Forough Fallahi; Vahid Abdossi; Mahmoud Bagheri; Marzieh Ghanbari Jahromi; Hamid Mozaffari
Abstract
In order to select suitable parents for breeding purposes, one must have sufficient knowledge of genetic diversity and germplasm classification. It was for this reason that a study was conducted in 2019 at the Seed and Plant Research Institute in Karaj in order to identify and classify 17 eggplant genotypes ...
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In order to select suitable parents for breeding purposes, one must have sufficient knowledge of genetic diversity and germplasm classification. It was for this reason that a study was conducted in 2019 at the Seed and Plant Research Institute in Karaj in order to identify and classify 17 eggplant genotypes based on the randomized complete block design. This stud measured 19 morphological traits such as number of days to flowering, plant height, number of stems per plant, number of nodes, and internodes, weight, and fruit yield as well as total phenol content, total anthocyanin content and glico-aldeid solasonin. The results of the analysis of variance revealed a significant difference for all the traits (p≤0.01). The range of variation showed great genetic diversity among cultivars, which can be useful for different breeding purposes, lower plant height to prevent dormancy. Greater number of stems and flowers are important to achieve higher yield, wherein 13321 genotypes showed lower height among genotypes. Cluster analysis classified the studied genotypes into three groups, and separated white eggplants from colored ones correctly. The PCA also confirmed the results of cluster analysis, showing that the color eggplants had more fruit yield, lower levels of solasonine, and lower days to maturity than white eggplants. However, the color eggplants that were used in this research were breeding cultivars; therefore, the use of breeding methods would be important to improve the quality and quantitative of eggplant genotypes.
Ali Yazdan panah gohari; Marzieh Ghanbari Jahromi; Vahid Zarrin nia
Abstract
Mycorrhiza is a common group of microorganisms that can establish symbiotic relations with plants. To evaluate symbiosis and compatibility between a collection of chicory seeds and mycorrhizal fungi, through inoculation, a factorial experiment is set up in a randomized complete block design. Two batches ...
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Mycorrhiza is a common group of microorganisms that can establish symbiotic relations with plants. To evaluate symbiosis and compatibility between a collection of chicory seeds and mycorrhizal fungi, through inoculation, a factorial experiment is set up in a randomized complete block design. Two batches of chicory seed (Ardabil and Fars) are inoculated by two species of mycorrhizal fungi (Glomus mosseae and Glomus intraradices) with the control group of the seeds not being inoculated at all. Three replicates have been arranged in a greenhouse. The research aims at examining how the two species of mycorrhizal fungi affect several plant traits and the amounts of phytochemical compounds (i.e. phenol, flavonoids, antioxidant activity, chlorophyll a and b, total chlorophyll), fresh and dry weights of roots and root length. It also deals with chicory roots’ ability to absorb several elements. Results show that seed batch and mycorrhizal fungi have significant impacts on vegetative traits, chlorophyll content, phenol, total flavonoids, and antioxidant activity in plants. The highest amounts of total phenol production (3.77 mg/g fresh weight), total flavonoids (1.21 mg/g fresh weight), antioxidant activity (5.23 mg/g fresh weight), root growth and chlorophyll content are observed in the Ardabil batch when treated with G. intraradices. The lowest amounts of these values are recorded in the Fars batch where no mycorrhizal inoculation has been applied. The two batches of seeds grow into plants with different growth rates and phytochemical compositions. The growth parameters of plants improve in the case of mycorrhizal inoculation. The effects of G. intraradices are more efficient than those of G. mosseae in symbiosis with chicory plants. Based on the results of the present study and considering the compatibility of mycorrhiza with the environment, the use of these fungi can substantially increase the yield of various plants, especially medicinal plants.
Javad geraili; Mehdi Hadadinejad; Hossein Moradi; Marzieh Ghanbari Jahromi
Abstract
Non-Chilling Peel Pitting (NCPP) is a physiological post-harvest and storage disorder in the peel of many citrus cultivars fruits. The purpose of the present study was to determine the effects of the steroidal plant hormone, 24-epibrassinolide (0, 5 and 10 mg L-1 ) and relative humidity in dry storage ...
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Non-Chilling Peel Pitting (NCPP) is a physiological post-harvest and storage disorder in the peel of many citrus cultivars fruits. The purpose of the present study was to determine the effects of the steroidal plant hormone, 24-epibrassinolide (0, 5 and 10 mg L-1 ) and relative humidity in dry storage (RH =30% and 20) in compare to normal (RH =70% and 6OC), on the shelf life of Thomson-Novel sweet orange. The experiment was performed as factorial arrangement in CRD during 2015 winter for 30 days in three replicates and 10 . Characteristics such as weight loss, NCPP, open stomata, total soluble solids, titrable acid, leakage, Catalase and Malondialdehyde activity were measured in fruits. The results showed that drought stress significantly increased weight loss (9.67%), NCPP (33.3% code) and Catalase activity (0.13682) in fruits skin. The maintenance of fruits in dry environments led to a reduction in the open stomata of skin from 55.3 to 36.1%, which improved via application of 24-epibrassinolide, as well as normal storage (51.1%). According to our results, it can be concluded that 5 mg L-1 24-epibrassinolide concentration consider to its significant effect on reducing weight loss rate, NCPP and Catalase activity in fruits skin.