scholarly journals Genetic Mapping of the Tomato Quality Traits Brix and Blossom-end Rot Under Supplemental LED and HPS Lighting Conditions

2021 ◽  
Author(s):  
Aina Prinzenberg ◽  
Hanneke van der Schoot ◽  
Richard GF Visser ◽  
Leo Marcelis ◽  
Ep Heuvelink ◽  
...  
Keyword(s):  
Genetic Locus ◽  
Chromosome 2 ◽  
Light Conditions ◽  
Chromosome 11 ◽  
Greenhouse Production ◽  
Lighting Conditions ◽  
Blossom End Rot ◽  
Supplemental Lighting ◽  
Brix Value ◽  
The Impact

Abstract LED lighting has emerged as alternative to the current HPS standard in greenhouse production. However little is known about the impact on fruit quality under the different light spectra. We grew a biparental tomato RIL population between September 2019 and January 2020 under two commercial greenhouse supplemental lighting conditions, i.e. HPS, and 95% red/ 5% blue- LED, of about 220 µmol m− 2 s− 1 at maximum canopy height for 16h per day. Differences in Brix and blossom-end rot (BER) between the two light conditions were observed and we studied the genetic influences on those traits, separating genetics located on chromosomes from genetics located in plastids. The Brix value was on average 11% lower under LED than under HPS supplemental lighting. A LED-light specific QTL for Brix was identified on chromosome 6. This QTL can be of interest for breeding for tomato varieties cultivated under LED supplemental lighting. A Brix-QTL on chromosome 2 was found for both light conditions. In our study fewer plants developed BER under LED supplemental lighting than under HPS. We identified a novel genetic locus on chromosome 11 for the incidence of BER that lead to a difference in about 20% of fruits with BER. This genetic component was independent of the light.

scholarly journals Genetic mapping of the tomato quality traits brix and blossom-end rot under supplemental LED and HPS lighting conditions

Euphytica ◽  
2021 ◽  
Vol 217 (12) ◽  
Author(s):  
Aina E. Prinzenberg ◽  
Hanneke van der Schoot ◽  
Richard G. F. Visser ◽  
Leo F. M. Marcelis ◽  
Ep Heuvelink ◽  
...  
Keyword(s):  
Genetic Locus ◽  
Chromosome 2 ◽  
Light Conditions ◽  
Chromosome 11 ◽  
Greenhouse Production ◽  
Lighting Conditions ◽  
Blossom End Rot ◽  
Supplemental Lighting ◽  
Brix Value ◽  
The Impact

AbstractLED lighting has emerged as alternative to the current HPS standard in greenhouse production. However little is known about the impact on fruit quality under the different light spectra. We grew a biparental tomato RIL population between September 2019 and January 2020 under two commercial greenhouse supplemental lighting conditions, i.e. HPS, and 95% red/5% blue- LED, of about 220 µmol m−2 s−1 at maximum canopy height for 16 h per day. Differences in Brix and blossom-end rot (BER) between the two light conditions were observed and we studied the genetic influences on those traits, separating genetics located on chromosomes from genetics located in plastids. The Brix value was on average 11% lower under LED than under HPS supplemental lighting. A LED-light specific QTL for Brix was identified on chromosome 6. This QTL can be of interest for breeding for tomato varieties cultivated under LED supplemental lighting. A Brix-QTL on chromosome 2 was found for both light conditions. In our study fewer plants developed BER under LED supplemental lighting than under HPS. We identified a novel genetic locus on chromosome 11 for the incidence of BER that lead to a difference in about 20% of fruits with BER. This genetic component was independent of the light.

scholarly journals Morphological features of Hylotelephium triphillum (Haw.) Holub (Crassulaceae DC.) under different light conditions when introduced into the steppe zone

2016 ◽  
Vol 5 (2) ◽  
pp. 47-51
Author(s):  
Lidiya Vasilyevna Privalko
Keyword(s):  
Fruit Set ◽  
Steppe Zone ◽  
Botanical Garden ◽  
Light Conditions ◽  
Biometric Data ◽  
Habitat Features ◽  
Lighting Conditions ◽  
Air Temperatures ◽  
Natural Flora ◽  
The Impact

