scholarly journals Growth and productivity of wheat plants under drought in the critical phase of ontogenesis

2021 ◽  
Vol 29 ◽  
pp. 35-40
Author(s):  
O. I. Zhuk ◽  
O.O. Stasik
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Surface Area ◽  
Leaf Surface ◽  
Triticum Aestivum L ◽  
Grain Number ◽  
Plant Weight ◽  
Inhibition Of Growth ◽  
Critical Phase ◽  
Leaf Surface Area

Aim. The goal of this work was to study the effect of drought in the critical phase of ontogenesis on the growth and productivity of breed winter wheat plants (Triticum aestivum L.). Methods. Wheat plants of cultivars Darunok Podillya and Podolyanka were grown under optimal nutrition and well-water conditions until the earing-flowering phase, after that the experimental plants were transferred to drought regime for 8 days, after that the optimal water supply was restored to the end of vegetation. During the experiment, the leaf surface area, the mass of internodes and ear were determined. Ripened plants were analyzed according to the structure of the yield. Results. It was established that the effect of drought in the critical phase of ontogenesis the earing-flowering caused to the decreasing in leaf surface area, mass of internodes, ear, mass and number of grains in the ear and plant, weight of 1000 grains. Conclusions. Water deficit in the soil in the critical phase of earing-flowering led to a decrease in the productive of breed winter wheat plants due to the inhibition of growth of ear, decreasing grain number and the mass of ear and grains. Keywords: Triticum aestivum L., internode, ear, productivity, drought.

scholarly journals Reproductive ability of common winter wheat plants under drought

2019 ◽  
Vol 24 ◽  
pp. 86-91 ◽  
Author(s):  
O. I. Zhuk
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Leaf Area ◽  
Triticum Aestivum L ◽  
Stem Length ◽  
Soil Drought ◽  
Grain Number ◽  
Reproductive Ability ◽  
Inhibition Of Growth ◽  
Critical Phase

Aim. The goal of this work was to study the effect of soil drought on the reproductive ability of common winter wheat plants (Triticum aestivum L.). Methods. Wheat plants of cultivars Yednist and Zbruch were grown under optimal nutrition and well-watered conditions to the earing-flowering phase, after that the experimental plants were transferred to drought regime for 10 days, after that the optimal water supply was restored to the end of vegetation. During the experiment, the stem length and the leaf area were measured. Ripened plants were analyzed according to the structure of the yield. Results. It is established that the effect of drought in the critical phase of ontogenesis the earing-flowering led to the decreasing the stem length, the leaf area, the mass of the ear and grains, number of grains more in Zbruch cultivar than in Yednist cultivar. In Zbruch cultivar under drought the number of productive stems per plant decreased. Conclusions. Water deficiency in the soil in the critical phase of earing-flowering led to a decrease in the reproductive ability of winter wheat plants due to the inhibition of growth of stem, reduction of the leaf area, the grain number and the mass of ear and grains. Keywords: Triticum aestivum L., stem, ear, productivity, drought.

scholarly journals Potential productivity realization of common winter wheat plants under drought

2020 ◽  
Vol 27 ◽  
pp. 77-82
Author(s):  
O. I. Zhuk
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Soil Drought ◽  
Well Water ◽  
Grain Number ◽  
Potential Productivity ◽  
Reproductive Ability ◽  
Inhibition Of Growth ◽  
Critical Phase

Aim. The goal of this work was to study the effect of soil drought on the reproductive ability of common winter wheat plants (Triticum aestivum L.). Methods. Wheat plants of cultivars Kujalnik and Ladijinka were grown under optimal nutrition and well-water conditions to the earing-flowering phase, after that the experimental plants were transferred to drought regime for 8 days, after that the optimal water supply was restored to the end of vegetation. During the experiment, the stem and ear length were measured. Ripened plants were analyzed according to the structure of the yield. Results. It is established that the effect of drought in the critical phase of ontogenesis the earing-flowering led to the decreasing the stem and ear length, the mass of the ear and grains, number of grains on plant. Conclusions. Water deficit in the soil in the critical phase of earing-flowering led to a decrease in the productive of winter wheat plants due to the inhibition of growth of stem and ear, decreasing grain number and the mass of ear and grains. Keywords: Triticum aestivum L, stem, ear, productivity, drought.

