Studies on stability of grains number from panicle to a collection of oats autumn (Avena sativa L.) genotypes

The study aimed at assessing stability the grains number from panicle to autumn oats, under the influence of climatic conditions. The study was conducted over a period of three years. The biological material consisted of 73 genotypes. The experimental data was obtained by performing biometric measurements. The experimental data was processed by various linear regression analysis modelesses: Finlay-Wilkinson, Hardwick-Wood, Muir, Wrike but also the concordance between the ranks of different models of appreciation. The values of grains number in panicle fluctuate according to the climatic conditions of the year, both as an average value and as intrapopulational variability. The Jeferson, Carie, Florina varieties, and the 4458, PA 725-4743, PA 822-818 lines exhibits a high dynamic stability associated with values above the average of the experience for the number of grains in panicle. In the case of this character, 53.10% of the genotype x environment interaction is due to heterogeneity of variances

STUDIES REGARDING THE VARIABILITY OF THE PLANT PRODUCTIVITY CHARACTERS OF THE BELL PEPPER (CAPSICUM ANNUUM VAR. TETRAGONUM)

The study tracked the evaluation of the characters that contribute to the plant production in a collection of bell pepper genotypes. The experimentation was done in field, under the usual technological conditions. The data collected by biometric measurements were statistically interpreted by variance analysis and by the setting of the selection indices (S, h2, ΔG). The biological material consisted of 20 landraces collected from the West of Romania. Most populations are similar to Globus variety in terms of fruit size. The Tomnatic II population is remarkable with many and small fruits, but also the Apateu I and Cenad populations which have the fruit weight on the plant significantly higher. For the fruit weight, the differences between the populations may be up to about 100 g (Şimian), which has the greatest heritability (0.83). In most populations, the heritability of this character is less than 0.50. The number of fruit per plant is influenced by environmental factors, but the expected genetic progress can be up to 5.98 fruit (Tomnatic II). The most common values are between 2 and 3 fruits. For the number of fruit per plant, few populations have a heritability of more than 0.50. The fruit weight on the plant can be improved by selection with a progress ranging from 21.43 g (Tomnatic I) to 340.73 g (Valcani). The heritability of this character is over 0.60 for nine populations. Considering these indices, the collected material is valuable for the selection process, but the selection must be longer. The studied populations of bell peppers are an important reservoir of genes for the breeding process, the variability of morphological characters being satisfactory

A New Approach to Dynamic Anthropometry for the Ergonomic Design of a Fashionable Personalised Garment

Background: A challenge for designers is to create fashionable and very well-fitting personalised garments (multi-layered) that have a suitable shape (balance and size) and provide the wearer with the desired degree of freedom. In this paper, the authors have developed an ergonomic solution for designing the pattern of a business casual men’s jacket by integrating the dynamic data of the body into the design process. Methodology: The pattern was elaborated by interactive design process based on mathematical relationships and the use of specific input data. The 3D virtual prototype was created in Clo3D (the static and typical dynamic positions of the mannequin). The dynamic data needed for the study were measured directly on 50 male subjects. These values were analysed by using the statistical method and then integrated into the design scenario in a specific way. The shapes of the new 3D prototypes were evaluated by examining the relationships between the constructive and longitudinal allowance along the back region as independent variables and sleeve angle and upper back tension as dependent variables. Results: By allowing a certain degree of dynamic effect in the design process, one can see that the personalized model of the casual business jacket with Ab (constructive allowance) = 4.5 cm and Aars (longitudinal allowance distributed along with the back height) = 3.6 cm is well balanced and fits the body. Conclusions: This design method can be used and further developed for other garment categories and customers by any design department that has the right IT tools to facilitate the personalized design process