Online ISSN: 2515-8260

Keywords : variety


Saidakbar Raxmonkulov; Jalolov Khurshidbek; Chariyeva Hilal Dustmurotovna; Danabaev Abdumurot Berdievich; Ochildiev Najmiddin Norboevich; Abdishukurov Buri Radjapovish; Dadakhujayev Hassanboy Tulanboyevich

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 9, Pages 1948-1951

The article presents the results on the correlation of some economically valuable traits in interline hybrids of F2 cotton with various colors of seed puffs. Revealed positive average correlations between the productivity of plants and the weight of raw cotton one boll; strong negative to strong positive - between 1000 seeds and fiber yield; weak, medium and strong - between 1000 seeds and fiber length.


Diyor Turdikulovich Juraev; Oybek Anvarovich Amanov; Sherzod Dilmurodovich Dilmurodov; Nurzod Bekmurodovich Boysunov; Jabarov Farrukh Odirovich

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 2, Pages 2254-2270

Abstract: Wheat (Triticum aestivum L.) is considered one of the world's most important
cereal crops. Every year 704 million tons of grain is produced worldwide. Bread wheat
croplands cover 17% of the total crop area. In recent years, sudden changes in air
temperatures have a negative impact on the morphological, physiological, biochemical and
molecular properties of wheat and grain yield. Therefore, it is important to create highyielding
and resistant varieties of bread wheat to abiotic factors and to develop its primary
source in the condition of different regions. In the result of this study, the influence of
high temperature which varied from 30°С and above continuously during spiking and
maturation period of grain, especially in the period of grain filling, on grain quality and
productivity has been studied thoroughly for southern parts of Uzbekistan. Mostly, winter
bread wheat varieties are grown in these southern regions. The optimal sowing time in
autumn season is the second decade of October. In order to determine the heat resistance
of the winter wheat varieties that are mostly grown in the Republic and selected in the
result of breeding, the experiments and observations were carried out on optimal and late
sowing periods. The optimal planting time was found to be appropriate on the 15th of
October and for late sowing the 15th of November. At the same time, late sown varieties and
samples are divided into resistant and non-resistant groups due to the delay in the
maturation period and greater exposure to heat. At the study, temperatures during the
growth period were calculated and daily temperatures during the grain filling period were
determined too, and the influence of air temperature on growth phases, height of plant
(cm), spike length (cm), number of spikelets in a spike (pieces), grain weight in a spike(g),
weight of 1000 grains (g), grain nature (g/l), protein amount (%), gluten amount (%), its
changes and the results in optimal and late periods were studied by comparing them.

Evaluation of Grain Quality Indicators In Old Varieties of Spring Soft Wheat


European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 3, Pages 1577-1586

In the conditions of the steppe zone of the Samarkand region, 5 local ancient varieties of spring soft wheat of various geographical origin were studied. The aim of the research is to evaluate the grain quality indicators of ancient wheat varieties in various meteorological conditions and to identify sources of protein and gluten content for use in practical breeding.
The negative effect of abundant moisture (26%) during the filling period and high air temperature (26%) in the phase of grain ripeness on the quantity and quality of gluten was found. It is shown that the studied ancient varieties in typical meteorological conditions of the steppe zone of the Samarkand region stably form first-class grain: the maximum protein content in the grain is 13.1-14.5%, raw gluten-33.2-35.4%, the number of drops-319-340 s, nature-758-779 g/l. At the same time, the potential of rheological properties of the dough in varieties exceeds the norms for strong wheat: dough liquefaction-39 u. f., valor metric assessment-60-72 u. V. calorimeters.
The volume of bread-678-773 ml with a total score of 3.0-4.8 points. Studies have shown that the meteorological conditions of the year cause a high phenotypic variability of the rheological properties of the dough (CV=51.4-64.3 %), the average variability of signs: the number of falls (CV=12.2-14.0%), the mass fraction of protein (CV=9.1-12.2 %, the overall score of bread (CV=8.1-11.3 %). On the basis of the conducted research, the source varieties for indicators of technological properties of grain for use in practical breeding programs are identified.