scholarly journals Productivity of winter wheat plants under drought

2018 ◽  
Vol 23 ◽  
pp. 63-67 ◽  
Author(s):  
O. I. Zhuk
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Water Supply ◽  
Plant Height ◽  
Triticum Aestivum L ◽  
Soil Drought ◽  
Inhibition Of Growth ◽  
Drought Conditions ◽  
Critical Phase ◽  
Yield Structure

Aim. The goal of research was to study the effects of soil drought on the productivity of winter wheat plants (Triticum aestivum L.). Methods. Wheat plants of the cultivars of Zolotocolosa and Astarta were grown under optimal nutrition and moisture to the earing-flowering phase. After the beginning of it the experimental plants were transferred to drought conditions for 8 days, after that the optimal water supply was restored to the end of the vegetation. The yield structure was analyzed in mature plants. Results. It is established that the effect of drought in the critical phase of ontogenesis led to a decrease in plant height, ear size, mass and number of grains in it. At the same time, the number of grains in ears of plants decreased more significantly in the cultivar Zolotocolosa compared to the Astarta, especially in the tillers. The loss of grains mass from the ear was lower in cultivar Zolotocolosa than to the Astarta. Conclusions. Water deficit in the soil in the critical phase of ear-flowering led to a decrease in the productivity of wheat plants due to the inhibition of growth, the laying and the formation elements of the ear and grains, that depended on the specificity of the cultivar. Keywords: Triticum aestivum L., stem, ear, productivity, drought.

Relationship of Pre-anthesis Fructan Metabolism to Grain Numbers in Winter Wheat (Triticum aestivum L.)

1986 ◽  
Vol 13 (3) ◽  
pp. 391 ◽  
Author(s):  
JE Hendrix ◽  
JC Linden ◽  
DH Smith ◽  
CW Ross ◽  
IK Park
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Average Degree ◽  
Grain Number ◽  
Degree Of Polymerisation ◽  
Harvest Dates ◽  
Fructan Metabolism ◽  
Relationship Of

Four cultivars of winter wheat were analysed for non-structural carbohydrates at four harvest dates starting at inflorescence initiation and ending at anthesis. Grain number was determined from comparable plants harvested at maturity. Fructose, glucose, sucrose, and fructans were quantified in extracts of stems and inflorescences. In stems the content of the four carbohydrates increased until about a week before anthesis. During the week before anthesis the trend for the sugars was variable, but fructan content continued to increase. In inflorescences, trends for sugars were similar to those in stems; however, fructan content peaked 7-10 days before anthesis. Peak quantities of fructans in inflorescences and the quantities degraded after the peak were both correlated with grain numbers. The average degree of polymerisation of fructans from stems was 5 with most being in the range from 3 to 7. The degree of polymerisation in inflorescences ranged from 3 to 56. All of these data indicate that inflorescences differ from stems in their control of fructan metabolism.

scholarly journals Influence of various phytohormones on the growth and development of the Solnechny potato variety in vitro

2021 ◽  
Vol 36 ◽  
pp. 05008
Author(s):  
O.O. Novikov ◽  
M.S. Romanova ◽  
N.I. Leonov ◽  
E.I. Kosinova
Keyword(s):  
Surface Area ◽  
Potato Variety ◽  
Nutrient Medium ◽  
Growth And Development ◽  
Leaf Surface ◽  
Nutrient Media ◽  
Plant Weight ◽  
Total Leaf ◽  
Leaf Surface Area

In the work, the study of six different nutrient medium compositions’ influence on the growth and development of a healthy Solnechny potato variety in the growing process in laboratory conditions in vitro was carried out. The influence of different nutrient medium compositions on plant height, number of leaves/internodes, plant weight and total leaf surface area was studied. It was revealed that nutrient media with BAP addition cause a decrease in all of the above indicators. In addition, nutrient media with this growth regulator lead to the appearance of microtubers on the plants. It has been shown that the inclusion of GA and IAA growth regulators in nutrient media leads to a slight increase in the number of internodes. An increase in the total leaf surface area was noted in the above options. It should be noted that the nutrient medium options with the addition of GA and IAA led to a decrease in the mass and length of the root system of Solnechnyi variety potato plants.

