Atefeh Beilari; Jamal-Ali Olfati; Masood Esfahani; Nader Pirmoradian
Abstract
This study aims at evaluating the yield of cucumber genotypes in two seasons, and identifying cucumber genotypes with high yield and stability. The research has been carried out in the greenhouse of the Department of Horticultural Sciences, University of Guilan, as a factorial experiment in a completely ...
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This study aims at evaluating the yield of cucumber genotypes in two seasons, and identifying cucumber genotypes with high yield and stability. The research has been carried out in the greenhouse of the Department of Horticultural Sciences, University of Guilan, as a factorial experiment in a completely randomized design in autumn and spring seasons with nine cucumber genotypes in three replications. Results show that in terms of number of female flowers in autumn and spring, genotype C1 with an average of 16.7 per plant and genotype C8 with an average of 7.0 per plant have been the best, respectively. Also, in terms of leaf area, C10 genotype with an average of 2866.6 cm2 in autumn and C8 genotype with an average of 9340.990 cm2 in spring outperform the rest and can be used to achieve suitable hybrids for each growing season. Results of principal components analysis and population biplot show that C8 genotype is a suitable genotype for cultivation in two cropping seasons in terms of stability of yield-related traits and vegetative traits. Finally, in terms of number of fruits, genotype C1 with an average of 5.0 per plant in autumn, and C10 genotype with an average of 5.0 per plant in spring have been superior.
Hamid Jabbari; Hamid Reza Fanaei; Farnaz Shariati; Hamid Sadeghi Garmarodi; Mohamad Abasali; Amir Hasan Omidi
Abstract
This study evaluates the genetic diversity of 122 safflower genotypes from the institute of plant genetics and crop plant research (IPK) and International Maize and Wheat Improvement Center (CIMMYT). It compares their agronomic characteristics with five Iranian Safflower cultivars. Conducted at research ...
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This study evaluates the genetic diversity of 122 safflower genotypes from the institute of plant genetics and crop plant research (IPK) and International Maize and Wheat Improvement Center (CIMMYT). It compares their agronomic characteristics with five Iranian Safflower cultivars. Conducted at research field of Seed and Plant Improvement Research Institute in Karaj between 2017 and 2018, the experiment uses an Augmented with randomized complete block design. Results indicate high genetic variation in the germplasm. Among safflower genotypes, thirty-six genotypes without thistle, eighty-one genotypes with thorns, and ten genotypes with few thistle have been observed. Principal component analysis helps identifying three main components that account for 56.5% of the total variations. The first and second components account for 29.5% and 15.9% of the total variation, respectively. These are named as a yield components and phenology and plant architecture, respectively. Safflower genotypes are divided into four groups by principal components analysis (PCA). Genotypes in the first groups have the higher grain yield than others. Genotype No. 70 with the highest grain yield (5667 kg.ha-1) is placed in this group. Numerical values of yield components such as 1000-seed weight, number of heads, and number of seeds per plant in the third group stand higher than other groups. Generally, German genotype No. 70 with high yield and genotype No. 45 with early flowering can be used in safflower breeding programs.