Cotton fiber is an important raw material in the global textile industry, losing up to 20-30% of ... more Cotton fiber is an important raw material in the global textile industry, losing up to 20-30% of the total yield per year due to various abiotic, biotic diseases, pests, and wilting diseases. In this analytical article, using modern methods of molecular biology, conducted by scientists around the world for 10-15 years, research on the creation of varieties resistant to verticillium wilt is widely covered. The achievements of cotton growing in Uzbekistan using modern methods of molecular biology were also noted
Marker-assisted selection (MAS) helps to shorten breeding time as well as reduce breeding resourc... more Marker-assisted selection (MAS) helps to shorten breeding time as well as reduce breeding resources and efforts. In our MAS program, we have targeted one of previously reported LD-blocks with its simple sequence repeat (SSR) marker(s), putatively associated with, at least, four different fibre quality QTLs such as fibre length, strength, micronaire and uniformity. In order to transfer targeted QTLs from a donor genotype to a cultivar of choice, we selected G. hirsutum donor genotypes L-141 and LN-1, possessing a fibre quality trait-associated LD-block from the chromosome 7/16. We crossed the donor lines with local elite G. hirsutum cultivars ‘Andijan-35’ and ‘Mekhnat’ as recipients. As a result, two segregating populations on LD-block of interest containing fibre QTLs were developed through backcrossing (BC) of F1 hybrids with their relative recipients (used as recurrent parents) up to five generations. In each BC and segregating BC1-5F1 populations, a transfer of targeted LD-block/...
Cotton genetic resources contain diverse economically important traits that can be used widely in... more Cotton genetic resources contain diverse economically important traits that can be used widely in breeding approaches to create of high-yielding elite cultivars with superior fiber quality and adapted to biotic and abiotic stresses. Nevertheless, the creation of new cultivars using conventional breeding methods is limited by the cost and proved to be time consuming process, also requires a space to make field observations and measurements. Decoding genomes of cotton species greatly facilitated generating large-scale high-throughput DNA markers and identification of QTLs that allows confirmation of candidate genes, and use them in marker-assisted selection (MAS)-based breeding programs. With the advances of quantitative trait loci (QTL) mapping and genome-wide-association study approaches, DNA markers associated with valuable traits significantly accelerate breeding processes by replacing the selection with a phenotype to the selection at the DNA or gene level. In this review, we dis...
The accumulation of oil mist in the thrust bearings compromises the safety of the unit and prompt... more The accumulation of oil mist in the thrust bearings compromises the safety of the unit and prompts financial and environmental losses. To discuss the strategies for limiting its impact, the model uses the VOF approach to calculate the air-oil-oil mist three-phase flow, combined with the Lee model, to solve the evaporation and mass transfer process between the oil and oil mist. Our attention is drawn into the influence of unit speed and pad temperature, on the occurrence of external and internal leaks from the oil tank. A comparison of cases is made with five unit speeds (100 to 500 rpm) at constant temperature (60°C), and with one unit speed (500 rpm) at different temperatures (56°C,60°C,62°C). With constant speed, the rise of pad temperature promotes the evaporation of the lubricating oil in an uneven manner, augmenting the occurrence of oil leaks. From findings, the increase of speed reduces the pressure change rate at the wall of the inner tank (external oil leaks) by 5.95 %, and...
... Dr Fiona Kate Barlow lectures in statistics and social psychology in the School ofPsychology ... more ... Dr Fiona Kate Barlow lectures in statistics and social psychology in the School ofPsychology at the University of Queensland. Her research broadly focuses on intergroup relations. Most recently she has undertaken work looking ...