scholarly journals GROWTH AND DEVELOPMENT OF WINTER WHEAT IN THE SPRING-SUMMER PERIOD OF VEGETATION DEPENDING ON CONDITIONS OF MINERAL NUTRITION IN THE RIGHT–BANK OF LISOSTEPPE OF UKRAINE

2020 ◽  
Vol 2 ◽  
pp. 3-8
Author(s):  
Н. M. Hospodarenko ◽  
◽  
O. D. Сherno ◽  
Y. S. Ryabovol ◽  
V. V. Liubych ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Surface Area ◽  
Growth And Development ◽  
Leaf Surface ◽  
Wheat Variety ◽  
Weather Conditions ◽  
Black Soil ◽  
Nitrogen Fertilizers ◽  
Leaf Surface Area ◽  
The Right

The article discusses the features of the growth and development of wheat plants in winter, the precursor of which was soy in the spring-summer growing season on black soil opidzolenii by the Right-Bank of Lisosteppe of Ukraine. The dynamics of productive moisture in the soil, the influence of weather conditions on the duration of the passage of the phases of vegetation, as well as their effect on the growth and development of plants was studied. The effect of various doses and timing of the use of nitrogen fertilizers on biometric indicators, leaf surface area, mass of 100 dry plants and productivity of winter wheat variety Lazurnaya was established. Nitrogen fertilizers provide an increase in the mass of 100 dry plants by 8–16 % with the advantage of their one-time introduction to the tillering phase. A correlation between green mass of plants in different periods (tillering, tubing, heading) of vegetation and yield of winter crops has been established. The correlation between the amount of precipitation was weak (R = 0,2), strong during the exit phase into the tube (R = 0,77), and very strong during the heading phase (R = 0,96). The relationship between plant height and yield at different periods of vegetation was revealed: during the tillering phase, the correlation was significant (R = 0,55), the yield and heading were strong (R = 0,88) has been identified. The leaf surface area varied depending on weather conditions and fertilizer doses. It was greatest in the phase of entering the tube with a single application of nitrogen fertilizers with a dose of 60 kg/ha a.s., and the smallest – in the phase of milk maturity, and on average over the years of research varied from 14,7 to 22,1 thousand m2/ha depending on the intensification of fertilizers. It was found that the yield of winter wheat depended on weather conditions and fertilizers. On average, according to experience, it increased by 30–54 % and depended more on doses of fertilizers than on the timing of their use. It was the largest (6,28 t/ha) at a reliable level when P30K30 + N60 + N60 was added. A high level of reliability of the approximation (R2 = 0,96) between yield and intensification of fertilizer was found.

scholarly journals Photosynthetic parameters of durum winter wheat plantings depending on the variety

2021 ◽  
Vol 1 (98) ◽  
pp. 288-298
Author(s):  
V. V. Liubych ◽  
◽  
I. O. Polianetska
Keyword(s):  
Winter Wheat ◽  
Leaf Area ◽  
Surface Area ◽  
Leaf Surface ◽  
Weather Conditions ◽  
Photosynthetic Parameters ◽  
Wide Range ◽  
Apical Leaf ◽  
Leaf Surface Area ◽  
Number Of Leaves

