The article summarizes the study results of adaptability parameters of winter durum wheat depending on its forecrop. The study was carried out in the Rostov region in 2015-2017. As the objects of the study there have been used 8 winter durum wheat varieties ‘Donchanka’, ‘Amazonka’, ‘Agat Donskoy’, ‘Kristella’, ‘Lazurit’, ‘Oniks’, ‘Diona’ and ‘Eyrena’. The variety ‘Donchanka’ was taken as a standard variety. In the field trials the varieties were sown after weedfree and green fallows, and after such forecrops as peas, sunflower and maize for grain. The obtained data showed that green fallow was the most favorable forecrop for winter durum wheat, an average yield of which was 7.69 t/ha. When sown after various forecrops, all varieties had different adaptability parameters. The best forecrops were weedfree fallow (‘Kristella’ with 7.78 t/ha, ‘Lazurite’ with 7.74 t/ha), green fallow (‘Agat Donskoy’ with 8.30 t/ha, ‘Lazurit’ with 8.46 t/ha) and peas (‘Oniks’ with 7.41 t/ha, ‘Diona’ with 8.11 t/ha). Among the whole set of the varieties, the variety ‘Agat Donskoy’ (bi>1) proved to be the most highly responsive, while maintaining in most cases high stable yields (si2 <1), productivity of the varieties sown after all forecrops, except sunflower, was 6.93-8.30 t/ha. With productivity increase of 1 t/ha, it improved its indicator (bi) by 1.16-5.15 t/ha. The variety ‘Eyrena’ is recommended for cultivation on an extensive background, since through the years of study it turned out to be the least responsive - with productivity increase by 1 t/ha, it improved its indicator (bi) by 0.01-0.55 t/ha after such forecrops as peas, sunflower and maize for silage.
In the regions of insufficient and unstable moisture, hydrothermal conditions are the main natural factors that determine the level of crop productivity. The purpose of our study was to identify the role of the main meteorological factors in the formation of winter durum wheat productivity at different periods of its growth and development. The study was carried out in the southern part of the Rostov region in the FSBSI “Agricultural Research Center “Donskoy” in 2003–2014. The objects of the study were winter durum wheat varieties and breeding lines of competitive variety testing, sown in black fallow, in four replications, with a plot area of 25 m². The current paper presents the analysis results of the average daily temperature, precipitation, hydrothermal index (HTI) by the periods of winter durum wheat growth and development through the years of study, average varietal productivity for each year. It has been established that the characteristic features of the studied years are a temperature rise, especially in the pre-sowing and sowing periods, during the wintering period and the resumption of spring vegetation, and irregular precipitation, their shift in the fall from November to October, in the winter from February to January, in the spring from April to March, and its decrease or absence during the active growing season. The conducted correlation analysis between main meteorological factors and productivity showed a decisive role of the temperature regime in winter durum wheat productivity formation. It turned out to be less significant in relation to precipitation. This indicates that winter durum wheat productivity does not depend on the total amount of precipitation, but on its distribution, moisture presence in soil, and temperature. According to the analysis of the main meteorological factors, their connection with productivity, there have been identified positive and negative points in the ontogenesis of winter durum wheat associated with climate change, which must be taken into account in breeding and growing technology. There have been determined the main objectives for winter durum wheat breeding, aimed at improving such adaptive properties as drought resistance, heat resistance, especially at the initial stages of growth and development, winter tolerance, disease and pest resistance occurred due to climate change (septorisis, pyrenophorosis, bacteriosis and fusarium of heads and kernels).
The high requirements imposed by modern pasta processing enterprises on the grain quality of both spring and winter Triticum durum dictate the necessity to develop new methods, approaches for estimating breeding material and selecting high-quality genotypes. Correlation analysis, which makes it possible to identify practically positive and negative factors, minimize the most unfavorable ones, accelerate, and increase the efficiency of the breeding process, is one of them.The purpose of the current work was to study the correlation between quality traits of winter durum wheat and to determine the most accessible and informative ones as selection criteria in the breeding process.The field and laboratory (determination of grain quality parameters, rheological properties of dough and pasta) study was carried out on the basis of the FSBSI “ARC “Donskoy”, from 2014 to 2020. The material for the study were the varieties and lines of Competitive Variety Testing (n = 35).There have been presented the analysis results of a correlation between quality traits of kernels, hard semolina, pasta of winter durum wheat. There have been identified the most accessible, informative and significant traits, such as protein percentage, gluten quality (GDI), alpha-amylase (FN) activity, which have a decisive effect on the strength, cooking properties of pasta, rheological properties of the dough, which can be used as selection criteria in the breeding process, including at the early stages. Thus, protein percentage has positively correlated with pasta strength (r = 0.73), dough durability and elasticity (r = 0.86 and r = 0.61), valorimetric estimation (r = 0.55); GDI and FN have correlated with pasta strength (r = 0.69 and r = 0.57), durability (r = 0.92 and r = 0.57), elasticity (r = 0.75 and r = 0.50). The correlation between cooking properties of pasta and the above-mentioned traits was negative (positive correlation): digestibility by weight and volume with protein percentage (r = –0.60 and r = –0.71), GDI (r = –0.49 and r = 0.47), FN (r = –0.48 and r = –0.56), dry matter losses, respectively, r = –0.87, r =–0.85, r = –0.78. The content of carotenoids and the color of pasta are characterized with a mean positive correlation (r = 0.46). There has been found that informatively significant quality traits (protein, GDI, FN, carotenoids) are positively correlated with each other from moderate (protein with carotenoids r = 0.36) to strong (protein with FN r = 0.94) links, but negatively with such important parameters for winter durum wheat as 1000-kernel weight and grain unit. Therefore, when selecting breeding forms and lines with increased values of the main traits, it is necessary to control 1000-kernel weight and grain unit, or at least one of them.
