Parameters of adaptability and stability of winter durum wheat varieties according to various forecrops in the Rostov region

Abstract

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.

Allelic Variation of Glu-A1 and Glu-B1 Genes in Winter Durum Wheat and Its Effect on Quality Parameters

“…In Russia, a decrease in the area under spring durum wheat due to its lower yields has led to the production of pasta from common wheat, which has had a negative impact on its quality [ 15 ]. Winter durum wheat in Central and Eastern Europe is sown in autumn and gains access to more moisture accumulated in the soil due to autumn and winter precipitation [ 16 ]; it undergoes the stages of grain setting to grain filling under less stressed hydrothermal conditions, thus the yield potential is higher than that of spring wheat [ 17 , 18 ]. To improve the competitiveness of winter durum wheat relative to spring wheat, breeding centres in southern Russia are actively performing breeding for quality [ 19 , 20 , 21 , 22 ].…”

Assessment of adaptability parameters in hulled oat germplasm accessions in terms of their yield in the environments of Kirov Province

“…Известно, что если высокая средняя урожайность есть результат высокой продуктивности только в благоприятных условиях, то такой сорт будет хуже тех, которые обладают лучшей адаптацией к неблагоприятным условиям (Nevo, 2015). В связи с этим изучение экологической пластичности и адаптивности генофонда культуры и созданных на его основе селекционных линий в предполагаемом регионе распространения нового сорта является наиболее актуальным вопросом эффективного внедрения селекционного достижения в производство (Alabushev et al, 2019;Pakudin, Lopatina, 1984).…”

Assessment of adaptability and potential productivity of spring soft wheat in the conditions of the Ryazan region

“…Селекционная направленность работы в настоящее время ориентирована на адаптивность к контрастным погодным условиям [8] и, прежде всего к экстремальным, которые в наибольшей степени ограничивают потенциал возможной урожайности [9,10,11]. Показатели пластичности, стабильности и гомеостатичности являются неотъемлемыми компонентами акклиматизации [11,12] и определяют уровень адаптации сорта к различным стрессорам [13].…”