Under different weather conditions, not all plant varieties successfully adapt to agro-ecosystems. Given that, wheat is the most important food crop It is important to study the possibility of its adaptation to climatic conditions. The choice of plant variety is the first, most important and most difficult stage for wheat producers. Aim. To study the parameters of photosynthetic activity of durum winter wheat plantings depending on the variety. Methods. Laboratory, mathematical and statistical, physical. Results. The article presents the formation of photosynthetic parameters (length, leaf width, number of leaves on one stem, area of one leaf, area of one stem, leaf surface area, apical leaf parameters) of durum winter wheat plantings depending on the variety. The length and width of durum winter wheat leaves varied significantly depending on the variety and stage of plant growth. On the average for three years of researches the number of leaves on one stem in the tillering stage was 4.1–4.5 pieces depending on the variety. In the booting stage, this indicator was the lowest – 3.1–3.3 pieces, and in the earing stage of all varieties was at the level of 4.0 pieces. The number of leaves on the stem almost did not change during the milk stage of grain – 3.9–4.0 pieces. The parameters of the apical leaf also varied significantly with weather conditions. The area of apical leaves in 2013 in the standard and studied varieties was 5.9 and 5.5–7.3 thousand m2/ha, respectively. In the following 2014, the leaf area indicator was higher than in 2013 by 51–60%. The increase in leaf area in durum winter wheat in 2014 is due to the formation of a higher number of stems compared to 2013. Conclusions. Photosynthetic parameters of durum winter wheat plantings have features. The number of leaves on one stem changed the least depending on the year of study, as the variation coefficient was insignificant (V = 1.7–3.6 %). The length and width of durum wheat leaf varied in a wide range - V = 3.7–53.0 %. In the more favourable 2014, the leaf surface area was 40.1–71.0 thousand m2/ha in the earing stage, and in the less favourable – 15.9–29.0 thousand m2/ha in the earing and milk stages of grain depending on the variety. The area of apical leaves varies from 5.7–7.3 to 8.8–14.2 thousand m2/ha depending on the weather conditions of the season

SOOTY MOULD DISEASES OF SOME TREES FROM AURANGABAD DISTRICT, MAHARASHTRA (INDIA)

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
NAVALSINGH J. TODAWAT
Keyword(s):  
Surface Area ◽  
Fungal Pathogens ◽  
Leaf Surface ◽  
Severity Of Disease ◽  
Sooty Mould ◽  
Leaf Surface Area

Sooty mould diseases of Tress from Aurangabad district were surveyed. During the survey of tress, 5 species were found infected by fungal pathogens causing sooty mould diseases. Disease is easily identifiable by the presence of a black, velvety growth covering the leaf surface area. The fungus produces mycelium which is superficial and dark grows on the flowers, leaf, stem and sometime on fruits also. The severity of disease depends on the honeydew secretions by insects. The diseases were found to be caused by 5 species of fungi viz. Capnodium anonae, C. ramosum, Capnodium sp., Meliola bangalorensis and Meliola ranganthii.

INFLUENCE OF GROWTH REGULATORS AND LED IRRADIATORS ON PINE STRAWBERRY ADAPTATION

1970 ◽  
pp. 12-15
Author(s):  
M. G. Markova ◽  
E. N. Somova
Keyword(s):  
Surface Area ◽  
Growth Regulators ◽  
Leaf Surface ◽  
Combined Treatment ◽  
Fragaria X Ananassa ◽  
Leaf Surface Area ◽  
External Conditions ◽  
Light Effects ◽  
Control Version

Work on going through the adaptation stage of rooted micro-stalks comes down to searching for new growth regulators and studying the influence of external conditions, which include, among other things, light effects. The data of 2018-2019 on the effect of growth regulators Siliplant, EcoFus and experimental LED phytoradiators on the adaptation of rooted micro-stalks of garden strawberries (Fragaria x ananassa duch) in vivo are presented. The object of research is rooted micro-stalks of garden strawberries of the Korona variety. It was revealed that, at the adaptation stage of rooted micro-stalks of strawberries, the most effective was the treatment of plants by spraying with Siliplant at a concentration of 1.0 ml/l and the combined treatment with Siliplant and EcoFus at concentrations of 0.5 ml/l: regardless of lighting, the survival rate averaged 99.4 - 99.7%, the leaf surface area increased significantly from 291.85 mm2 to 334.4 mm2. The number of normally developed leaves of strawberry microplants increased significantly after treatment with all preparations from 3.5 to 6.0, 5.8 and 6.5 pcs/plant, and a significant increase in the height of strawberry rosettes was facilitated by treatment with Siliplant and Siliplant together with EcoFus. Regardless of growth regulators, the most effective was the experimental LED phyto-irradiator with a changing spectrum, which contributed to an increase in leaf surface area, height of rosettes and the number of normally developed leaves in strawberry microplants. When illuminated with a flashing phytoradiator, these indicators are lower than in the control version, but not significantly. By the end of the rooting stage, all microplants of garden strawberries corresponded to GOST R 54051-2010.

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