scholarly journals Spectral method of evaluation of photosynthetic apparatus thermal resistance

2016 ◽  
Vol 14 (2) ◽  
pp. 239-244
Author(s):  
V. V. Shevchenko ◽  
O. Yu. Bondarenko
Keyword(s):  
Thermal Stability ◽  
Winter Wheat ◽  
Heat Resistance ◽  
Spectral Parameter ◽  
Photosynthetic Apparatus ◽  
Rapid Screening ◽  
Short Term ◽  
Wheat Varieties ◽  
Method Of Evaluation ◽  
Relationship Of

Aim. The aim of this work is to evaluate the possibilities of application of the spectral parameter - the relationship of the absorption values at wavelengths of 680 and 850 nm (k = A680 / A850) for testing heat resistance of plants to change the size of chloroplasts at short-term heating.  Methods. The short-term (5 minutes) heating in the range 25-45oC was carried out for chloroplasts isolated from two-week-old pea, corn and 4 winter wheat varieties differing in heat resistance. From the absorption spectra of chloroplasts was calculated changes of parameter k. Results. All heated chloroplasts showed changes in the spectral parameter k. Particularly strong and stable changes observed during heating at 40-45 ° C. In terms of changes in the spectral parameter plants are ranged in the following order - corn, pea, wheat. Conclusions. The intensity of the k changes coincided with the preliminary estimation of thermal stability for corn and different varieties of winter wheat. It is recommended to use the spectral parameter k for the rapid screening of varieties on the thermal stability of the photosynthetic apparatus within the same species.Key words: chloroplasts of different species of plants, the photosynthetic apparatus, short-term heating, evaluation of the thermal stability.

scholarly journals Functional features of photosynthetic apparatus of modern high-yielding winter wheat varieties

2016 ◽  
Vol 0 (1(30)) ◽  
pp. 79-88
Author(s):  
В. В. Моргун ◽  
О. О. Стасик ◽  
Д. А. Кірізій ◽  
Г. О. Прядкіна
Keyword(s):  
Winter Wheat ◽  
Photosynthetic Apparatus ◽  
Wheat Varieties ◽  
Functional Features ◽  
Winter Wheat Varieties

RESPIRATION OF WINTER WHEAT PLANTS AT LOW TEMPERATURES

1931 ◽  
Vol 5 (3) ◽  
pp. 337-354 ◽  
Author(s):  
R. Newton ◽  
J. A. Anderson
Keyword(s):  
Winter Wheat ◽  
Low Temperatures ◽  
Respiratory Activity ◽  
Freezing Point ◽  
Frost Damage ◽  
Wheat Varieties ◽  
Relationship Of ◽  
Winter Wheat Varieties ◽  
Better Than ◽  
Hardened Condition

Respiration measurements at −7°, 0° and 7 °C. with four winter wheat varieties and two spring wheat varieties grown in the field, were carried on during the fall and early winter of four years. The rate of respiration in winter wheat decreased as the plants hardened. At the outset all varieties respired about alike. After hardening began, the rates at −7 °C. were in the inverse order of hardiness, with the spring wheats faster than the least hardy winter wheat. As hardening progressed, the differentiation of the winter varieties at −7 °C. became sharper, and could be observed also at 0 °C., but at 7 °C. very little if any relationship of this sort developed. The spring varieties, because of frost damage, could not be compared with winter varieties in the fully hardened condition, but their behavior early in the season confirms the general conclusion that at the freezing point or lower temperatures respiratory activity is inversely related to winter hardiness. This accounts for the observed fact that hardy varieties maintain their sugar reserves better than non-hardy varieties during the winter.

scholarly journals Response of the photosynthetic apparatus of winter wheat varieties to the combined action of drought and high temperature

2021 ◽  
Vol 53 (5) ◽  
pp. 387-405
Author(s):  
A.C. Kedruk ◽  
◽  
D.A. Kiriziy ◽  
O.G. Sokolovska-Sergienko ◽  
O.O. Stasik ◽  
...  
Keyword(s):  
High Temperature ◽  
Winter Wheat ◽  
Photosynthetic Apparatus ◽  
Wheat Varieties ◽  
Combined Action ◽  
Winter Wheat Varieties

Influence of abiotic factors on photosynthesis and production process of different winter wheat varieties

2017 ◽  
Vol 4 (1) ◽  
pp. 56-62
Author(s):  
B. Guliaev ◽  
H. Huliaieva ◽  
V. Patyka
Keyword(s):  
Winter Wheat ◽  
Root System ◽  
Surface Area ◽  
Mineral Nutrition ◽  
Photosynthetic Apparatus ◽  
Active Surface ◽  
Active Surface Area ◽  
Wheat Varieties ◽  
Grain Productivity ◽  
Winter Wheat Varieties

