important traits of C. arabica is discussed in detail.

scholarly journals Phenotypic diversity of the tidal swamp rice (Oryza sativa L.) germplasm from South Kalimantan, Indonesia

2019 ◽  
Vol 13 ((03) 2019) ◽  
pp. 386-394
Author(s):  
Dindin H. Mursyidin ◽  
Purnomo ◽  
Issirep Sumardi ◽  
Budi S. Daryono
Keyword(s):  
Plant Height ◽  
Quantitative Traits ◽  
Phenotypic Diversity ◽  
Oryza Sativa L ◽  
Leaf Sheath ◽  
Phenotypic Traits ◽  
Rice Cultivars ◽  
Tidal Swamp ◽  
Wide Range ◽  
The Future

Tidal swamp rice is a valuable source for developing new rice cultivars in the future because they possess some important traits for, adapted to a wide range of abiotic and biotic stresses. In this study, twenty-seven cultivars of the tidal swamp rice, comprising 26 from the South Kalimantan and one of Sumatera Island, Indonesia (an outgroup), were characterized phenotypically. Following Biodiversity International procedure, 14 qualitative and 15 quantitative traits were observed. The results show that this germplasm has a unique diversity in phenotypic traits. The secondary branch of panicle was the highest diversity of qualitative traits with an index of 0.93. Similarly, the plant height was the highest for quantitative traits (0.70). The correlation analysis confirmed that plant height, strongly correlated to culm diameter, the number of tillers and grain ratio. The PCA indicated that several independent traits, such as coleoptile anthocyanin coloration, basal leaf sheath color, and grain length, have positively contributed to the diversity, accounting 62.99%. Based on PCA analysis, the tidal swamp rice were clustered into four groups. According to UPGMA, this germplasm separated into six main groups, where Sardani (an outgroup) was very closely related to Lakatan Pacar and most distantly to Siam Perak. This information would be useful for the future rice breeding program, particularly in developing new rice cultivars in the tidal swamp areas.

scholarly journals Phenotypic diversity for agro-morphological traits in pigeon pea landraces [(Cajanus cajan L.) Millsp.] cultivated in southern Benin

2019 ◽  
Vol 4 (1) ◽  
pp. 487-499 ◽  
Author(s):  
Fiacre Zavinon ◽  
Hubert Adoukonou-Sagbadja ◽  
Angelo Bossikponnon ◽  
Hermann Dossa ◽  
Corneille Ahanhanzo
Keyword(s):  
Coefficient Of Variation ◽  
Quantitative Traits ◽  
Phenotypic Diversity ◽  
Diversity Index ◽  
Pigeon Pea ◽  
Grain Legume ◽  
Legume Crop ◽  
Wide Range ◽  
Qualitative Variables ◽  
Range Of Variation

AbstractPigeon pea is an important but unfortunately neglected grain legume crop in Benin. In this study, the phenotypic diversity in 84 landraces from Benin and four advanced varieties were evaluated at two locations during two consecutive rainy seasons. Twelve quantitative and ten qualitative variables were recorded. A wide range of variation was observed in qualitative traits as well as in quantitative variables. The overall Shannon–Weaver diversity index ranged from 0.41 (pod hairiness) to 1.51 (seed colour). Analysis of variance revealed highly significant differences among accessions for all quantitative traits, except the number of seeds per pod, the days to maturity and the seed yield per plant. In all quantitative traits, phenotypic coefficient of variation was higher than genotypic coefficient of variation indicating a substantial environmental effect on their variability. However, some traits (days to flowering, pod width, number of secondary branches and 100 seed weight) showed great value of heritability. Hierarchical clustering on principal components subdivided the collection from Benin into two groups that were clearly separated from the group of advanced varieties. The results gathered from this study have important implications for pigeon pea germplasm characterization and conservation while the inferred phenotypic groups could be used for parental selection and heterotic crossings in pigeon pea breeding in Benin.

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