The success of any agricultural crop breeding, including winter durum wheat primarily depends on the initial material at the breeder’s disposal, its value, and the degree of study. The purpose of the current study was to evaluate collection samples of winter durum wheat according to quality indicators and to select the best ones for use in breeding programs. In the Rostov region there were studied 159 winter durum wheat samples of different ecological and geographical origin according to grain quality (protein percentage, gluten content, amount of carotenoid pigments, kernel hardness, nature weight). The winter durum wheat samples had a high protein percentage and belonged to the 1-st quality class. According to gluten content in grain there were identified 17 (10.7%) samples. The following samples had the maximum values of trait ‘SDS-sedimentation’: ‘588/15’ (Russia) with 50 ml; ‘SAHINBEY’ (Turkey), ‘SARI BUGDAY 2’ (Turkey), ‘543/15’ (Russia) with 49 ml; ‘ANKARA 98’ (Turkey) with 48 ml. The following 43 winter durum wheat samples (more than 85%) had large kernel hardness in the trial: ‘663/17’, ‘1121/12’, ‘Novinka 4’, ‘Alena’ (Russia), ‘C1252’ (Turkey), ‘SN TURK MI 82-83 90 / GUTROS-2’, ‘DF 28.82.84 / DAB-18’, ‘P 1290493 // HUI // AV79’ (Mexico), ‘K-61869’ (Moldova). Over the years of study, a large amount of carotenoid pigments was identified in the following samples: ‘Novinka 4’ with 705 μg /%, ‘535/17’ with 689 μg /%, ‘543/15’ with 664 μg /% (Russia), ‘OSU-3880001 / 4AOS / SNIP / 3 / MEDIUM / KIF // SAPI’ with 704 μg /% (Mexico), ‘Winter Gold’ with 697 μg /% (Germany). According to the complex of qualitative indicators, there were identified 5 winter durum wheat samples, which are recommended to be included in the breeding programs of the Rostov region.
Одним из основных направлений в селекции озимой твердой пшеницы является выведение устойчивых сортов к распространенным в Ростовской области болезням. Огромное значение для решения этой задачи имеет создание собственного исходного материала, изучение его в условиях искусственных инфекционных фонов, отбор устойчивых и выносливых образцов для дальнейшего вовлечения их в селекционный процесс. Цель исследований-изучение сортов и линий озимой твердой пшеницы конкурсных испытаний на устойчивость к листовым болезням при искусственном заражении на специально созданных инфекционных фонах. Представлены результаты иммунологической оценки 114 сортов и линий озимой твердой пшеницы к возбудителям бурой, желтой, стеблевой ржавчины, мучнистой росы, септориоза (инфекционный полевой фон), пиренофороза (естественный фон). Установлено, что большая часть сортов и селекционных линий по степени поражения относилась к устойчивым или слабовосприимчивым: к бурой ржавчине-74,3%, желтой-84,3%, мучнистой росе-77,1%. К септориозу, стеблевой ржавчине и пиренофорозу озимая твердая пшеница оказалась более восприимчивой: высокой устойчивостью и слабой восприимчивостью характеризовалось всего лишь 15,8, 38,7, 28,1% образцов соответственно. Выделены сорта и линии. устойчивые к каждому патогену в отдельности и с групповой устойчивостью к трем-четырем видам (Амазонка, Агат донской, Оникс, Лазурит, Тейя, Эйрена, Яхонт, Юбилярка, 840/11, 993/12 и др.). Дана их характеристика по урожайности и другим хозяйственно-ценным признакам и свойствам. Все они рекомендованы в качестве источников устойчивости для использования в селекционных программах.
