scholarly journals Features of forming plants hybrids of tomato indeterminant type in spring greenhouses in southern Russia

2021 ◽  
pp. 16-20
Author(s):  
В.В. Огнев ◽  
Т.В. Чернова ◽  
Е.И. Корсунов
Keyword(s):  
Soil Solution ◽  
Growth And Development ◽  
Leaf Surface ◽  
Soil Culture ◽  
High Ph ◽  
Average Mass ◽  
Rostov Region ◽  
Breeding Center ◽  
Culture Substrate ◽  
Southern Russia

Совершенствование технологий выращивания томата в весенних теплицах сопровождается изменением сортимента культуры. Все большее распространение получают гибриды индетерминантного типа. Основной целью исследований было изучение различных способов формировки растений гибридов томата с индетерминантным типом роста в весенних теплицах. Исследования проводили в 2018-2020 годах в Селекционно-семеноводческом центре «Ростовский» компании «Поиск», расположенном в Ростовской области. Материалом исследований служили гибриды томата с индетерминантным типом роста собственной селекции F1Армада, F1 Пегас, F1 Огневский и F1 Розовый фрегат. Опыты проводили в необогреваемых весенних теплицах ангарного типа с поликарбонатным светопрозрачным покрытием в грунтовой культуре. Почвогрунт – чернозем обыкновенный. Содержание основных элементов питания – высокое, рН почвенного раствора 7,0-7,2. Схема посадки растений 70×30 см, по 10 растений каждого варианта в четырехкратной повторности. Рассаду выращивали в разводочной теплице с пикировкой в пластиковые контейнеры. Возраст рассады перед высадкой – 55 дней. Рассаду высаживали в последней декаде апреля. Использовали общепринятые приемы ухода за растениями. Для полива и подкормок применяли капельную систему с фертигацией. Урожай убирали в несколько приемов по мере созревания плодов. Исследования показали, что формировка растений влияет на высоту растений и их облиственность. С увеличением количества оставленных побегов высота растений снижается, а площадь листовой поверхности увеличивается. Увеличение количества оставленных побегов приводит к возрастанию общего количества кистей на растении, но количество плодов, сформировавшихся в кисти, снижается, как и средняя масса плода на растении. Наиболее высокая продуктивность растений и их урожайность с единицы площади достигается при формировке в два стебля. И это характерно для всех гибридов вне зависимости от индивидуальных особенностей роста и развития. Improving the technology of growing tomatoes in spring greenhouses is accompanied by a change in the variety of crop. Hybrids of the indeterminant type are becoming more common. The main purpose of the research was to study different ways of forming plants of tomato hybrids with an indeterminant type of growth in spring greenhouses. The research was carried out in 2018-2020 at the Breeding Center in the Rostov region. The material for the research was tomato hybrids with an indeterminant type of growth of its own breeding F1 Armada, F1Pegas, F1 Ognevskiy and F1 Rozovy Fregat. Experiments were conducted in unheated spring greenhouses of hangar type with polycarbonate translucent coating in the soil culture. Substrate is ordinary black earth. The contents of the main elements of food - high, pH soil solution 7.0-7.2. Plant planting scheme 70×30 cm, 10 plants of each variant in four-fold. A fertigation drip system was used for watering and feeding. Harvest was carried out in several receptions as the fruit matured. Studies have shown that the formation of plants affects the height of plants and their obliging. As the number of shoots left, the height of the plants decreases and the area of the leaf surface increases. The increase in the number of abandoned shoots leads to an increase in the total number of brushes on the plant, but the number of fruits formed in the brush, decreases, as well as the average mass of the fruit on the plant. The highest productivity of plants and their yield from a unit of area is achieved when formed in 2 stems. And this is typical for all hybrids, regardless of individual features of growth and development.

scholarly journals Winter mortality, development and reproduction in a field population of Myzus persicae (Sulzer) (Hemiptera: Aphididae) in England

1984 ◽  
Vol 74 (4) ◽  
pp. 633-640 ◽  
Author(s):  
R. Harrington ◽  
Cheng Xia-Nian
Keyword(s):  
Myzus Persicae ◽  
Growth And Development ◽  
Population Change ◽  
Leaf Surface ◽  
Winter Survival ◽  
Winter Mortality ◽  
Biological Factors ◽  
Surface Wetness ◽  
South Eastern ◽  
The Relationship

