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Showing 4 results for Adaptability
Study of Cultivation and Adaptability of Purple Coneflower (Echinaceae purpurea) in the North of Tehran
R. Omidbaigi,
Volume 6, Issue 2 (7-2002)
Abstract
Purple coneflower (Echinaceae purpurea (L.) Mnch) is one of the most important medicinal plants used by pharmaceutical industries in industrialized countries. The active substances of this plant are antiviral and are used as human immunostimulant. The plant of purple coneflower is not included in the Iranian flora. Therefore, the main aim of this study was to evaluate the adaptability of the plant to the conditions in the north of Tehran (Zardband region). The results from this research should contribute to large-scale production as a raw material for Iranian pharmaceutical industries. Comparison of means of the different characteristics was carried out using t-test at 5% level. Results showed that purple coneflower is adaptable to the climatic conditions in the north of Tehran and can be produced on a large scale. The suitable time for transplanting the seedling in the field was from 5 August to 5 September. Maintaining the purple coneflower until its fourth vegetative period is economical. Transplanting after this date produces woody stems and reduces both the herb yield and the quality of its active substances.
Comparison of Growth, Yield and Fruit Quality among Commercial Strawberry Cultivars in Chaharmahal and Bakhtiari Cold Zone
M. Shahmohamadi, A. R. Mohamad Khani, R. Barzegar, A. Azizian,
Volume 6, Issue 20 (7-2016)
Abstract

In order to grow strawberry in Chaharmahal and Bakhtiari, growth, yield and fruit quality was evaluated among eight commercial strawberry cultivars including: Selva, Camarosa, Pajaro, Paros, Queen eliza, Kurdestan and Merak. This experiment was conducted in Agriculture and Natural Resources Research Center of Shahrekord through a RCBD design with three replications for four years (2008-2011). Vegetative and phenologic traits, yield components and fruit quality were recorded. Significant difference was observed among cultivars in all of the measured traits. These differences showed that ecological requirements in strawberry are cultivar-specific. Genotype by year interaction was significant for most of the traits, indicating that genotypes respond differently to climatic conditions of different years. Among cultivars studied, Queen eliza was found superior to other cultivars in terms of fruit yield, size and weight. A greater number of crown and inflorescence per plant and a larger berry contributed to higher yield in Queen eliza. Since cultivar Kurdestan indicated adaptability to climatic conditions of cold regions and it has a unique aroma and flavor, it could be recommended for local markets.


Identification of adapted genotypes in sesame lines based on multi-trait selection
H. Zeinalzadeh-Tabrizi, S. Mansouri,
Volume 11, Issue 1 (4-2021)
Abstract
Identification of genotypes adapted to a particular region is of special interest to breeders and plant geneticists. In order to identify adapted genotypes in sesame lines based on multi-trait selection, an experiment was conducted in a completely randomized block design with four replications at Moghan Agricultural Research Station of Ardabil Agricultural and Natural Resources Research and Education Center during the years 2017 and 2018. The genetic materials evaluated in this study were consisted of 14 superior lines from preliminary yield trails of the three different regions evaluated in 2016 (Derived from the management of segregated generations in a pedigree way) and Oltan cultivar as a check. Combined analysis of variance showed that the genotype and genotype × year interaction effects were significant for all of the studied traits. Biplot analysis of sesame genotypes showed that the first two components explained the 55.3% of the total variations of traits. Which-won-where/what polygon pattern based on different traits of sesame genotypes showed that G3 and G8 had the highest yield and yield components such as plant height, number of capsules per plant and oil content, respectively. Based on comparing of genotypes with ideal genotypes biplot, Shukla stability index, superiority index and heat map analysis, genotypes G3, G8 and G9 were better than Oltan cultivar, thus identified as the best genotypes. These genotypes have the potential to be used in research-extension trials for introduction as a new cultivar for cultivation in Moghan region.

Evaluation of Seed Yield Stability of Chickpea Genotypes Using GGE Biplot Method
R. Karimizadeh, P. Pezeshkpour, A. Mirzaei, M. Barzali, K. Keshavarzi, P. Sharifi,
Volume 11, Issue 4 (1-2022)
Abstract 
In this study, 14 advanced chickpea genotypes selected from regional experiments with Adel and Azad, as control cultivars, were cultivated in a randomized complete block design with three replications in eight environments (Gonbad, Gachsaran, Ilam and Khorramabad in three, two, two and one years, respectively) in Iran during 2017-2020 growing seasons. Combined analysis of variance showed that environment, genotype and genotype by environment interaction (GEI) explained 43.5, 19.8 and 36.7% of the total variation of grain yield, respectively. The first and second principal components accounted for 50.89% and 19.39% of variation, respectively. The polygonal view of biplot showed that genotypes G11, G14 and G9 were the most adaptable genotypes for environments E2, E3, E6, E7, E8, E4 and E5 and G8, G5 and G13 for E1. Based on average tester coordinate (ATC) view, genotypes G11, G5, G13 and G14 were the most stable and high-yielding genotypes. The GGE-biplot based on genotype-focused scaling showed that genotypes G11, G14, G8, G9 and G13, in the circles around the ideal genotype, were the most preferred genotypes. The priority index (PI) showed that in all environments and favourable environments (environments with higher than average grain yields), genotypes G11, G9, G16, G13 and G14 and in unfavourable environments (environments with lower than average grain yields), genotypes G11, G13, G14, G12 and G5 were superior genotypes. Based on different biplot views as well as priority index, genotypes G11, G14 and G5 had grain yields higher than average yield and yield of Adel and Azad cultivars. Further, given their grain yield stability in all environments they can be suitable candidates for introduction of new cultivars.

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