Effects of high temperature during anthesis and grain filling on physiological characteristics of winter wheat cultivars

2021 ◽  
Author(s):  
Milan Mirosavljević ◽  
Sanja Mikić ◽  
Vesna Župunski ◽  
Ankica Kondić Špika ◽  
Dragana Trkulja ◽  
...  
Keyword(s):  
High Temperature ◽  
Winter Wheat ◽  
Grain Filling ◽  
Physiological Characteristics ◽  
Wheat Cultivars ◽  
Winter Wheat Cultivars

Effects of high temperature during grain filling on the content and composition of amino acids in the grains of two winter wheat cultivars

2016 ◽  
Vol 36 (18) ◽  
Author(s):  
张美微 ZHANG Meiwei ◽  
王晨阳 WANG Chenyang ◽  
敬海霞 JING Haixia ◽  
马耕 MA Geng ◽  
谢旭东 XIE Xudong ◽  
...  
Keyword(s):  
Amino Acids ◽  
High Temperature ◽  
Winter Wheat ◽  
Grain Filling ◽  
Wheat Cultivars ◽  
Winter Wheat Cultivars

scholarly journals Effect of two‐week heat stress during grain filling on stem reserves, senescence, and grain yield of European winter wheat cultivars

2020 ◽  
Vol 206 (6) ◽  
pp. 722-733 ◽  
Author(s):  
Siegfried Schittenhelm ◽  
Tina Langkamp‐Wedde ◽  
Martin Kraft ◽  
Lorenz Kottmann ◽  
Katja Matschiner
Keyword(s):  
Heat Stress ◽  
Winter Wheat ◽  
Grain Yield ◽  
Grain Filling ◽  
Wheat Cultivars ◽  
Winter Wheat Cultivars ◽  
European Winter Wheat ◽  
Stem Reserves

Gas exchange rates and nitrogen concentrations in two winter wheat cultivars during the grain-filling period

1980 ◽  
Vol 58 (19) ◽  
pp. 2110-2116 ◽  
Author(s):  
W. N. Migus ◽  
L. A. Hunt
Keyword(s):  
Winter Wheat ◽  
Flag Leaf ◽  
Grain Filling ◽  
Wheat Cultivars ◽  
N Concentration ◽  
Nitrogen Concentrations ◽  
Winter Wheat Cultivars ◽  
N Treatment ◽  
Grain Filling Period ◽  
Rate Of Decline

CO2 exchange (CER) and transpiration (TR) rates of flag leaves, penultimate leaves, and the ear of two winter wheat cultivars (cv. Fredrick and cv. Bezostaya-1), were measured at intervals during the life of the flag leaf. These were grown at two levels of nitrogen (N), 105 and 210 mg L−1, supplied from the double ridge stage of apical development. Nitrogen concentrations and dry weights of the flag and penultimate leaves, and of various other plant parts, were also measured.CER of main culm flag leaves of both cultivars declined more slowly from ear emergence to approximately 2.5 weeks postanthesis than either before or after this period. Similarly, the CER pattern of main culm penultimate leaves of Fredrick showed a plateau during this same period. By contrast, CER of the penultimate leaves of Bezostaya declined more uniformly overtime. CER of illuminated ears declined steadily from anthesis, whereas CER in the dark decreased to a maximum negative value approximately 2 weeks postanthesis. Nitrogen treatment had little effect on these CER patterns, with the exception of Bezostaya penultimate leaves, in which the rate of decline was slower for the higher N treatment.Nitrogen concentrations of the flag and penultimate leaves, and in the nongrain ear component, decreased steadily during the grain-filling period for both cultivars and N treatments. Leaf N concentration also decreased during the preanthesis period in Fredrick at both N treatments, and in Bezostaya at the lower N treatment. The time – course of N concentration in the leaves was not closely mirrored by CER, indicating that factors other than the N concentration of the leaves were important in determining the pattern of CER.TR of the flag and penultimate leaves declined from full flag leaf expansion until anthesis and then rose during a 2- to 2.5-week-postanthesis period for both cultivars and N treatments, with the exception of Bezostaya at the lower N treatment. The increase in TR during the filling period suggests that the reduced rate of decline in CER at that time may have resulted, at least partly, because a reduction in gas phase resistance offset an increase in residual resistance.

Effect of fertilization dose and sowing density on grain-filling in different winter wheat cultivars

2010 ◽  
Vol 17 (4) ◽  
pp. 656-660
Author(s):  
Jian-Hua LIU ◽  
Jun-Yi NIU ◽  
Zhi-Li YAN ◽  
Hai-Bo LI ◽  
Hong-Chuan ZOU
Keyword(s):  
Winter Wheat ◽  
Grain Filling ◽  
Wheat Cultivars ◽  
Winter Wheat Cultivars

scholarly journals Alleles of the GRF3-2A Gene in Wheat and Their Agronomic Value

2021 ◽  
Vol 22 (22) ◽  
pp. 12376
Author(s):  
Mikhail S. Bazhenov ◽  
Anastasiya G. Chernook ◽  
Ludmila A. Bespalova ◽  
Tatiana I. Gritsay ◽  
Nadezhda A. Polevikova ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Winter Wheat ◽  
Grain Filling ◽  
Wheat Cultivars ◽  
Rare Mutation ◽  
Krasnodar Krai ◽  
Milling Quality ◽  
Winter Wheat Cultivars ◽  
Spring Wheat Cultivar

The Growth-regulating factors (GRF) are a family of plant-specific transcription factors that have roles in plant growth, development and stress response. In this study the diversity of the TaGRF3-2A (TraesCS2A02G435100) gene was investigated in Russian bread wheat germplasm by means of next generation sequencing and molecular markers, and the results compared with those from multiple wheat genome and exome sequencing projects. The results showed that an allele possessing c.495G>T polymorphism found in Bezostaya 1 and designated as TaGRF3-2Ab, is connected with earlier heading and better grain filling under conditions of the Krasnodar Krai. TaGRF3-2Ab is more frequent among Russian winter wheat cultivars than in other germplasms found in the world, implying that it is adaptive for the Chernozem region. A new rare mutation of the TaGRF3-2A was found in the spring wheat cultivar Novosibirskaya 67. The molecular markers developed will facilitate utilization of TaGRF3-2A mutations in future agronomic studies and wheat improvement. Albeit GRF3-2Ab may be good at maintaining high milling quality of the grain, it should be used with caution in breeding of winter wheat cultivars in the perspective of climate change.

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