scholarly journals Yield and quality of basil depending on the method of growing seedlings

2021 ◽  
Vol 1 (99) ◽  
pp. 134-146
Author(s):  
I. Kucher ◽  
Keyword(s):  
Cell Volume ◽  
Quality Indicators ◽  
Leaf Surface ◽  
Growth Period ◽  
Seedling Quality ◽  
Biometric Data ◽  
Active Growth ◽  
Open Ground ◽  
A Cell ◽  
Direct Sowing

It is shown and proved then the first and mass seedling emergence 2 days faster due to cell 4х4 and 2,5 × 2,5 cm compere to cell 6 х 6 cm. Growth period from transplanting to budding of plants grown from cells 2,5 × 2,5 cm was 19 days only. It was shortest and 4 days earlier compere to plants from cell 6 × 6 cm or direct sowing. Longest growth period from transplanting to budding of plants was 30 days due to cassettes with cells 2,5 × 2,5 cm. Plants from seedlings longer formed first yield. It was 44 days which was 7 days longer compere with direct sowing. The most active growth of foliage of the Basil plant observed before transplanting to open soil due to cells 6х6 cm. The leaves surface was high. Plants which grown in cassettes with cells 4х4 and 6х6 cm had better biometric data. It was indicated then with increasing of substrate volume seedling quality indicators increased as well. Most active process of leaf surface growth in basil plants took place, which were grown in cassettes with a cell volume of 6 × 6 cm and before planting it in open ground, the leaf surface area was high. Regardless of the time of sowing seeds and planting seedlings in the open ground, the best biometric indicators were plants grown in cassettes with a cell volume of 6×6 cm, that is, with increasing food area per plant and seedling quality indicators increased. The longest peduncle (10,1 cm) had plants of second term of transplanting due to cells 4×4 and 6х6 cm . Higher yield had plants grown from cells 4 × 4 and 6 × 6 cm. Their yield was from 24,6 to 27,2 t/ha. Yield increase according to control was from 0,6 to 2,2 t/ha. Lowest yield shown plants which were grown in cassettes with volume of cells 2,5 × 2,5 cm from 20,9 to 24,3 t/ha.

scholarly journals Yield and quality of cornflowers of real dependence on a way of cultivation of seedling and terms of landing in the conditions of the Right-bank Forest-steppe of Ukraine

2020 ◽  
Vol 1 (97) ◽  
pp. 218-228
Author(s):  
E.I. Ulyanych ◽  
◽  
O.V. Vasilenko ◽  
V.V. Yatsenko ◽  
I.O. Kucher
Keyword(s):  
Cell Volume ◽  
Quality Indicators ◽  
Leaf Surface ◽  
Growth Period ◽  
Seedling Quality ◽  
Forest Steppe ◽  
Biometric Data ◽  
Open Ground ◽  
A Cell ◽  
Direct Sowing

It is shown and proved then the first and mass seedling emergence 2 days faster due to cell 70 and 25 cm3 compere to cell 200 cm3 or direct sowing. Growth period from transplanting to budding of plants grown from cells 25 cm3 was 19 days only. It was shortest and 4 days earlier compere to plants from cell 200 cm3 or direct sowing. Longest growth period from transplanting to budding of plants was 30 days due to cassettes with cells 25 cm3. Plants from seedlings longer formed first yield. It was 44 days which was 7 days longer compere with direct sowing. The most active growth of foliage of the Basil plant observed before transplanting to open soil due to cells 200 cm3. The leaves surface was 242,7 cm 2. Plants which grown in cassettes with cells 70 and 200 cm3 had better biometric data. They were not depending from sowing and transplanting dates. It was indicated then with increasing of substrate volume seedling quality indicators increased as well. Most active process of leaf surface growth in basil plants took place in seedlings, which were grown in cassettes with a cell volume of 200 cm3 and before planting it in open ground, the leaf surface area was 242.7 cm2. Regardless of the time of sowing seeds and planting seedlings in the open ground, the best biometric indicators were plants grown in cassettes with a cell volume of 200 cm3, that is, with increasing food area per plant and seedling quality indicators increased. The longest peduncle (10,1 cm) had plants of second term of transplanting due to cells 70 and 200 cm3. Higher yield had plants grown from cells 70 and 200 cm3. Their yield was from 24,6 to 27,2 t/ha and depend of transplanting terms. Yield increase according to control was from 2,1 to 4,7 t/ha. Lowest yield shown plants which were grown in cassettes with volume of cells 25 cm3 from 23,4 to 25,3 t/ha.

