Analysis of overwintering indexes of winter wheat in alpine regions and establishment of a cold resistance model

2022 ◽  
Vol 275 ◽  
pp. 108347
Author(s):  
Yuzhuo Bao ◽  
Jinpu Xing ◽  
Yi Liang ◽  
Zhipeng Ren ◽  
Lianshuang Fu ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Cold Resistance ◽  
Alpine Regions ◽  
Resistance Model

Effects of Molybdenum and Phosphorus Fertilizers on Cold Resistance in Winter Wheat

2015 ◽  
Vol 38 (5) ◽  
pp. 808-820 ◽  
Author(s):  
Zhaojun Nie ◽  
Shuying Li ◽  
Chengxiao Hu ◽  
Xuecheng Sun ◽  
Qiling Tan ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Cold Resistance ◽  
Phosphorus Fertilizers

Duration of hardening and cold hardiness in winter wheat

1979 ◽  
Vol 57 (14) ◽  
pp. 1511-1517 ◽  
Author(s):  
D. W. A. Roberts
Keyword(s):  
Winter Wheat ◽  
Cold Hardiness ◽  
Cold Resistance ◽  
Maximum Level ◽  
Late Winter ◽  
Carbohydrate Reserves ◽  
Stage Of Development ◽  
Temperature Regimes ◽  
Number Of Leaves ◽  
Additional Reason

Experiments in which winter wheat plants were exposed to two different controlled hardening-temperature regimes (constant 3 °C, and 5.5 °C (day): 3.5 °C (night)) for long periods (up to 15 weeks) indicate that cold hardiness changes with time.The cold hardiness in plants grown from seed at 3 °C drops rapidly immediately after moistening and reaches a minimum 2–3 weeks later. Hardiness then begins to increase and reaches a maximum that lasts approximately from the 7th to the 11th week of growth after which it slowly declines.The patterns of change in cold hardiness during growth at 3 °C, and 5.5 °C:3.5 °C were almost synchronous if hardiness was plotted against duration of hardening, but were not synchronous if hardiness was plotted against stage of development as measured by the number of leaves produced. A somewhat similar result was obtained if plants grown for 3 weeks at 21 °C before hardening were compared with plants grown from dry seeds under the same hardening conditions. These experiments show that duration of hardening is more important in determining the level of cold resistance and the ability of wheat to retain its cold resistance than is stage of development, as measured by the number of leaves produced at the time cold resistance is measured.When plants seeded outdoors in mid-September were transferred at various dates (0–30 weeks after seeding) during the fall or winter to standardized hardening conditions in a growth cabinet for 0–15 weeks before freezing, their cold resistance changed in a way that suggests that plants in the field undergo the same pattern of changes in cold resistance as plants reared continuously in a growth chamber. This result suggests that the long exposure to hardening temperatures is one of the reasons why wheat in the field has less cold resistance in late winter than in autumn. Loss of carbohydrate reserves during winter may be an additional reason for this phenomenon.Under both growth cabinet and field conditions, increasing cold hardiness coincided with vernalization. Maximum cold hardiness was retained for several weeks after the completion of vernalization. These results suggest that the development of the maximum level of cold resistance may be related to the vernalization process.

scholarly journals Detection of the varietal purity in sample of harvested wheat and triticale grains by prolamin marker

2011 ◽  
Vol 49 (No. 3) ◽  
pp. 95-98 ◽  
Author(s):  
T. Vyhnánek ◽  
J. Bednář
Keyword(s):  
Winter Wheat ◽  
Genetic Marker ◽  
Cold Resistance ◽  
Weather Conditions ◽  
Seed Sample ◽  
Practical Application ◽  
Wheat Genotypes ◽  
Baking Quality ◽  
Varietal Purity

In 1997 and 1998 we used samples of harvested grain to verify the possibility of distinguishing 14 winter wheat genotypes and six triticale genotypes and detecting the impurity on the basis of the detection of polymorphism of prolamin kernel proteins using the methods of the PAGE ISTA. On the basis of the identity index two sister prolamin lines with different percentage of participation, which was based on the weather conditions of the year of harvest, were discovered in seven wheat genotypes (Astella, Brea, Hana, Ilona, Siria, Sofia and Šárka) and two triticale genotypes (Tornádo and KM 779). A foreign genotype was detected in the Hana and Astella varieties. The identity index of the impurity to the Astella and Hana variety (i.e. ii = 0.28 and ii = 0.20, respectively) was considerably lower. In an unknown genotype (impurity) we detected the gliadin block Gld 1B3, which is the genetic marker of rye translocation T1BL.1RS, the Sr31 gene of resistance to black rust, higher cold resistance and the marker of poor baking quality (presence of secalin genes). The results proved the potential practical application of the method of electrophoretic detection of polymorphism of prolamin proteins as markers of impurities of foreign genotypes in a seed sample.