There have been generalized the study results of the parameters of ecological adaptability of winter durum wheat and there have been identified the most adaptive varieties of different ecology under unstable climatic conditions of the Rostov region. There was conducted the analysis of 34 varieties of domestic and foreign breeding, which have been recommended for cultivation in different climatic zones. During the current study there have been identified the groups of winter durum wheat varieties that were different in their ecological adaptability parameters. The first group included 11 highly responsive varieties recommended for cultivation on an intensive background, namely ‘Alyy parus’, ‘Kontinent’, ‘Laguna’, ‘Kassiopeya’, ‘Akveduk’ (Ukraine), ‘Prikumskaya 142’, ‘Eyrena’, ‘Kiprida’, ‘Terra’, ‘Oniks’, ‘Kurant’ (Russia). To obtain the largest average productivity there have been recommended to cultivate the following 11 varieties on the average agricultural background, namely ‘Aksinit’, ‘Amazonka’, ‘Kermen’, ‘Uniya’, ‘Diona’, ‘Yakhont’, ‘Yubilyarka’, ‘Belgorodskaya yantarnaya’ (Russia), ‘Zolotoye runo’, ‘Gardemarin’, ‘Andromeda’ (Ukraine), since these varieties were good adapted to various environmental conditions. The varieties ‘Agat donskoy’,‘Zolotko’,‘Krupinka’, ‘Laska’, ‘Lazurit’, ‘Krucha’, ‘Stepnoy yantar’ (Russia), ‘Burshtin’, ‘Dnepryana’, ‘Perlina odesskaya’ and ‘Shulyndinka’ (Ukraine) -to cultivate on a reduced agrofone, where they will give a fairly high yield from 8.45 to 9.67 t / ha.
The success in development of winter durum wheat varieties with a high adaptability to abio- and biotic stress conditions, large and stable productivity is usually determined by the diversity of initial material and methods for its preparation. The most efective method to develop genetic variability among winter durum wheat varieties and other grain crops is hybridization (intraspecifc, interspecifc, and intergeneric). The purpose of the current study was to evaluate the breeding material obtained in the breeding process among intraspecifc and interspecifc hybrids of diferent types of hybridization according to the main economically valuable traits and properties and to identify a more efective method/type of hybridization. The object of the study was 28 breeding lines of durum winter wheat identifed from the following types of hybridization: the 1st type was T. winter durum x T. winter durum (paired and gradual), 7 samples; the 2nd type was T. winter durum x T. winter durum (paired), 3 samples; the 3rd type was F1 (T. winter durum x. T. winter durum) x T. winter durum, 4 samples; the 4th type was T. winter aestivum x T. winter durum (direct and reverse), 7 samples; the 5th type was F1 (T. winter aestivum x. T. winter durum) x T. winter durum (triple), 7 samples. According to the comparative study results of breeding material of intraspecifc and interspecifc hybrids, it has been found that intraspecifc paired and gradual hybridization, which provided high productivity and grain quality was a more efective method for developing of winter durum wheat varieties. The rest types of crossings, primarily interspecifc, could be helpful to obtain initial material with a high level of winter tolerance, resistance to lodging and diseases, for their further use in intraspecifc gradual hybridization.
The developed winter durum wheat varieties should combine potential productivity with resistance to abiotic and biotic environmental factors through increased adaptability. The purpose of the study is to evaluate a new winter durum wheat variety “Eyrena” according to its productivity, stress factors resistance and grain quality. The current study of the variety sown after peas, maize for grain, sunflower and in green fallow was performed at the Agricultural Research Center “Donskoy” in 2014–2018. There have been presented morphological, biological, economically valuable traits of the variety “Eyrena” included in the State List of the Breeding Achievements of the Russian Federation in the North Caucasus Region since 2017. The variety is characterized with a high and stable productivity potential. The average productivity over the years of study in the competitive variety testing (2015–2018) ranged according to the forecrops as follows: 8.47 t/ha (green fallow), 6.99 t/ha (peas), 7.29 t/ha (maize for grain), 6.47 t/ha (sunflower). The average increase to the indicators of the standard variety was 0.52; 0.57; 1.41 and 0.75 t/ha, respectively. The maximum productivity (11.80 t/ha) was obtained in the variant with green fallow in 2018. The new variety, in comparison with the standard one, has an increased heat and drought resistance both in the initial phases of plant growth and development and in subsequent periods of active vegetation, has sufficient winter tolerance, and resistance to the main diseases specific for the region. Qualitative traits of grain, groats, pasta comply with the GOST requirements in the country and existing durum wheat standards. The grain hardness on average over the years of study is up to 90% and higher, nature weight is 804 g/l, falling number is 405 sec., protein content in the grain is 3.9%, gluten content is 25.2%, gluten quality (SDS test) is 37 ml, amount of carotenoid is 600 μg/%, pasta color is 4.3 points. The variety “Eyrena”, having a high productivity potential and stability, a number of positive economically valuable traits, can be a good partner to the varieties of this grain crop in the region.
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