Effect of date of heading on variation of basic components of productivity of winter wheat

Tsenov, N.; Gubatov, T.; Yanchev, I.

doi:10.5513/jcea01/21.4.2819

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…As reported by a previous study, drought stress reduces leaf chlorophyll concentration by 9%, resulting in a decrease in the photosynthetic rate of wheat [22]. This significant drought-induced change in plant physiology led to decreased plant height, diminished growth rate, decreased number of tillers, reduced relative water content, decreased grain quality parameters and, ultimately, substantial yield losses [23][24][25][26]. Thus, evaluating the yield-related agronomic traits under drought stress is very important for identifying rate-limiting traits of yield under drought conditions and selecting improved drought tolerance in a breeding program.…”

Section: Introductionmentioning

confidence: 61%

Impact of Drought Stress on Yield-Related Agronomic Traits of Different Genotypes in Spring Wheat

Xu,

Lai,

Ren

et al. 2023

Agronomy

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Drought stress is one of the major abiotic stresses to wheat worldwide, with negative effects on wheat growth and yield. Assessing genetic variation and drought stress tolerance of key agronomic and physiological traits of spring wheat and screening germplasm resources for higher drought tolerance and yield stability are a prerequisite for developing new, better-adapted spring wheat varieties. This study evaluated nine important agronomic and physiological traits in 152 spring wheat cultivars under non-stress (NS) and drought-stress (DS) conditions. Under DS conditions, grain yield per plot (GYP) and grain weight per spike (GWE) were significantly reduced by 33.8% and 31.7%, and their drought-tolerance indexes (DIs) were only 0.66 and 0.69, respectively, indicating that GYP and GWE are the most susceptible traits to drought stress. The SPAD value of flag leave at flowering stage decreased by 13.9% under DS conditions, and the DI of SPAD was 0.86. In addition, DI-SPAD was significantly positively correlated with DIs of plant height (PH), grain number per spikelet (GPS), grain number per spike (GNS), GWE and GYP, indicating that the drought tolerance and yield of wheat are closely related to chlorophyll retention. Six wheat germplasm accessions were identified for their ability to sustain grain yield and improve drought tolerance simultaneously. These results provide insights into the genetic co-variation between grain yield and drought stress tolerance and provide a theoretical basis for the development of new wheat cultivars with excellent drought tolerance and high yields in the presence and absence of drought.

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Section: Introductionmentioning

confidence: 61%

Impact of Drought Stress on Yield-Related Agronomic Traits of Different Genotypes in Spring Wheat

Xu,

Lai,

Ren

et al. 2023

Agronomy

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“…Days to heading has been reported to be associated with earlier time to maturity and higher yield in some studies but the results are not consistent. Days to heading may be important in determining the environmental conditions experienced post heading and during grain filling which impact yield potential (Ortiz‐Monasterio et al., 1994;; Assafa, 2017; Lanning et al., 2010; Tsenov et al., 2020).…”

Section: Resultsmentioning

confidence: 99%

Ancient spring wheat production in Wyoming

Thapa

Eberle

Youngquist

2023

Crop Forage & Turfgrass Mgmt

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The ancient wheats einkorn (Triticum monococcum L.), emmer (Triticum turgidum L.), and spelt (Triticum spelta L.) are currently attracting renewed consumer interest due to their unique flavor profiles and high nutritional quality compared to modern bread (Triticum aestivum) and durum (Triticum durum L.) wheat. Ancient wheats are well suited for production in marginal lands and may be well adapted to Wyoming growing conditions. A 2‐year study was conducted in three locations in Wyoming (Powell, Sheridan, and Lingle, WY) under irrigated and rainfed conditions to identify the agronomic potential of spring planted spelt, emmer, and einkorn in Wyoming. Across locations, grain yields averaged 832 lbs acre−1 for einkorn, 1492 lbs acre−1 for emmer, and 1064 lbs acre−1 for spelt with 14.7‐15.9% protein. In 2017, irrigated spring wheat yield in Wyoming averaged 3642 lbs acre−1 and dryland yield averaged 1020 lbs acre−1 (USDA, 2017). The Powell irrigated location was the highest yielding and perhaps the best suited for ancient wheat production. Continued research on variety selection and management is needed to further improve yield and profitability of ancient wheats in Wyoming.This article is protected by copyright. All rights reserved

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“…Хоча дані результати щодо впливу алельних відмінностей гена Ppd-D1 на ВР, МТЗ і УЗ не відповідають раніше одержаним з використанням ліній аналогів стародавніх сортів півдня України [9] та рекомбінантно-інбедних ліній Одеська 16 / Безоста 1 [14]. Це, імовірно, обумовлено сильним впливом на рівень продуктивності озимої пшениці умов середовища та генотипів сортів, які використані при створенні вихідного матеріалу, що залучений до досліду [15].…”

Section: результати та обговоренняunclassified

Influence of alleles of the Ppd-D1 gene and different duration of requirement in yarovization on economic valuable signs of winter bread wheat

Fedorova,

Balashova,

Fait

2023

Fakt. eksp. evol. org.

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Aim. To determine the influence of alternative alleles of the Ppd-D1 gene and phenotypic differences in the duration of the need for vernalization and their interaction on earing time and grain yield of recombinant lines of bread winter wheat. Methods. Growing plants in the field and on the vegetation site, PCR with specific primers for Ppd-D1 and Ppd-B1c genes, phenological observations, artificial vernalization, statistical analysis. Results. 136 recombinant F7 lines from crossing [F1 (Chaika//Cappelle Desperez/2В Chinese Spring) / Kharkivska 81] F2 / Obryi identified by alleles of the Ppd-D1 gene, characterized by the duration of the need for vernalization, duration of the period to earing, plant height, weight 1000 grains and grain harvest. Conclusions. Genotypes with the presence of the Ppd-D1a allele eared 2.9 days earlier than those with the Ppd-B1b allele, and the lines with a 30-day need – one day earlier than those with a 40-day need for vernalization. Different combinations of alternative alleles of the Ppd-D1 gene and characteristics of the lines regarding the need for vernalization significantly influenced the differences in the duration of the period before heading and the weight of 1000 grains. Among the lines that significantly exceeded the control varieties Antonivka and Kuyalnik in terms of yield, those with a different combination of two traits were found, but the share of lines with a combination of the Ppd-D1a gene and 30 daily need for vernalization was greater and they formed the largest yield.

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Effect of date of heading on variation of basic components of productivity of winter wheat

Cited by 7 publications

References 27 publications

Impact of Drought Stress on Yield-Related Agronomic Traits of Different Genotypes in Spring Wheat

Impact of Drought Stress on Yield-Related Agronomic Traits of Different Genotypes in Spring Wheat

Ancient spring wheat production in Wyoming

Influence of alleles of the Ppd-D1 gene and different duration of requirement in yarovization on economic valuable signs of winter bread wheat

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