Khodjiyev Muksin; Abbazov Ilkhom; Makhkamov Iqbol; Karimov Javlon; Rajapova Marguba

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 2, Pages 508-515

This article describes the changes in fiber waste from the technological flow in ginning plants, how much it changes in the stages of the technological process. The dust released in the drying and cleaning shop is only 5-7 mg/m3 of dust, which is less than the air in the building where the drying equipment is located. Large dispersed dust particles separate even at high humidity and sink to the surface of the building without being able to spread. In drying units, dust emitted in conjunction with an atmospheric drying agent causes discomfort. Although this dust is coarsely dispersed, it escapes in the dryer along with the air stream and settles near the roof of the building and near the drying shop. The amount of dust emitted was found to be 500-600 kg per day. In the ginning unit, the released dust is released into the atmosphere from the cotton pneumatic transport system, which is formed in the air in the drying and cleaning shop, as well as in the cleaning of cotton in the cleaning machines. It is a dusty fiber with less mineral fractions. The fine fractions are mainly composed of crushed dirty particles. It was found that only one ginnery produces 150-350 tons of fibrous waste per year, depending on the type of cotton, 5-6 tons of non-recyclable waste, 70-90% of non-recyclable waste is organic waste. It serves as a raw material for the use of waste as feed for livestock in agriculture. The results of scientific research conducted at the enterprise “Zarbdor Pakhta Tozalash” JSC in Jizzakh region to determine the amount of waste from ginneries have been processed.

Initial Material For Creating Varieties Of Soft Spring Wheat (Triticum Aestivum L.) In The Conditions Of The Northern Forest Steppe Of Western Siberia

Pakul Vera nikonorovna; MARTYNOVA SVETLANA VIKTOROVNA; V.N. Pakul

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 2, Pages 4470-4483

In the presented studies, 60 samples of the collection material of spring soft wheat from the VIR collection and from the Bioresource collection of agricultural plants of the Kemerovo Research Institute of Agriculture, branch of the SFSCA RAS) were assessed. The selection val-uable quantitative traits in the samples of spring-soft wheat were studied and the most adapted initial material of the conditions for the forest-steppe conditions of the forest-steppe registration of Siberia (Kuznetsk depression, Kemerovo region, Kemerovo district) in the conditions of 2015-2018 years was identified. According to plant height, 17 samples of spring soft wheat with lodging resistance of 9 points (on a nine-point scale) were identified, including five with low variability of the trait: Altai 70 (KP-076, RF Barnaul) – 2,86%, Siberian Alliance (k-65242, Bar-naul, Kemerovo) – 5,75%, AC Nonda (k-64562, Canada) – 7,70%, OmGAU 90 (k-65447, RF Omsk) – 8,33% , Valkeria (k-64552, RF Krasnoyarsk) – 8,86%. The height of plants largely de-termines the yield, r = 0,6011 and the elements of its productivity: the mass of 1000 grains r = 0,6580, the number of grains per ear, r = 0,6092, the mass of grain per ear, r = 0,5722 (R = 0,4821 Based on a set of features, the source material was selected for creating varieties of spring soft wheat with high adaptive properties (1000 grain weight, number of grains per ear, grain weight per ear): Biora (k-64358, Russian Federation Moscow), Ulgenya (KP-078), Karabalykskaya 89 (k-64702, Kazakhstan). Sources with high productivity were identified:


DSc. Kurbonov A.Y .; prof.Avtonomov V.A .; prof. Axunov A.A .; DSc.HashimovaN .

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 2, Pages 1044-1051

In the world's cotton-growing countries, cotton is cultivated on the territory of 89 countries, on a total area of more than 30 million hectares, from which more than 22.4 million tons of cotton fiber are obtained. Today, there are problems in the production of high-quality cotton fiber yield. One of these problems is pathogens that cause significant damage to cotton production, with losses in the world amounting to 12-15%. In the world, considerable attention is paid to the study and control of the pathogen Verticillium dahliae Klebahn, which affects cotton.
The problem of breeding wilt-resistant varieties of cotton is complicated by the search for new methods and donors of resistance to the pathogen. It is necessary to improve the method of selection of parent pairs during hybridization and qualitative assessment of interspecific hybrids at the early stages of the breeding process in order to increase the efficiency of breeding, speed up the process of introducing new varieties of cotton into production.The selection must be carried out on the basis of physiology and biochemistry of signs of resistance of the initial breeding material. The initial stage of selection should be based on test signs of resistance, which are associated with the catalytic activity of some enzymes involved in the formation of phytoimmunity against fungal infections (peroxidase, phenylalanine ammonialyase, polyphenol oxidase).The greatest interest of researchers is attracted by protective mechanisms, including the processes of lignification of cell walls and the biosynthesis of phenolic phytoalexins. These mechanisms simultaneously create a mechanical and chemical barrier to the penetration of fungal structures into the cell, preventing the spread of the pathogen.