Distant and intraspecific hybridization, induced mutagenesis in soft bread wheat

Shulembaeva, K. K.; Chunetova, Zh. Zh.; Zhussupova, A. I.

doi:10.26577/2218-7979-2016-9-1-19-23

Cited by 3 publications

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“…Кейбір белгілер арасында кері корреляция жүреді. Мысалы, өнімділігі жоғарылаған сайын сапасы, өсімдік сабағының қысқалығы мен өнімділігі немесе өсімдіктің ауруға төзімділігі мен сапасының жоғарылауы әсер етеді [4][5][6][7]. Жұмсақ бидайдың дамуы, жекелей алғанда тез жетілуі белгілі бір экологиялық жағдайларға байланысты.…”

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Genetic Analysis of the Types of Development of Mutant Lines From Common Wheat Varieties

Sarybay¹,

Chunetova²,

Iskakova³

et al. 2020

OF THE NATIONAL ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHS

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Among cereals, a special place is occupied by wheat as the main food of humanity and in improving the country's economy. The main task of breeding is to produce valuable wheat varieties that are stable to the unfavorable external environment of various natural climatic zones of Kazakhstan, consisting of a combination of valuable features. The prospects for the use of mutants in the process of hybridization are reflected in the achievements of world and domestic selection. The effect of various solutions of chemical compounds on the plant was observed from the first days during the growth of wheat sprouts. The growth of the first sprout of seeds treated with a certain solution of cadmium chloride and zinc chloride - 0.01%, the activity of cell division and structural disorders of chromosomes were manifested by variability in the varieties Kazakhstani3, Shagala, Zhenis and Lutescens 32. When treating dry wheat grain with a concentration of 0.1% cadmium chloride, it brought the growth of the Sprout to a lethal state, 0.01% inhibited the growth of the Sprout for 4 days, and in a 0.001% solution, the growth rate of the control grains was the same. On the contrary, a 0.1% vertical solution of zinc chloride inhibited the growth of the Sprout for 1 Week, 0.01% for three days. Among the studied concentrations, a 0.01% solution of cadmium chloride inhibited the growth of sprouts, causing chromosomal aberrations and morphological variability in cell division. Therefore, a concentration of 0.01% of cadmium salt was obtained as an optimal concentration to expand the limits of variability in wheat. In this regard, in our study, it was found that a 0.01% solution of cadmium chloride is an effective concentration that expands the limits of variability in wheat. The effect of this amount of solution leads to morphological changes in the plant (Binding of the stem, elongation of the earlobe, increase in the number and weight of grains in the headlobe, increase in the weight of 1000 grains, etc.), and changes in the characteristics of the M1 - M4 offspring are constantly inherited. Mutant lines L1, L2 and L3 differ in valuable breeding characteristics under the influence of a 0.01 percent solution of cadmium salt were obtained for the Kazakhstanskaya 3 and Shagala varieties. A genetic analysis of the type of development of these altered lines was carried out, as a result of which a long (16 cm) dense ear (0.80) changed from the Gull variety to a prismatic plant of the control variety (0.50), as a result of hybridization, its summer type (from the vrn gene) to the autumn type (Vrn gene). As a result of the study, Kazakhstanskaya 3, Kazakhstanskaya mutant 3 varieties contain the genes Vrn 1, Vrn 3. Well, it was found that Shagala varieties consist of the genes Vrnl, Vrn2. Varieties containing the genes Vrn1, Vrn3 show rapid maturation. However, they differed from each other in the period of intoxication.

