Stability and Plasticity of Collection Samples of Bread Spring Wheat by Productivity Indices

Abstract

The results of evaluation of ecological stability and plasticity of 20 collection samples of bread spring wheat by productivity indices for 2015-2017 are presented. During the research, weather conditions differed from the average long-term indicators of temperature regime, the amount of precipitation and their distribution in some months that gave an opportunity to evaluate wheat collection material by adaptability and to identify the best. Collection samples were differentiated by the grain number per spike. 2016 was the most favorable for growth and development of plants (HTC = 1.25), with the index of conditions 3.5, and the average grain number per spike 40.9. According to the trait, the samples Laska, Sudarynya (BLR), Margarita, Chelyaba yubileynaya (RUS), Shortandinskaya 95 uluch. (KAZ) etc. with regression coefficient (bi = 0.69-0.99) were identified. This testifies to the plasticity of these genotypes in stressful conditions and therefore they are promising for use in breeding for the trait. Meteorological conditions of cultivation significantly influenced on grain formation with a high weight of 1000 grains, which caused a significant variation of this trait during the years of study. There were identified the samples which when weather conditions fluctuate had regression coefficient close to one (bi = 0.63-0.96) Shortandinskaya 95 uluch., Astana, Kazakhstanskaya 22 (KAZ), Laska (BLR), Dobrynya, Margarita, Altayskaya 99 (RUS), MIP Zlata, Erythrospermum 12-36 (UKR) etc. By grain weight per spike there were found samples: Erythrospermum 12-36 (UKR), Astana, Zhenis, Kazakhstanskaya 22, Shortandinskaya 95 uluch. (KAZ), Sudarynya (BLR), Chelyaba yubileynaya, Altayskaya 99 (RUS) etc. with values of bi = 0.58-0.97. They are of great importance in spring wheat breeding for given trait and may be involved in hybridization. As a result of the researches conducted, stable and plastic collection samples of bread spring wheat were distinguished by productivity indices (grain number per spike, weight of 1000 grains, grain mass of per spike) Shortandinskaya 95 uluch., Kazakhstanskaya 22 (KAZ), Margarita (RUS), Laska, Sudarynya (BLR), MIP Zlata (UKR), which can be used in the breeding process as a source material for increasing adaptive capacity.

Ecological plasticity and stability of promising lines of spring wheat (Triticum aestivum L.) in terms of yield

“…Àäàïòèâí³ñòü -îäíà ç íàéâàae-ëèâ³øèõ âëàñòèâîñòåé ñîðòó, òîìó ¿é ïðèä³ëÿþòü çíà÷íó óâàãó â ñåëåêö³éíèõ ïðîãðàìàõ á³ëüøîñò³ êðà¿í ñâ³òó [8]. Ïîêàçíèêè åêîëîã³÷íî¿ ïëàñòè÷íîñò³ òà ñòàá³ëüíîñò³ çà ïðîäóêòèâí³ñòþ ³ ê³ëüê³ñíèìè îçíàêàìè, ùî õàðàêòåðèçóþòü âðîaeàéí³ñòü ³ ÿê³ñòü çåðíà, âèçíà÷àþòü äëÿ ð³çíèõ êóëüòóð: ïøåíèö³ îçèìî¿ [9,10], ïøåíèö³ ÿðî¿ [11][12][13][14][15], ÿ÷ìåíþ ÿðîãî [16][17][18], òðèòèêàëå îçèìîãî [19,20], â³âñà [21,22], ð³ïàêó îçèìîãî [23], ïðîñà [24], êóêóðóäçè [25], êâàñîë³ [26], ëüîíó [27] òîùî.…”

Influence of Seeding Rate on the Productivity and Quality of Soft Spring Wheat Grain (Triticum Aestivum L.)

“…Wheat occupies a prominent place among grain crops around the world and is the main food product for about 35% of the world's population and provides about 20% of humanity's energy needs (Demydov et al, 2017a;Velimirović et al, 2023). Today, on the territory of our country, the question arises of solving the scientific and technical problem of improving the regulatory provision of grain quality and harmonizing it with international standards (Khomenko et al, 2018). Significant success in social and cultural development is achieved only by those countries that are able to ensure the highest quality of their products.…”

Stability and Plasticity of Collection Samples of Durum Spring Wheat in the Forest-Steppe Conditions of Ukraine

“…Since the weather conditions become more and more changeable every year, the creation of new varieties with a high level of productivity, regardless of growing conditions, remains relevant up to now. The application of ecological plasticity and stability is widely used in such agricultural crops as winter bread wheat [22], spring bread and hard wheat [23,24], winter and spring barley [25−28], soybean [29], winter triticale [30], oats [31,32], corn [33], bean [34], etc. The stability of the breeding trait of sample is the deviation of empirical data in each environmental condition from the ecological plasticity of the breeding trait, that is, from average response to changing growing conditions.…”