Masoud Torabi | Seed and Plant Improvement Research Institute (original) (raw)
Papers by Masoud Torabi
Iranian Journal of Crop Sciences, Nov 10, 2020
It is simple-mindedness if you think that soilless culture included modern practical knowledge in... more It is simple-mindedness if you think that soilless culture included modern practical knowledge in the world, so that the evidence indicate that from many centuries ago, scientists tried to grow plant in containers aboveground. Whatever it is considerable, the hydroponics system took place in various places and ages in historical context. The
Journal of Food Agriculture & Environment, 2010
To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage with emphasis on r... more To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage with emphasis on response of seedling roots and free proline accumulation, a greenhouse hydroponics trial was carried out in University Putra Malaysia. The ecotypes were representative of all climatic regions of Iran. The seeds were planted in perforated bottom trays filled with sand and immersed in nutrient solution (media culture). After 8 days when seedlings had reached the first trifoliate leaf stage the EC of nutrient solution was increased by adding sodium chloride gradually so that at 25 days of trial EC reached to 15 dS m -1 . The seedlings were harvested after 29 days and observations were taken on root and shoot characteristics and free proline accumulation. The results showed different response of ecotypes in terms of root and shoot biomass and their development and also induced proline accumulation. The response of ecotypes in root parameters was variable but shoots were more affected than roo...
Salinity affects plant growth and development in various ways through its impact on photosynthesi... more Salinity affects plant growth and development in various ways through its impact on photosynthesis, water relations and nutrient absorption. Additionally, the biochemical composition of plants is also affected by salinity through changes in the concentration and type of proteins, amino acids, sugars and other carbohydrates. This chapter elucidates with examples the changes that occur in the plant‟s physiological functions and biochemical composition as a result of increased salinity of the plant‟s environment. It is highlighted that the fundamental mechanism of salinity‟s effects on plant function is the increase in the osmotic pressure of the plant‟s environment that inhibits the absorption of water and nutrients. Invariably, salinity inhibits photosynthesis through its effects on stomatal conductance, water and nutrient uptake and decrease in the chlorophyll concentration. Subsequently, higher levels of salinity create an excessive accumulation of salts in plant tissues that cause...
Salinity is one of the world‟s most serious environmental problems in agriculture where one-third... more Salinity is one of the world‟s most serious environmental problems in agriculture where one-third of the world‟s cultivated land is affected by salt stress. The physiological and biochemical processes of plants can be related to the deleterious influences of salt on plants. The breeding techniques and conventional selection that is based on differences in agronomic characters could not cover all responses of plants to salt stress, because those agronomic characters represent the combined genetic and environmental effects on plant growth. To identify some salt tolerant ecotypes from its centre of origin in Iran, a study was conducted on the physiological and biochemical responses of genotypes of alfalfa to salt stress at three stages of plant development namely, germination, seedling growth, and mature plant growth. At the germination stage, nineteen ecotypes of alfalfa collected in August 2007 from Iran were evaluated for their salt tolerance based on seed germination parameters in ...
In order to study the stability of yield and some phonological parameter an experiment was carrie... more In order to study the stability of yield and some phonological parameter an experiment was carried out with thirteen genotypes of rice under various environment conditions. The results have shown that there was a significant interaction between genotypes and different environments. A significant difference was observed between thirteen genotypes relative to yield production. The scattering of lines determined relative to trend of grain yield and regression coefficients so that the genotypes classified to four groups in terms of grain yield stability. Based on the stability in yield and qualitative parameter genotype 4 is superior to others genotypes so that it can be recommended for commercial cultivation in the Isfahan zone of Iran.
Salinity affects plant growth and development in various ways through its impact on photosynthesi... more Salinity affects plant growth and development in various ways through its impact on photosynthesis, water relations and nutrient absorption. Additionally, the biochemical composition of plants is also affected by salinity through changes in the concentration and type of proteins, amino acids, sugars and other carbohydrates. This paper elucidates with examples the changes that occur in the plant‟s physiological functions and biochemical composition as a result of increased salinity of the plant‟s environment. It is highlighted that the fundamental mechanism of salinity‟s effects on plant function is the increase in the osmotic pressure of the plant‟s environment that inhibits the absorption of water and nutrients. Invariably, salinity inhibits photosynthesis through its effects on stomatal conductance, water and nutrient uptake and decrease in the chlorophyll concentration. Subsequently, higher levels of salinity create an excessive accumulation of salts in plant tissues that causes ...