The founders of NAM population have been genotyped using set of DNA primer pairs. As a result, th... more The founders of NAM population have been genotyped using set of DNA primer pairs. As a result, the number of alleles in the loci and genetic diversity among cultivars has been identified. Genetic polymorphism among investigating objects were described through results of cluster analysis. НамДУ илмий ахборотномаси Научный вестник НамГУ 2019 йил 5-сон 116
Cotton fiber is an important raw material in the global textile industry, losing up to 20-30% of ... more Cotton fiber is an important raw material in the global textile industry, losing up to 20-30% of the total yield per year due to various abiotic, biotic diseases, pests, and wilting diseases. In this analytical article, using modern methods of molecular biology, conducted by scientists around the world for 10-15 years, research on the creation of varieties resistant to verticillium wilt is widely covered. The achievements of cotton growing in Uzbekistan using modern methods of molecular biology were also noted
Marker-assisted selection (MAS) helps to shorten breeding time as well as reduce breeding resourc... more Marker-assisted selection (MAS) helps to shorten breeding time as well as reduce breeding resources and efforts. In our MAS program, we have targeted one of previously reported LD-blocks with its simple sequence repeat (SSR) marker(s), putatively associated with, at least, four different fibre quality QTLs such as fibre length, strength, micronaire and uniformity. In order to transfer targeted QTLs from a donor genotype to a cultivar of choice, we selected G. hirsutum donor genotypes L-141 and LN-1, possessing a fibre quality trait-associated LD-block from the chromosome 7/16. We crossed the donor lines with local elite G. hirsutum cultivars ‘Andijan-35’ and ‘Mekhnat’ as recipients. As a result, two segregating populations on LD-block of interest containing fibre QTLs were developed through backcrossing (BC) of F1 hybrids with their relative recipients (used as recurrent parents) up to five generations. In each BC and segregating BC1-5F1 populations, a transfer of targeted LD-block/...
Cotton genetic resources contain diverse economically important traits that can be used widely in... more Cotton genetic resources contain diverse economically important traits that can be used widely in breeding approaches to create of high-yielding elite cultivars with superior fiber quality and adapted to biotic and abiotic stresses. Nevertheless, the creation of new cultivars using conventional breeding methods is limited by the cost and proved to be time consuming process, also requires a space to make field observations and measurements. Decoding genomes of cotton species greatly facilitated generating large-scale high-throughput DNA markers and identification of QTLs that allows confirmation of candidate genes, and use them in marker-assisted selection (MAS)-based breeding programs. With the advances of quantitative trait loci (QTL) mapping and genome-wide-association study approaches, DNA markers associated with valuable traits significantly accelerate breeding processes by replacing the selection with a phenotype to the selection at the DNA or gene level. In this review, we dis...
The accumulation of oil mist in the thrust bearings compromises the safety of the unit and prompt... more The accumulation of oil mist in the thrust bearings compromises the safety of the unit and prompts financial and environmental losses. To discuss the strategies for limiting its impact, the model uses the VOF approach to calculate the air-oil-oil mist three-phase flow, combined with the Lee model, to solve the evaporation and mass transfer process between the oil and oil mist. Our attention is drawn into the influence of unit speed and pad temperature, on the occurrence of external and internal leaks from the oil tank. A comparison of cases is made with five unit speeds (100 to 500 rpm) at constant temperature (60°C), and with one unit speed (500 rpm) at different temperatures (56°C,60°C,62°C). With constant speed, the rise of pad temperature promotes the evaporation of the lubricating oil in an uneven manner, augmenting the occurrence of oil leaks. From findings, the increase of speed reduces the pressure change rate at the wall of the inner tank (external oil leaks) by 5.95 %, and...
... Dr Fiona Kate Barlow lectures in statistics and social psychology in the School ofPsychology ... more ... Dr Fiona Kate Barlow lectures in statistics and social psychology in the School ofPsychology at the University of Queensland. Her research broadly focuses on intergroup relations. Most recently she has undertaken work looking ...
The founders of NAM population have been genotyped using set of DNA primer pairs. As a result, th... more The founders of NAM population have been genotyped using set of DNA primer pairs. As a result, the number of alleles in the loci and genetic diversity among cultivars has been identified. Genetic polymorphism among investigating objects were described through results of cluster analysis. НамДУ илмий ахборотномаси Научный вестник НамГУ 2019 йил 5-сон 116
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