LncRNA improves cold resistance of winter wheat by interacting with miR398

2020 ◽  
Vol 47 (6) ◽  
pp. 544
Author(s):  
Qiuwei Lu ◽  
Fuye Guo ◽  
Qinghua Xu ◽  
Jing Cang
Keyword(s):  
Winter Wheat ◽  
Stress Tolerance ◽  
Cold Resistance ◽  
Resistance Mechanism ◽  
Temperature Tolerance ◽  
Quantitative Detection ◽  
Low Temperature Tolerance ◽  
Non Coding Rna ◽  
Competing Endogenous Rnas ◽  
Regulatory Loop

One of the important functions of long non-coding RNA (lncRNA) is to be competing endogenous RNAs (ceRNAs). As miR398 is reported to respond to different stressors, it is necessary to explore its relationship with lncRNA in the cold resistance mechanism of winter wheat. Tae-miR398-precursor sequence was isolated from the winter wheat (Triticum aestivum). RLM-RACE verified that tae-miR398 cleaved its target CSD1. Quantitative detection at 5°C, –10°C and –25°C showed that the expression of tae-miR398 decreased in response to low temperatures, whereas CSD1 showed an opposite expression pattern. LncR9A, lncR117 and lncR616 were predicted and verified to interact with miR398. tae-miR398 and three lncRNAs were transferred into Arabidopsis thaliana respectively. The lncR9A were transferred into Brachypodium distachyom. Transgenic plants were cultivated at –8°C and assessed for the expression of malondialdehyde, chlorophyll, superoxide dismutase and miR398-lncRNA-target mRNA. The results demonstrate that tae-miR398 regulates low temperature tolerance by downregulating its target, CSD1. lncRNA regulates the expression of CSD1 indirectly by competitively binding miR398, which, in turn, affects the resistance of Dn1 to cold. miR398-regulation triggers a regulatory loop that is critical to cold stress tolerance in wheat. Our findings offer an improved strategy to crop plants with enhanced stress tolerance.

Traditional Combining‐Ability and Gardner‐Eberhart Analyses of a Diallel for Cold Resistance in Winter Wheat 1

Crop Science ◽  
1983 ◽  
Vol 23 (2) ◽  
pp. 314-318 ◽  
Author(s):  
P. C. Parodi ◽  
W. E. Nyquist ◽  
F. L. Patterson ◽  
H. F. Hodges
Keyword(s):  
Winter Wheat ◽  
Combining Ability ◽  
Cold Resistance

CHANGES IN COLD HARDINESS ACCOMPANYING DEVELOPMENT IN WINTER WHEAT

1968 ◽  
Vol 48 (4) ◽  
pp. 369-376 ◽  
Author(s):  
D. W. A. Roberts ◽  
M. N. Grant
Keyword(s):  
Low Temperature ◽  
Winter Wheat ◽  
Cold Hardiness ◽  
Cold Resistance ◽  
Winter Survival ◽  
Growth Chamber ◽  
Temperature Resistance ◽  
Varietal Differences ◽  
Low Temperature Resistance ◽  
Exact Timing

The cold resistance of 18 varieties of winter wheat hardened in a growth chamber was studied at various stages of development and the results were compared with the field survival of these varieties.In the growth chamber two maxima of cold resistance were found, the first for the dry or freshly moistened seed and the second when plants had approximately 4 to 6 leaves. Varietal differences were found in the exact timing of this second maximum and in its duration. As a result, some varieties changed their rank for cold resistance as they developed.Partial agreement was observed between the field survival of varieties sown at different dates and the changes in cold resistance of these varieties as they developed in the growth chamber.From these tests, a procedure has been developed that should enable fairly reliable predictions to be made of field survival of winter wheat in any area where low-temperature resistance is the major factor in winter survival.

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