AbstractPopulation change in Myzus persicae (Sulz.) overwintering on spring cabbage in south-eastern England was studied in relation to meteorological and biological factors. Leaf surface wetness and temperature were correlated significantly with rate of population change, but rainfall and wind were not. Growth and development continued slowly throughout the winter, and the relationship with temperature is shown. Hymenopterous parasites, the fungus Entomophthora and predatory spiders did not affect winter survival.

scholarly journals PHYTOMELIORATIVE ROLE OF SHRUB BELT IN ROADSIDE PLANTATIONS

2021 ◽  
Vol 7 (73) (2) ◽  
pp. 80-86
Author(s):  
N. V. Ivanisova ◽  
L. V. Kurinskaya ◽  
S. I. Kolesnikov ◽  
N. M. Davydenko
Keyword(s):  
Negative Impact ◽  
Climatic Factors ◽  
Steppe Zone ◽  
Dense Structure ◽  
Ulmus Parvifolia ◽  
Rostov Region ◽  
Southern Russia ◽  
Cotinus Coggygria ◽  
Further Development

Along the federal roads of the Rostov region, Krasnodar Territory and the Stavropol Territory, it is increasingly possible to find clean plantations consisting of one or two tree species, with a completely destroyed bush belt. In 62 % of the plots studied, the shrub belt is represented by species of scumpia (Cotinus coggygria, 17 %), terna (Prunus spinosa, 9 %), elm (Ulmus parvifolia, 5 %), maple (Acer tataricum, 3 %), that is, resistant to anthropogenic and climatic factors steppe The bush belt in protective roadside strips plays a significant role in the accumulation of soil moisture (by 6.3 %), humus (by 2.4 %), in reducing the noise load (by 25 dB). Ancestral and overband shrubs make it possible to create a dense structure of forest strips, which fully performs protective functions both from drifts of the highway bed with snow, and to reduce the negative impact of vehicles on adjacent landscapes. The study of the phytomeliorative role of the shrub belt in existing roadside plantations is a relevant area of research for the further development of recommendations for the creation and maintenance of protective roadside plantings in the steppe zone of southern Russia.

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 Impact of mineral fertilizers on soybean growth, development and productivity on meadow-chernozem soils of Rostov region

2021 ◽  
Author(s):  
R. Ye. Yurkova ◽  
◽  
L. M. Dokuchayeva ◽  
Keyword(s):  
Surface Area ◽  
Field Experiments ◽  
Leaf Surface ◽  
Mineral Fertilizers ◽  
Flowering Phase ◽  
Rostov Region ◽  
Chernozem Soils ◽  
Leaf Surface Area ◽  
Growth Development ◽  
Different Doses

Purpose: to reveal the effect of different doses of mineral fertilizers (MF) on the growth, development and productivity of soybeans on meadow-chernozem soils of Rostov region. Materials and methods. The studies were carried out on meadow-chernozem soils of Oktyabrsky district Rostov region in 2019–2020. Observations of the effect of different doses of MF on the growth, development of plants, yield records, statistical processing of the results were carried out according to generally accepted methods of conducting field experiments. Results. It was found that, on average for 2 years, the greatest plant growth was observed in the variant with the calculated MF dose for the planned yield of 5.0 t/ha. The height of plants in this variant in the branching phase averaged 24.8 cm for 2 years, in the flowering phase – 54.7 cm, and in the phase of bean filling – 117.6 cm. This is, respectively, 23, 21 and 13 % higher than the control. The largest increases in leaf surface area in this variant were revealed: on average for 2 years, they amounted to 13% in the phases of branching and filling of beans and 18 % in the flowering phase. At the same time, in the variant with the MF dose for the yield of 4.0 t/ha, the increments to the control were respectively equal to 9, 16, 13 %, and in the variant with the MF for the yield of 3.5 t/ha – 6, 12, 8 %, respectively. Similar changes were revealed in the accumulation of dry aboveground biomass. Conclusions. The greatest impact on the height of soybean plants was exerted by the application of MF with a dose calculated for the planned yield of 5.0 t/ha. On average, for 2 years, the height of plants in this variant was 117.6 cm in the phase of filling the beans, which is 13 % higher than in the variant without fertilizers. The same tendency can be traced when determining the leaf surface area and accumulation of dry biomass according to the options in the observation phases. Thus, the best conditions for the yield formation were formed in the variant with the calculated dose for the planned yield of 5.0 t/ha. As a result, on average for 2 years, the soybean yield in this variant is 109 % higher than the control.

scholarly journals Cultivation and Propagation of Iris laevigata Fisch., an Endangered Ethno-medicinal Plant of Imphal Valley Manipur, India