THE STUDY OF CLIMATE EFFECTS ON THE NUT YIELD OF COCONUT USING PARSIMONIOUS MODELS

1998 ◽  
Vol 34 (2) ◽  
pp. 189-206 ◽  
Author(s):  
T. S. G. PEIRIS ◽  
R. O. THATTIL
Keyword(s):  
Sunshine Duration ◽  
Growth Period ◽  
Climate Data ◽  
Active Growth ◽  
Dry Matter Partitioning ◽  
Air Temperatures ◽  
Nut Production ◽  
Parsimonious Models ◽  
June July ◽  
Active Growth Period

The coconut yield is harvested in six picks per year at two-monthly intervals. The yield variation between and within years is very complex and this variability has not yet been explained. The analysis of long-term nut yield and monthly climate data: rainfall (RF), pan evaporation (EV), sunshine duration (SS), wind velocity (WV), minimum and maximum air temperatures (TMIN and TMAX), and relative humidity in forenoons and afternoons (RHAM and RHPM), using multivariate methods enabled the use of the variables TMAX, RHPM and EV as significantly important determinants (parsimonious set of variables) to represent the effects of climate on coconut irrespective of picks. Parsimonious models developed using these three variables explain how the development of bunches during the active growth period responded to climate variables without physiological parameters. The models are desirable where interpretation is concerned. The yields of picks one to six were determined by the climate variability during February, June, July, September, December and February respectively. Based on the models the proper timing of the use of some agronomic practices to enhance the productivity was recommended. A common model was also fitted (R2 = 0.81; p < 0.002) to estimate the annual yield 18 months in advance using EV, RHPM and TMAX. The three variables influence the microclimate around the crown of the palm for utilizing solar radiation in dry matter partitioning and thereby nut production. The method used to screen climatic variables so as to develop parsimonious crop–weather models using multivariate and univariate techniques can be used for other tree crops.

scholarly journals Long-term standardized forest phenology in Sweden: a climate change indicator

2019 ◽  
Author(s):  
Ola Langvall ◽  
Mikaell Ottosson Löfvenius
Keyword(s):  
Climate Change ◽  
Quantitative Methods ◽  
Food Resource ◽  
Growth Period ◽  
Phase Changes ◽  
Gradual Change ◽  
Active Growth ◽  
Statistical Precision ◽  
Active Growth Period

Abstract Because climate change alters patterns of vegetative growth, long-term phenological measurements and observations can provide important data for analyzing its impact. Phenological assessments are usually made as records of calendar dates when specific phase changes occur. Such assessments have benefits and are used in Citizen Science monitoring. However, these kinds of data often have low statistical precision when describing gradual changes. Frequent monitoring of the phenological traits of forest trees and berries as they undergo gradual change is needed to acquire good temporal resolution of transitions relative to other factors, such as susceptibility to frosts, insects, and fungi, and the use of berries as a food resource. Intensive weekly monitoring of the growth of apical and branch buds and the elongation of shoots and leaves on four tree species, and the abundance of flowers and berries of bilberry and lingonberry, has been performed in Sweden since 2006. Here, we present quantitative methods for interpolating such data, which detail the gradual changes between assessments in order to describe average rates of development and amount of interannual variation. Our analysis has shown the active growth period of trees to differ with latitude. We also observed a change in the timing of the maximum numbers of ripening berries and their successive decline. Data from tree phenology assessments can be used to recommend best forestry practice and to model tree growth, while berry data can be used to estimate when food resources for animals are most available.

