Metric traits

Ebook "Quantifying functional biodiversity" synthesizes current methods used to quantify functional diversity, providing step-by-step examples for defining functional groups and estimating functional indices. The authors show how to compare communities, and how to analyze changes of diversity along environmental gradients, using real-life examples throughout.

103p tachieuhoa 28-01-2024 5 2   Download

Female fertility, a fundamental trait required for animal reproduction, has gradually declined in the last 2 decades in Japanese Black cattle. To identify associated genetic variants in Japanese Black cattle, we evaluated female fertility as a metric to describe the average inverse of the number of artificial inseminations required for conception from the first through the fourth parity (ANAI4) and conducted a genome-wide association study (GWAS) using 430 animals with extreme ANAI4 values from 10,399 animals.

14p vinarcissa 21-03-2023 4 1   Download

In study "Multidimensional scaling analysis of sensory characteristics and quantitative traits in wild apricots", a multivariate analysis method of metric and nonmetric multidimensional scaling analysis (MDS) was used to classify 43 wild apricot genotypes and 5 standard cultivars by using Euclidean distance.

13p lyhuyenthu 31-01-2023 9 2   Download

Heterosis, a multigenic complex trait extrapolated as sum total of many phenotypic features, is widely utilized phenomenon in agricultural crops for about a century. It is mainly focused on establishing vigorous cultivars with the fact that its deployment in crops necessitates the perspective of genomic impressions on prior selection for metric traits. In spite of extensive investigations, the actual mysterious genetic basis of heterosis is yet to unravel. Contemporary crop breeding is aimed at enhanced crop production overcoming former achievements.

19p vitzuyu2711 29-09-2021 4 1   Download

The high narrow sense heritability of carcass traits suggests that the underlying additive genetic potential of an individual should be strongly correlated with both animal carcass quality and quantity, and therefore, by extension, carcass value.

17p visilicon2711 20-08-2021 6 1   Download

The genetic variance of any morphometric or quantitative trait is indicated additive variance (heritable) and non-additive variance and comprise dominance and epistasis (non-allelic interaction) altered by environmental conditions (Iqbal et al., 2014; Kumar et al., 2017; Spaldon and Kumar, 2017).

15p caygaocaolon11 21-04-2021 10 1   Download

Core collections provide genebank curators and plant breeders a way to reduce size of their collections and populations, while minimizing impact on genetic diversity and allele frequency. Many methods have been proposed to generate core collections, often using distance metrics to quantify the similarity of two accessions, based on genetic marker data or phenotypic traits.

12p viconnecticut2711 28-10-2020 9 2   Download

Field experiment was conducted in 50 Chinese millet genetic resources to assess the genetic divergence for 12 metric traits through Principal Component Analysis. The ANOVA revealed existence of highly significant variation for all the traits examined. About 69.15 per cent of total variation accrued through Principal component analysis exhibited four Principal components (PC1-29.65%, PC2-16.94%, PC3-12.27% and PC4- 10.27%) retained based on the Scree plot and threshold Eigen value greater than one (>1). The PC1 with prime economical traits viz.

7p angicungduoc5 14-06-2020 14 2   Download

The present study was undertaken to find out the clustering pattern of 100 rice genotypes for 12 metric traits including five checks. Clustering of genotypes was done by following the method of Non Hierarchical Euclidean cluster analysis. All the genotypes were grouped into eight clusters revealing the presence of considerable amount of genetic diversity in the material for different studied traits. According to the results, Cluster V is having the largest cluster with maximum of 23 genotypes, followed by Cluster I (21 genotypes) and Cluster III (20 genotypes).

5p trinhthamhodang1212 06-04-2020 7 1   Download

Hundred foxtail millet genetic resources were studied to assess the magnitude of genetic diversity for 18 metric traits using Mahalanobis D2 Statistic (Tocher’s method). The results of the study showed that the genotypes were grouped into 11 distinct non-overlapping clusters suggesting availability of substantial genetic diversity.

10p cothumenhmong3 22-02-2020 19 0   Download

An investigation was conducted to assess the magnitude of genetic variability, heritability (broad sense) and genetic advance as per cent of mean in 100 foxtail millet genetic resources for 18 metric traits. The analysis of variance (ANOVA) revealed highly significant differences among the genetic resources for all the metric traits studied. Phenotypic coefficient of variation (PCV) was greater than genotypic coefficient of variation (GCV) for all the characters studied indicating that these characters were highly influenced by the environmental effects.

7p chauchaungayxua3 07-02-2020 14 0   Download

The present experiment was undertaken to study correlation and path co-efficient analysis for 12 metric and two quality traits in 11 genotypes including two checks. The genotypic correlation co-efficient were found to be of higher magnitude than the corresponding phenotypic correlation co-efficient in most of the cases. Grain yield was significant and positively correlated with number of tillers per plant, number of spikelet per panicle, number of grains per panicle and harvest index whereas significantly and negatively correlated with protein content.

6p nguathienthan2 26-12-2019 18 0   Download

The present investigation was carried out at Central Sericultural Research and Training Institute, Pampore, Jammu & Kashmir (J&K) during spring, summer and autumn, 2018 to study the performance of 24 bivoltine silkworm, Bombyx mori L, foundation crosses (12 Oval & 12 Constricted) under temperate climatic conditions. The rearing was carried out under uniformed laboratory condition by adopting standard method. These 24 bivoltine silkworm foundation crosses (FC) were evaluated for their performance in eight metric traits viz., fecundity (No.

11p nguaconbaynhay1 04-12-2019 10 0   Download