SN Applied Sciences
Drought stress is the most important limiting factor in crop plants including maize (Zea mays L.)... more Drought stress is the most important limiting factor in crop plants including maize (Zea mays L.), which is the third important world crop after wheat and rice. To examine the quantity and quality of forage as well as energy and water productivity of two maize varieties to drought stress, a field experiment was carried out as a split plot based on a completely randomized block design with three replications in Isfahan, Iran, during 2017 and 2018 growing seasons. The main and sub-plots were three irrigation regimes (100%, 80, and 60% full irrigation) and two maize varieties (704 and Maxima), respectively. Data analysis showed that drought stress harmed wet and dry forage yield and energy productivity, while its effect was positive on some forage quality such as ash, neutral detergent fiber (NDF), hemicellulose free cell wall (ADF), and lignin (ADL). Based on results, drought stress of 60% full irrigation resulted in reduced wet and dry forage maize yields. In addition, drought stress...
SN Applied Sciences
Sorghum is an important forage crop, and both quantity and quality of this crop are affected by d... more Sorghum is an important forage crop, and both quantity and quality of this crop are affected by drought stress. Accordingly, in order to investigate the effect of drought stress on quantity and quality of morpho-physiological traits, a split-plot experiment was conducted based on randomized complete block design with four replicates in Isfahan, Iran, during 2017 and 2018 crop seasons. Treatments were irrigation regimes with four levels (control, preventing irrigation at pollination, seed milky, and seed doughy stages) and three varieties of sorghum (Sepideh, Kimia, and Payam). The results showed that drought stress negatively influenced morphological and yield-related traits of sorghum, while its effect was positive on some quality-related traits such as total soluble carbohydrate, crude protein, and proline contents. According to the results, drought stress based on prevention of irrigation at doughy stage (representing moderate drought stress) caused inconsiderable reduction in so...
International Journal of Food Agriculture and Environment, 2010
Résumé/Abstract To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage wi... more Résumé/Abstract To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage with emphasis on response of seedling roots and free proline accumulation, a greenhouse hydroponics trial was carried out in University Putra Malaysia. The ecotypes ...
![Research paper thumbnail of [PDF]Variation of root and shoot growth and free proline accumulation in Iranian alfalfa ecotypes under salt stress](https://attachments.academia-assets.com/72853183/thumbnails/1.jpg)
](To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage with emphasis on r... more To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage with emphasis on response of seedling roots and free proline accumulation, a greenhouse hydroponics trial was carried out in University Putra Malaysia. The ecotypes were representative of all climatic regions of Iran. The seeds were planted in perforated bottom trays filled with sand and immersed in nutrient solution (media culture). After 8 days when seedlings had reached the first trifoliate leaf stage the EC of nutrient solution was increased by adding sodium chloride gradually so that at 25 days of trial EC reached to 15 dS m-1. The seedlings were harvested after 29 days and observations were taken on root and shoot characteristics and free proline accumulation. The results showed different response of ecotypes in terms of root and shoot biomass and their development and also induced proline accumulation. The response of ecotypes in root parameters was variable but shoots were more affected than roots...
Definitely the physiological processes of plants are related to the deleterious influences of cli... more Definitely the physiological processes of plants are related to the deleterious influences of climate change impacts on plants. To identify some salt tolerant ecotypes from its centre of origin in Iran, a study was conducted on the physiological responses of genotypes of alfalfa to salt stress at mature plant. Five Iranian alfalfa ecotypes that they were representative of 3 climates zone were evaluated to salt stress in a split plot trial with 3 replications where the main plots were five ecotypes and subplots were the levels of salinity. Because of lack of space and facilities only one un-replicated row comprising all ecotypes was used as untreated for comparison with treated plants. The seeds were planted in plastic pots filled with sand and immersed in nutrient solution. After more than 2 months when the plant became mature the EC of nutrient solution was increased gradually by adding sodium chloride. At every 15 days the EC increased by 3 dS/m, and the final EC was 18 dS/m. The ...