Relationship between sodium transport and intracellular ATP in isolated perfused rabbit proximal convoluted tubule

1991 ◽  
Vol 261 (4) ◽  
pp. F634-F639 ◽  
Author(s):  
J. S. Beck ◽  
S. Breton ◽  
H. Mairbaurl ◽  
R. Laprade ◽  
G. Giebisch
Keyword(s):  
Potassium Channels ◽  
Cell Volume ◽  
Intracellular Ph ◽  
Sodium Transport ◽  
Sodium Pump ◽  
Basolateral Membrane ◽  
Potassium Conductance ◽  
Transference Number ◽  
Proximal Convoluted Tubule ◽  
A Cell

The effect of alterations in sodium transport on cell ATP content and pH in the isolated perfused proximal convoluted tubule (PCT) of the rabbit was examined. Stimulating sodium transport by the addition of luminal glucose and alanine decreased cell ATP from 4.44 +/- 0.93 to 2.69 +/- 0.62 mM (n = 4), increased intracellular pH by 0.13 +/- 0.02 (n = 7), and increased cell volume by 0.10 +/- 0.02 nl/mm (n = 4). Blocking the sodium pump with 10(-4) M strophanthidin in tubules in which sodium transport had been stimulated increased cell ATP from 2.04 +/- 0.24 to 2.42 +/- 0.32 mM (n = 6). In parallel experiments the same dose of strophanthidin depolarized the basolateral membrane from -52.6 +/- 1.9 to -6.4 +/- 1.6 mV, depolarized the transepithelial potential from -3.2 +/- 0.3 to -0.1 +/- 0.1 mV, and reduced the basolateral membrane potassium transference number from 0.47 to 0.26 indicating a reduction in basolateral potassium conductance. Since strophanthidin caused a cell alkalinization of 0.15 +/- 0.03, this latter effect cannot be due to changes of intracellular pH. Strophanthidin caused no change in cell volume over the period studied, suggesting that stretch-activated potassium channels are not involved either. Instead, potassium conductance inhibition may be the result of the closure of ATP-sensitive potassium channels. These same channels might thus be partly responsible for the increase in potassium conductance commonly observed during stimulation of sodium transport.

A conductivity detector for liquid chromatography with a cell volume of 0.1 μl

1983 ◽  
Vol 48 (4) ◽  
pp. 1129-1136 ◽  
Author(s):  
Danuše Kouřilová ◽  
Karel Šlais ◽  
Miloš Krejčí
Keyword(s):  
Liquid Chromatography ◽  
Organic Acids ◽  
Cell Volume ◽  
Mobile Phase ◽  
Linear Range ◽  
Phase System ◽  
Reverse Phase ◽  
Micropacked Columns ◽  
A Cell ◽  
Inner Diameter

A conductivity detector with a cell volume of 0.1 μl has been devised to fit glass micropacked columns with an inner diameter of 0.5 mm. D.c. current was used in the measurements, the voltage applied to the electrodes was 30 V. Organic acids separated in a reverse-phase system were detected; the minimum detectable concentrations were 6 . 10-7 - 1 . 10-5 mol l-1 according to the acid concerned and the composition of the mobile phase. The linear range of the detector is 400.

Nitrogenase activity associated with Zostera marina from a North Carolina estuary

1982 ◽  
Vol 28 (4) ◽  
pp. 448-451 ◽  
Author(s):  
Garriet W. Smith ◽  
Steven S. Hayasaka
Keyword(s):  
North Carolina ◽  
Zostera Marina ◽  
Nitrogenase Activity ◽  
Growth Period ◽  
Winter Period ◽  
Late Winter ◽  
Active Growth ◽  
North Carolina Estuary ◽  
Active Growth Period

Nitrogenase activity (at in situ temperatures) associated with Zostera marina reflected the active growth periods of this plant in North Carolina coastal waters. During the plants most active growth period (late winter – spring) nitrogenase activity was primarily rhizospheric (8.47 μmol nitrogen fixed∙m−2∙day−1), while during its fall – early winter period it was primarily phyllospheric (8.03 μmol nitrogen fixed∙m−2∙day−1). No nitrogenase activity was detected during the warmer summer months when the plant is dormant. Phyllospheric nitrogenase activity (possibly the result of epiphytic heterocystic blue-green bacteria) was highest when plants were incubated aerobically in the presence of light.