Aim. The investigation of photosynthesis and production process in winter wheat varieties, different in their grain productivity, its connection to the active surface area of the root system in optimal conditions, under drought and mineral nutrition defi ciency. Methods. Physiological, biochemical, gas exchange analysis, statisti- cal methods. Results. It was demonstrated that different conditions of mineral nutrition and soil drought have impact on the intensity of photosynthesis, photo- and dark respiration, the content of pigments in the fl ag leaf of winter wheat plants; the results obtained testify to the interrelation of these indices to the active surface area of the root system and grain productivity of winter wheat varieties, different in potential grain productivity. Conclusions. It was determined that under drought the photosynthetic apparatus of a highly productive winter wheat variety Smuhlianka demonstrated higher stability compared to the photosynthetic apparatus of the vari- ety Myronivska 808, moderately resistant to drought conditions. At the same time, highly intensive varieties of winter wheat, Favorytka and Smuhlianka, had a larger active surface area of the root system and chlorophyll content in leaves, compared to Myronivska 808 plants, notable for their lower grain productivity. It was deter- mined that there was considerable reliable correlation between the intensity of fl ag leaf photorespiration and the active surface area of the root system in winter wheat plants of varieties Myronivska 808 and Smuhlianka (r = 0.805). Considerable correlation (r = 0.878) was found between the intensity of fl ag leaf photorespiration in the heading-blossoming phase and the sum of chlorophylls in these leaves. It was determined that the index S r act × chlorophyll may be used to estimate the active surface area of the root system with the error of up to 3.8 % for fi ve winter wheat varieties.

scholarly journals Investigation of rheological properties of winter wheat varieties during storage

2015 ◽  
Vol 8 (1) ◽  
pp. 63-69
Author(s):  
M. Móré ◽  
G. Diósi ◽  
P. Sipos ◽  
Z. Győri
Keyword(s):  
Winter Wheat ◽  
Rheological Properties ◽  
Storage Period ◽  
Absorption Capacity ◽  
Short Term ◽  
Wheat Varieties ◽  
Short Term Storage ◽  
Term Storage ◽  
Winter Wheat Varieties

Abstract The paper shows the results of some experimental researches on the rheological characteristics of the dough obtained from the flour of three winter wheat varieties. We used valorigraph test to determine the rheological properties of wheat flour dough, because it determines the quality of the end-products. Winter wheat varieties (Lupus, Mv Toldi and GK Csillag) were produced and their samples were collected on Látókép Research Farm of the University of Debrecen in the crop year of 2011/2012. We have carried out a short-term storage experiment (from July to August, 2012). We analysed the changes in water absorption capacity, dough stability time and valorigraph quality number for 3 times (24.07.2012, 31.07.2012, 21.08.2012) during short-term storage. Our results showed that the baking quality of Lupus, Mv Toldi and GK Csillag improved during the storage period.

QUALITATIVE STABILITY OF WINTER WHEAT VARIETIES AT DIFFERENT LOCATIONS

2000 ◽  
Vol 48 (2) ◽  
pp. 191-195
Author(s):  
C. Kondora ◽  
M. Szabó ◽  
A. Máté ◽  
G. Szabó
Keyword(s):  
Quality Control ◽  
Winter Wheat ◽  
Evaluation Method ◽  
Wheat Varieties ◽  
Local Conditions ◽  
Grain Yields ◽  
Baking Quality ◽  
Small Plot ◽  
High Yielding Varieties ◽  
Winter Wheat Varieties

Owing to the significant differences in the adaptability of state-registered varieties, those which can adapt well to the local conditions should be given preference. There are several high-yielding varieties available in Hungary with excellent agronomic properties, good adaptability and satisfactory baking quality. This study was conducted to analyse the adaptability of 34 state-registered winter wheat varieties tested in the small plot trials of the National Institute for Agricultural Quality Control (NIAQC) at 5–9 locations between 1994 and 1997 based on their gluten quantity and farinographic index. For the comparison of the varieties the evaluation method of Eberhart and Russell (1966) was applied as modified by Bedő and Balla (1977). The qualitative stability and adaptability values of the varieties differ from the adaptability and stability values calculated from the grain yields. Some winter wheat varieties have good qualitative adaptability and stability, while others have special adaptability and poor qualitative stability, but the majority of the varieties do not belong to these groups.

Impact of the estimated doses of mineral fertilizers on the infestation mildew, pyrenophora and yield of winter wheat varieties

2020 ◽  
Author(s):  
A.Y. Ozheredova ◽  
◽  
A. N. Esaulko ◽  
L.A. Mikhno ◽  
A.P. Shutko ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Winter Wheat ◽  
Mineral Fertilizers ◽  
Wheat Varieties ◽  
Leached Chernozem ◽  
Winter Wheat Varieties

The article presents materials on the influence of calculated doses of mineral fertilizers on the incidence of powdery mildew, pyrenophorosis and yield of winter wheat varieties cultivated on leached Chernozem for 2016-2018.

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