Iranian Journal of Crop Sciences, Nov 10, 2020
It is simple-mindedness if you think that soilless culture included modern practical knowledge in... more It is simple-mindedness if you think that soilless culture included modern practical knowledge in the world, so that the evidence indicate that from many centuries ago, scientists tried to grow plant in containers aboveground. Whatever it is considerable, the hydroponics system took place in various places and ages in historical context. The
Journal of Food Agriculture & Environment, 2010
To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage with emphasis on r... more To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage with emphasis on response of seedling roots and free proline accumulation, a greenhouse hydroponics trial was carried out in University Putra Malaysia. The ecotypes were representative of all climatic regions of Iran. The seeds were planted in perforated bottom trays filled with sand and immersed in nutrient solution (media culture). After 8 days when seedlings had reached the first trifoliate leaf stage the EC of nutrient solution was increased by adding sodium chloride gradually so that at 25 days of trial EC reached to 15 dS m -1 . The seedlings were harvested after 29 days and observations were taken on root and shoot characteristics and free proline accumulation. The results showed different response of ecotypes in terms of root and shoot biomass and their development and also induced proline accumulation. The response of ecotypes in root parameters was variable but shoots were more affected than roo...
Salinity affects plant growth and development in various ways through its impact on photosynthesi... more Salinity affects plant growth and development in various ways through its impact on photosynthesis, water relations and nutrient absorption. Additionally, the biochemical composition of plants is also affected by salinity through changes in the concentration and type of proteins, amino acids, sugars and other carbohydrates. This chapter elucidates with examples the changes that occur in the plant‟s physiological functions and biochemical composition as a result of increased salinity of the plant‟s environment. It is highlighted that the fundamental mechanism of salinity‟s effects on plant function is the increase in the osmotic pressure of the plant‟s environment that inhibits the absorption of water and nutrients. Invariably, salinity inhibits photosynthesis through its effects on stomatal conductance, water and nutrient uptake and decrease in the chlorophyll concentration. Subsequently, higher levels of salinity create an excessive accumulation of salts in plant tissues that cause...
Salinity is one of the world‟s most serious environmental problems in agriculture where one-third... more Salinity is one of the world‟s most serious environmental problems in agriculture where one-third of the world‟s cultivated land is affected by salt stress. The physiological and biochemical processes of plants can be related to the deleterious influences of salt on plants. The breeding techniques and conventional selection that is based on differences in agronomic characters could not cover all responses of plants to salt stress, because those agronomic characters represent the combined genetic and environmental effects on plant growth. To identify some salt tolerant ecotypes from its centre of origin in Iran, a study was conducted on the physiological and biochemical responses of genotypes of alfalfa to salt stress at three stages of plant development namely, germination, seedling growth, and mature plant growth. At the germination stage, nineteen ecotypes of alfalfa collected in August 2007 from Iran were evaluated for their salt tolerance based on seed germination parameters in ...
In order to study the stability of yield and some phonological parameter an experiment was carrie... more In order to study the stability of yield and some phonological parameter an experiment was carried out with thirteen genotypes of rice under various environment conditions. The results have shown that there was a significant interaction between genotypes and different environments. A significant difference was observed between thirteen genotypes relative to yield production. The scattering of lines determined relative to trend of grain yield and regression coefficients so that the genotypes classified to four groups in terms of grain yield stability. Based on the stability in yield and qualitative parameter genotype 4 is superior to others genotypes so that it can be recommended for commercial cultivation in the Isfahan zone of Iran.
Salinity affects plant growth and development in various ways through its impact on photosynthesi... more Salinity affects plant growth and development in various ways through its impact on photosynthesis, water relations and nutrient absorption. Additionally, the biochemical composition of plants is also affected by salinity through changes in the concentration and type of proteins, amino acids, sugars and other carbohydrates. This paper elucidates with examples the changes that occur in the plant‟s physiological functions and biochemical composition as a result of increased salinity of the plant‟s environment. It is highlighted that the fundamental mechanism of salinity‟s effects on plant function is the increase in the osmotic pressure of the plant‟s environment that inhibits the absorption of water and nutrients. Invariably, salinity inhibits photosynthesis through its effects on stomatal conductance, water and nutrient uptake and decrease in the chlorophyll concentration. Subsequently, higher levels of salinity create an excessive accumulation of salts in plant tissues that causes ...
