scholarly journals Тhe influence of low temperature on mitosis and meiosis when estimating winter wheat (T. aestivum L.) frost resistance and winter hardiness in sprouted seeds

2017 ◽  
Vol 5 (0) ◽  
pp. 92-103
Author(s):  
L. O. Khomenko ◽  
I. I. Lialko
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Frost Resistance ◽  
Winter Hardiness ◽  
Sprouted Seeds ◽  
Mitosis And Meiosis

CONTROLLED LOW TEMPERATURE TESTS OF SPROUTED SEEDS AS A MEASURE OF COLD HARDINESS OF WINTER WHEAT VARIETIES

1958 ◽  
Vol 38 (1) ◽  
pp. 1-7 ◽  
Author(s):  
J. E. Andrews
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Cold Hardiness ◽  
Close Agreement ◽  
Reliable Method ◽  
Winter Hardiness ◽  
Wheat Varieties ◽  
Limited Space ◽  
Sprouted Seeds ◽  
Winter Wheat Varieties

Twenty winter wheat varieties were tested for cold hardiness in the sprouted seed stage. Their relative cold hardiness at this stage was in close agreement with their relative cold hardiness in freezing tests of young plants and with their field winter hardiness. Testing by the procedure outlined is apparently a reliable method of testing for cold hardiness. It permits the testing of a large number of varieties in a limited space.

Seasonal changes in the composition of winter wheat plants, in relation to frost resistance

1926 ◽  
Vol 16 (4) ◽  
pp. 522-538 ◽  
Author(s):  
R. Newton ◽  
W. R. Brown
Keyword(s):  
Moisture Content ◽  
Winter Wheat ◽  
Seasonal Changes ◽  
Frost Resistance ◽  
Winter Hardiness ◽  
Active Cell ◽  
The Press ◽  
Plant Constituents

1. The adaptation of plants to resist frost appears to depend on seasonal changes which give the protoplasm stability. A study has been made of the changes occurring in winter wheat plants, of varieties differing widely in winter hardiness, during the fall and winter months.2. By analysing the press-juice as well as the entire tissues at progressive dates, it has been possible to study the distribution of the more important constituents between the physiologically active cell fluids and the relatively inert supporting framework.3. One of the most important changes in the quantitative relations of the various plant constituents is the reduction in moisture content. This takes place to a greater degree in hardy varieties. The resulting concentration of colloids and sugars in the cell fluids increases the resistance to freezing.

scholarly journals Biochemical and Physicochemical Background of Mammalian Androgen Activity in Winter Wheat Exposed to Low Temperature

2017 ◽  
Vol 37 (1) ◽  
pp. 199-219 ◽  
Author(s):  
Anna Janeczko ◽  
Jolanta Biesaga-Kościelniak ◽  
Michał Dziurka ◽  
Maria Filek ◽  
Katarzyna Hura ◽  
...  
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Lipid Membranes ◽  
Frost Resistance ◽  
Redox Homeostasis ◽  
Physiological Role ◽  
Cellular Level ◽  
Wheat Seedlings ◽  
Wheat Leaves ◽  
Induced Changes

Abstract Understanding of the physiological role of mammalian hormone—androstenedione (AN)—in plants is scant and the mechanisms of its action at a cellular level are practically unknown. The aim of this study was to investigate the physicochemical and biochemical background of AN activity in winter wheat exposed to low temperature. Cold periods are important in the lifecycle of this species as they induce frost resistance and further generative development. Wheat seedlings (control and AN-supplemented) were acclimated 2 weeks in cold and then exposed to frost (−12 °C). AN supplementation reduced frost damages by 30%. Moreover, AN also accelerated generative development of wheat. The AN-induced changes in redox homeostasis seemed to be important for processes of acclimation to low temperature and generative induction. AN influenced hormonal balance in wheat and stimulated accumulation among other gibberellins and cytokinins. For example, in aerial part of plants, the content of GA3 was increased by AN in 12 days of cold by about 30%, whereas the content of cis-zeatin was increased by 65%. AN was absorbed into plant membranes (Langmuir bath studies). The membrane absorption of AN increased the distance between lipid molecules and this may be an important step in the AN-induced enhancement of frost resistance. AN interaction with lipid membranes showed similarity to the interactions of some known regulators stimulating flowering in plants, and thus it may also underlie the acceleration of wheat development. Androstenedione was naturally present in wheat leaves (5–21 pg g−1 FW).

CATALASE ACTIVITY OF WHEAT LEAF JUICE IN RELATION TO FROST RESISTANCE

1931 ◽  
Vol 5 (3) ◽  
pp. 333-336 ◽  
Author(s):  
R. Newton ◽  
W. R. Brown
Keyword(s):  
Winter Wheat ◽  
Catalase Activity ◽  
Frost Resistance ◽  
Late Summer ◽  
Winter Hardiness ◽  
Wheat Leaf ◽  
Wheat Leaves ◽  
Leaf Juice

The catalase activity of press-juice of winter wheat leaves collected from the field at any time during the late summer and fall was directly related to the winter hardiness of varieties.

INFLUENCE DE LA LUMIERE ET DE LA TEMPERATURE SUR LA TENEUR EN ACIDE LINOLENIQUE ET LA RESISTANCE AU GEL DU BLE D’HIVER

1980 ◽  
Vol 60 (2) ◽  
pp. 349-355 ◽  
Author(s):  
C. WILLEMOT ◽  
L. PELLETIER
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Linolenic Acid ◽  
Mode Of Action ◽  
Frost Resistance ◽  
Frost Hardiness ◽  
Frost Hardening ◽  
Long Time

The correlation between accumulation of linolenic acid in the crowns and roots of winter wheat and its frost hardening at low temperature is indirect. It results from their common requirement for light and low temperature. Light mainly produces energy and carbon reserves. The partial hardening obtained in darkness could be eliminated by preetiolation. The high levels of linolenic acid and frost resistance reached after hardening were maintained for a long time in darkness. The levels of linolenic acid and frost hardiness decreased faster at low temperature in hardened plants after treatment with BASF 13-338, a substituted pyridazinone, than in plants deprived of light. The mode of action of BASF 13-338 is apparently not limited to the inhibition of photosynthesis.

Alterations in cell walls of winter wheat roots during low temperature acclimation

1998 ◽  
Vol 152 (4-5) ◽  
pp. 473-479 ◽  
Author(s):  
Alexey I. Zabotin ◽  
Tatyana S. Barisheva ◽  
Olga A. Zabotina ◽  
Irina A. Larskaya ◽  
Vera V. Lozovaya ◽  
...  
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Cell Walls ◽  
Temperature Acclimation ◽  
Wheat Roots

scholarly journals Modeling Winter Hardiness Formation in Winter Wheat Plants

2020 ◽  
Vol 15 (1) ◽  
pp. 31-42
Author(s):  
Daria Blyshchyk ◽  
Anatoliy Polevoy ◽  
Pavel Feoktistov
Keyword(s):  
Winter Wheat ◽  
Winter Hardiness
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