scholarly journals Dynamic-ultrastructural cell volume (3D) correlative microscopy facilitated by intracellular fluorescent nanodiamonds as multi-modal probes

2019 ◽  
Author(s):  
Neeraj Prabhakar ◽  
Ilya Belevich ◽  
Markus Peurla ◽  
Xavier Heiligenstein ◽  
Huan-Cheng Chang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Cell Volume ◽  
Light And Electron Microscopy ◽  
Three Dimensional ◽  
Correlative Microscopy ◽  
Straightforward Method ◽  
Functional Aspects ◽  
A Cell ◽  
Block Face ◽  
Fluorescent Nanodiamonds

ABSTRACTThree-dimensional correlative light and electron microscopy (3D CLEM) are attaining popularity as a potential technique to explore the functional aspects of a cell together with high-resolution ultrastructural details across the cell volume. In order to perform such a 3D CLEM experiment, there is an imperative requirement for multi-modal probes that are both fluorescent and electron-dense. These multi-modal probes will serve as landmarks in matching up the large full cell volume datasets acquired by different imaging modalities. Fluorescent nanodiamonds (FNDs) are a unique nanosized, fluorescent, and electron-dense material from the nanocarbon family. We hereby propose a novel and straightforward method for executing 3D CLEM using FNDs as multi-modal landmarks. We demonstrate that FNDs is biocompatible and easily identified both in living cell fluorescence imaging and in serial block-face scanning electron microscopy (SB-EM). We illustrate the 3D CLEM method by registering multi-modal datasets.

scholarly journals Transcriptional responses ofEscherichia coliduring recovery from inorganic or organic mercury exposure

2017 ◽  
Author(s):  
Stephen LaVoie ◽  
Anne O. Summers
Keyword(s):  
Gene Expression ◽  
Chemical Properties ◽  
Normal Growth ◽  
Acute Exposure ◽  
Transcriptional Responses ◽  
Active Growth ◽  
E Coli ◽  
Longitudinal Effects ◽  
A Cell ◽  
Response Systems

ABSTRACTBackgroundThe protean chemical properties of mercury have long made it attractive for diverse applications, but its toxicity requires great care in its use, disposal, and recycling. Mercury occurs in multiple chemical forms, and the molecular basis for the distinct toxicity of its various forms is only partly understood. Global transcriptomics applied over time can reveal how a cell recognizes a toxicant and what cellular subsystems it marshals to repair and recover from the damage. The longitudinal effects on the transcriptome of exponential phaseE. coliwere compared during sub-acute exposure to mercuric chloride (HgCl2) or to phenylmercuric acetate (PMA) using RNA-Seq.ResultsDifferential gene expression revealed common and distinct responses to the mercurials throughout recovery. Cultures exhibited growth stasis immediately after each mercurial exposure but returned to normal growth more quickly after PMA exposure than after HgCl2exposure. Correspondingly, PMA rapidly elicited up-regulation of a large number of genes which continued for 30 min, whereas fewer genes were up-regulated early after HgCl2exposure only some of which overlapped with PMA up-regulated genes. By 60 min gene expression in PMA-exposed cells was almost indistinguishable from unexposed cells, but HgCl2exposed cells still had many differentially expressed genes. Relative expression of energy production and most metabolite uptake pathways declined with both compounds, but nearly all stress response systems were up-regulated by one or the other mercurial during recovery.ConclusionsSub-acute exposure influenced expression of ~45% of all genes with many distinct responses for each compound, reflecting differential biochemical damage by each mercurial and the corresponding resources available for repair. This study is the first global, high-resolution view of the transcriptional responses to any common toxicant in a prokaryotic model system from exposure to recovery of active growth. The responses provoked by these two mercurials in this model bacterium also provide insights about how higher organisms may respond to these ubiquitous metal toxicants.

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