SN Applied Sciences
Drought stress is the most important limiting factor in crop plants including maize (Zea mays L.)... more Drought stress is the most important limiting factor in crop plants including maize (Zea mays L.), which is the third important world crop after wheat and rice. To examine the quantity and quality of forage as well as energy and water productivity of two maize varieties to drought stress, a field experiment was carried out as a split plot based on a completely randomized block design with three replications in Isfahan, Iran, during 2017 and 2018 growing seasons. The main and sub-plots were three irrigation regimes (100%, 80, and 60% full irrigation) and two maize varieties (704 and Maxima), respectively. Data analysis showed that drought stress harmed wet and dry forage yield and energy productivity, while its effect was positive on some forage quality such as ash, neutral detergent fiber (NDF), hemicellulose free cell wall (ADF), and lignin (ADL). Based on results, drought stress of 60% full irrigation resulted in reduced wet and dry forage maize yields. In addition, drought stress...
SN Applied Sciences
Sorghum is an important forage crop, and both quantity and quality of this crop are affected by d... more Sorghum is an important forage crop, and both quantity and quality of this crop are affected by drought stress. Accordingly, in order to investigate the effect of drought stress on quantity and quality of morpho-physiological traits, a split-plot experiment was conducted based on randomized complete block design with four replicates in Isfahan, Iran, during 2017 and 2018 crop seasons. Treatments were irrigation regimes with four levels (control, preventing irrigation at pollination, seed milky, and seed doughy stages) and three varieties of sorghum (Sepideh, Kimia, and Payam). The results showed that drought stress negatively influenced morphological and yield-related traits of sorghum, while its effect was positive on some quality-related traits such as total soluble carbohydrate, crude protein, and proline contents. According to the results, drought stress based on prevention of irrigation at doughy stage (representing moderate drought stress) caused inconsiderable reduction in so...
International Journal of Food Agriculture and Environment, 2010
Résumé/Abstract To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage wi... more Résumé/Abstract To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage with emphasis on response of seedling roots and free proline accumulation, a greenhouse hydroponics trial was carried out in University Putra Malaysia. The ecotypes ...
To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage with emphasis on r... more To investigate salt tolerance of 20 Iranian alfalfa ecotypes in seedling stage with emphasis on response of seedling roots and free proline accumulation, a greenhouse hydroponics trial was carried out in University Putra Malaysia. The ecotypes were representative of all climatic regions of Iran. The seeds were planted in perforated bottom trays filled with sand and immersed in nutrient solution (media culture). After 8 days when seedlings had reached the first trifoliate leaf stage the EC of nutrient solution was increased by adding sodium chloride gradually so that at 25 days of trial EC reached to 15 dS m-1. The seedlings were harvested after 29 days and observations were taken on root and shoot characteristics and free proline accumulation. The results showed different response of ecotypes in terms of root and shoot biomass and their development and also induced proline accumulation. The response of ecotypes in root parameters was variable but shoots were more affected than roots...
Definitely the physiological processes of plants are related to the deleterious influences of cli... more Definitely the physiological processes of plants are related to the deleterious influences of climate change impacts on plants. To identify some salt tolerant ecotypes from its centre of origin in Iran, a study was conducted on the physiological responses of genotypes of alfalfa to salt stress at mature plant. Five Iranian alfalfa ecotypes that they were representative of 3 climates zone were evaluated to salt stress in a split plot trial with 3 replications where the main plots were five ecotypes and subplots were the levels of salinity. Because of lack of space and facilities only one un-replicated row comprising all ecotypes was used as untreated for comparison with treated plants. The seeds were planted in plastic pots filled with sand and immersed in nutrient solution. After more than 2 months when the plant became mature the EC of nutrient solution was increased gradually by adding sodium chloride. At every 15 days the EC increased by 3 dS/m, and the final EC was 18 dS/m. The ...