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Genetic Analysis of the Types of Development of Mutant Lines From Common Wheat Varieties

Sarybay¹,

Chunetova²,

Iskakova³

et al. 2020

OF THE NATIONAL ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHS

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Utilizing Induced Mutagenesis in Kazakhstani Wheat Breeding

Chunetova

Iskakova

Argynbaev

et al. 2022

jour

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Mutagenic effect of physical factors and chemical substances (aziridine or ethylene imine, nitrosoethylurea, nitrosoethyleneurea) leads to increase of the spectrum of hereditary variability for breeding purposes, which however is not studied in full extent. Ecological study of anthropogenic factors action leading to disruption of certain links between chemical elements and their combinations, raise of heavy metals concentration in soil, facilitate examination of mutagenic and toxic properties of heavy metals. Increase in wheat yields by improving its genotype is one of the most urgent problems of agriculture and economy. At present, using traditional methods of selection and genetic studies, such as backcross selection, distant hybridization, and experimental mutagenesis, increased efficiency of obtaining genetically modified and improved forms of wheat [1-5]. Heavy metals are defined as metals having a density higher than 5 g/cm3. Of the total 90 naturally occurring elements divided into three classes by the degree of their threat, 53 are considered heavy metals and few are of biological importance. Accumulation of heavy metals such as cadmium (Cd) in the environment is now becoming a major cause of environmental pollution. Toxic metals can inactivate proteins, shifting metal cofactors, blocking active centers or causing allosteric changes. Besides, large number of those possesses ability of inducing mutagenic changes, tumors and causing macroscopic changes. Molecular mechanism of heavy metals toxicity is not completely understood. Cd is non-essential element that negatively affects plant growth and development, released into the environment by power stations, heating systems, metal working industries or urban traffic, which has high cumulative effect with almost no biodegradation. In plants it affects such processes as stomata opening, transpiration and photosynthesis, consequently chlorosis, leaf rolls and stunting are the main symptoms of Cd toxicity in plants accompanied by root browning, leaf red-brownish discoloration. It can also reduce the absorption of nitrate from root to shoot by inhibiting the nitrate reductase activity in shoots. The negative effect of Cd on plant growth was accompanied by an increase in dry to fresh mass ratio in all organs. Several researches have suggested that an oxidative stress could be involved in cadmium toxicity, by either inducing oxygen free radical production, or by decreasing enzymatic and non-enzymatic antioxidants [6-9]. On the other hand, the use of induced mutagenesis showed high efficiency in the production of forms with high yield, quality bakery, lodging resistance, modified plant height and resistance. And, this paper is an attempt of summarizing results performed by our group in this direction.

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The Genetic Nature of Mutational Changes Arising in the Form-Formation Process of Wheat

Chunetova,

Zhunusbaeva,

Saduakasova

et al. 2022

jour

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Increasing the yield of wheat by improving its genotype is one of the most pressing problems of agriculture and the economy. Currently, the usage of traditional breeding methods and the results of genetic investigations, such as conduction of saturating crosses, remote hybridization and experimental mutagenesis, increases the efficiency of producing genetically modified and enriched forms of wheat. In field and under controlled laboratory conditions, the effect of a surfactant on the heritable characteristics of 10 varieties of spring soft wheat was studied. After processing of wheat seeds with an aqueous surfactant solution (0.1%), we could observe the inherited changes, which are manifested in the appearance in M1, M2, F2 and BC1 of tall, potent plants with productive bushiness and various morphological characteristics that differ from the original varieties. The effect of surfactants is manifested on the morphological features of plants: bushiness, crankiness of the stem, anthocyanin stain color. During the process of meiosis, the spindle of the division of the metaphase plate, the coalescence of chr omosomes in MI, and the presence of empty (sterile) cells in AI and AII meiosis were observed. The signs of altered forms are stably transmitted in the M2 generation.

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Distant and intraspecific hybridization, induced mutagenesis in soft bread wheat

Cited by 3 publications

References 1 publication

Genetic Analysis of the Types of Development of Mutant Lines From Common Wheat Varieties

Genetic Analysis of the Types of Development of Mutant Lines From Common Wheat Varieties

Utilizing Induced Mutagenesis in Kazakhstani Wheat Breeding

The Genetic Nature of Mutational Changes Arising in the Form-Formation Process of Wheat

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