2021 ◽  
Vol 13 (5) ◽  
pp. 153
Author(s):  
S. Sanjay Singh ◽  
Rocky Thokchom ◽  
Jenita Thokchom ◽  
Soumitra Sankar Das ◽  
Arvind S. Dhabe ◽  
...  
Keyword(s):  
Growth And Development ◽  
Leaf Surface ◽  
Growth Parameters ◽  
Block Design ◽  
Strong Positive Correlation ◽  
Eastern India ◽  
Randomized Block Design ◽  
North Eastern ◽  
Leaf Surface Area ◽  
Conservation Method

Iris laevigata Fisch., is restricted geographically in Manipur, north eastern India. An experiment was planned with Factorial Randomized Block Design during 2018 to 2020 (3 seasons) in the study plots of ICAR Research Complex for NEH Region, Manipur Centre, Lamphelpat. The study encompasses on the growth and development of I. laevigata seedlings collected from Ipa Thoukok Complex: influenced by spacing, trimming and correlations amongst the growth parameters, so as to validate the most favourable conservation method for this endangered plant. Among the treatments, T6 = S2T3 (45 cm × trimming 40 DAT) was found the best treatment. T9 = S3T3 (60 cm × trimming 40 DAT) was second, T3 = S1T3 (30 cm × trimming 40 DAT) was the third and lowest was found in case of T1 = S1T1 (30 cm × 0 trimming, i.e., without trimming). Strong positive correlation between leaf surface area and plant height on the growth and development was found to be effective among other correlations.

Germination, Growth, and Development of Spurred Anoda

Weed Science ◽  
1976 ◽  
Vol 24 (6) ◽  
pp. 574-578 ◽  
Author(s):  
Francisco Solano ◽  
J. W. Schrader ◽  
H. D. Coble
Keyword(s):  
Growth And Development ◽  
Leaf Surface ◽  
Natural Conditions ◽  
Shoot Height ◽  
Hard Seed ◽  
Leaf Surface Area ◽  
Concentrated Sulfuric Acid ◽  
Hard Seed Coat ◽  
Anoda Cristata ◽  
Control Tool

Spurred anoda [Anoda cristata(L.) Schlect.] seed germination averaged 0.5 to 3.0% for seeds buried in the field for up to 20 months under natural conditions. These same seeds averaged over 76% germination after scarification with concentrated sulfuric acid, indicating hard seed coat involvement in seed dormancy. Germination was unaffected by light variables but increased as temperature increased. Germination of scarified seed increased from 50% to 85% as temperature was increased from 18 C to 30 C. Spurred anoda developed more slowly than did cotton (Gossypium hirsutumL. ‘Coker 310′) for the first 45 days. After that spurred anoda grew more rapidly until by 60 days after emergence, the weed was larger than cotton as measured by shoot height and total leaf surface area. This difference in development between cotton and spurred anoda indicates postemergence directed sprays of herbicides might be useful as a control tool.

scholarly journals PHOSPHORUS MOVEMENT IN SOME CALCAREOUS AND NONCALCAREOUS MANITOBA SOILS

1969 ◽  
Vol 49 (3) ◽  
pp. 305-312 ◽  
Author(s):  
E. T. Lewis ◽  
G. J. Racz
Keyword(s):  
Soil Solution ◽  
Calcareous Soils ◽  
Diammonium Phosphate ◽  
Application Site ◽  
Monoammonium Phosphate ◽  
High Ph ◽  
Soil Solutions ◽  
Calcium And Magnesium ◽  
Rate Of Movement

The extent of movement of phosphorus from the application site of P-32 labelled monoammonium phosphate and diammonium phosphate pellets was investigated. The rate of movement of phosphorus from a monoammonium phosphate pellet was also studied. The extent of phosphorus movement from a monoamnionium phosphate pellet was greater than that from a diammonium phosphate pellet. This observation was more noticeable in the calcareous soils than in the noncalcareous soils. The extent of phosphorus movement was greater in noncalcareous soils than in calcareous soils for both sources of phosphorus when added as a pellet. The rate of movement of phosphorus was also more rapid in noncalcareous soils than in calcareous soils.It is most likely that the high pH and large amounts of calcium and magnesium found in the soil solutions of the calcareous soils resulted in a rapid precipitation of the added phosphorus very close to the pellet site. Thus, the rate and extent of phosphorus movement in the calcareous soils was restricted more than in the noncalcareous soils, which had a lower pH and contained smaller amounts of calcium and magnesium in the soil solution.

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