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Mahla Khalili Bourang; Mohammadreza Hassandokht; Vahideh Nazeri; Abdorahamn Rasoulnia; Ghorban Didehbaz Moghanloo
Abstract
The aim of this study was to investigate the genetic diversity and phylogenetic relationships of 14 populations of five species of Rumex, including R. chalepensis, R. kandavanicus, R. pulcher, R. crispus and R. tuberosus from Ardabil and Khorasan Razavi provinces using morphological traits. The studied ...
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The aim of this study was to investigate the genetic diversity and phylogenetic relationships of 14 populations of five species of Rumex, including R. chalepensis, R. kandavanicus, R. pulcher, R. crispus and R. tuberosus from Ardabil and Khorasan Razavi provinces using morphological traits. The studied traits included leaf length, leaf width, number of leaves per plant, aerial fresh and dry weight, chlorophyll a, chlorophyll b, carotenoids, phenol and antioxidants. Studies of morphological and phytochemical traits on farm and greenhouses showed that the highest coefficient variation for morphological traits related to aerial fresh and dry weight and number of leaves per plant, while the lowest coefficient variation related to the leaf length. In addition, the highest coefficient variation related to chlorophyll b and phenol and the lowest related to chlorophyll a. Also, the results of mean comparison of morphological traits under farm and greenhouse conditions showed that there was a significant difference between different species of Rumex and different populations within each species in the farm, however, there was a significant difference between different species in the greenhouse only in leaf length, leaf width, number of leaves per plant, aerial fresh and dry weight, phenol and antioxidants. In general, phenol and antioxidants were higher in R. crispus than in other species, however, R. tuberosus showed lower values in all morphological and phytochemical traits compared to other species.
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Kamal Salehi; Gholam-Reza Sharifi-Sirchi
Abstract
Tomato yellow leaf viral disease (TYLCV) is one of the most damaging agents that causes very high yield losses worldwide and has spread to most parts of Iran. Numerous strategies have been developed to combat this disease, but these methods have been practically ineffective. In order to investigate the ...
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Tomato yellow leaf viral disease (TYLCV) is one of the most damaging agents that causes very high yield losses worldwide and has spread to most parts of Iran. Numerous strategies have been developed to combat this disease, but these methods have been practically ineffective. In order to investigate the role of transmission and combination of TY-2 and TY-1/3 gene loci in a number of sensitive and desirable line, the present study was performed.Results showed that the lines containing the two TY-2 and TY-1/3 gene loci experienced less damage regarding chlorophyll content and total protein content. In the study of proline content and PAL gene expression, it was observed that lines containing two gene loci showed lower levels of proline and gene expression. Also, in order to detect viral infection by polymerase chain reaction (PCR) using specific primers, it indicated that the virus genome does not replicate in the lines containing both gene loci. In general, the results of this study indicate the high role of the presence and pyramiding of two gene sites TY-2 and TY-1/3 in order to create resistance in tomato against TYLCV and lead to a reduction in damage against this virus.
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Arezoo Jalali; Ebrahim Ganji Moghadam; Ali Marjani
Abstract
In Iran, Sweet cherry is one of the most important horticultural products in temperate regions. So it is necessary to use micropropagation methods to accelerate its reproduction. This study was conducted as factorial experiment based on completely randomized design with two cultivars (Adli and Takdaned), ...
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In Iran, Sweet cherry is one of the most important horticultural products in temperate regions. So it is necessary to use micropropagation methods to accelerate its reproduction. This study was conducted as factorial experiment based on completely randomized design with two cultivars (Adli and Takdaned), and browning reduction treatments in four levels (dark, cold, dark and cold, antioxidant (100 mg/l ascorbic acid and 150 mg/l citric acid)) and proliferation growth regulators BAP at concentrations of (0, 1 and 2 mg/l) and IBA (0 and 0.01mg/l) and rooting stage treatments consisted of NAA (0 and 1 mg/l) and IBA (0 and 2 mg/l).The results showed that there was significant difference between treatments. The highest and lowest levels of browning were in cold treatment and antioxidan treatment, respectively. The highest number of shoots for Takdaneh (5.6) and for Adli (5) cultivars were 5.6 and 5, respectively. The highest rooting percentage was obtained for Takdaneh (78.73%) and Adli (69. 4%). In general, for Adli and Takdaneh cultivars in vitro propagation, MS culture medium containing 2 mg/L BAP and 0.01 mg/L IBA in the proliferation stage and 2 mg/L IBA in the rooting stage is recommended.