In recent decades floral devices in a natural style has been becoming more common in gardening. In this connection there was a need for the introduction and study of the natural flora of plants in order to attract them to simulate the decorative and resistant plants. The article presents the results of studies of the effect of different light conditions on the habitat features and decorative biomorphological Hylotelephium triphyllum (Haw.) Holub (Crassulaceae DC.) when introduced in SE Donetsk Botanical Garden. This species is found naturally in the flora of Donbass, a decorative, but, according to the results of our analysis, is rarely used in green construction. Bioecological certification of this type has been done. It has been determined that the impact of site lighting conditions on the growth and development of H. triphyllum expressed in significantly smaller numbers of vegetative and generative shoots in the shaded areas. However, since the diameter of the plants does not change, more thickened planting in these areas is not recommended. The author found the dependence of the variation of the biometric data on the lighting conditions. In the study of seasonal dynamics of H. triphyllum the author revealed that the development of above-ground organs of his passes with a positive amount of average daily air temperatures. The growing season lasts an average of 225 days. Start of spring regrowth is observed in the second half of March - early April, flowering - in August - September, fruits - in September - October. Vegetation stops when temperature goes below zero. Illumination of this type of habitat affect the time of vegetation beginning, budding, flowering, fruit set and fruit-bearing. On the shaded areas due to the later start of budding and flowering the most decorative period of H. triphyllum is shorter by an average of 10 days. This type is recommended for creation of group planting, stony hills, dry streams, rock gardens, rockeries, mixborders, curbs, ornamental compositions in the coastal zone of ornamental ponds and fountains in the steppe zone in areas with different light conditions, taking into account the above factors.

Violation of the conditions of the insolution regime in trends of modern construction

2020 ◽  
pp. 80-85
Author(s):  
Myroslava Schevchuk ◽  
Svitlana Verkalets ◽  
Serhiy Schevchuk ◽  
Mykola Danylyshyn
Keyword(s):  
Residential Buildings ◽  
Light Conditions ◽  
Regulatory Requirements ◽  
Natural Health ◽  
Natural Lighting ◽  
Lighting Conditions ◽  
Building Insulation ◽  
Holding Back ◽  
The Impact

Purpose. The purpose of the work is analysis of violations of natural lighting conditions (insolation) in residential buildings, because in the modern conditions of construction the role of direct sunlight as a natural health factor has increased significantly, multi-storied buildings in cities are becoming increasingly detached from natural conditions. Method. The methodology is based on a comprehensive and objective analysis of the SSTC-R B normative document R.2.2-27: 2010 “Guidance on the Calculation of Civilian Object Insolation”. Results. It has been investigated during the process of analysis that the regulation and calculation of insolation is the most acute economic and social-legal problem. With the transition of land usage and construction to the market basis, building insulation rates have become a major factor in holding back investors, landlords and tenants from seeking to redevelop urban development in order to maximize profits. Scientific novelty. Imperfect normalization was found under the current conditions in the course of the research, which can lead to serious errors in the design and evaluation of the insulation regime of the apartment and the house as a whole. The maximum shade mask of a new home shall correspond to the maximum possible height of the projected house or to the combination of the maximum heights of each individual section at which the insolation regime in the premises of the existing house or in the surrounding area shall meet the regulatory requirements or shall not deteriorate during the normalized period of insolation. If the insolation is interrupted more than once, then for the estimated duration of the insolation, the sum of the duration of the two largest insolation periods should be taken. Practical meaning. The results of the study may be useful in further studies of violation of natural light conditions, as well as the impact of residential development on insolation processes.

Development of REDCAHOR—a Vegetable Research and Development Network in Central America

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 531b-531
Author(s):  
J. Nienhuis
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Central America ◽  
Organic Production ◽  
Vegetable Production ◽  
Greenhouse Production ◽  
Short Course ◽  
Development Network ◽  
Breeding And Genetics ◽  
The Impact

REDCAHOR is the Spanish acronym for “Central American Vegetable Network.” Vegetables have traditionally been an important source of nutrients and vitamins in the diet in Central America. Vegetable production in this region is now changing as local consumers are demanding increased diversity and quality and international markets are expanding with “non-traditional” vegetable exports. The present restraints to expanded research and production of vegetables in the region include i) need for cultivars with increased insect and disease resistance, ii) poor and excessive use of pesticides, and iii) inadequate postharvest technology. In addition, there are few vegetable researchers in the region and response to their activities have not been coordinated. The goal of REDCAHOR is to develop a regional network of national institutions that can prioritize agendas and cooperate to maximize the impact of available resources. Establishment of a system of regional trials and cooperative regional programs in integrated pest management and plant breeding are currently under development. A series of regional workshops are planned, including integrated pest management, maintenance and use of genetic resources, organic production, and greenhouse production. In addition, REDCAHOR, in collaboration with the Escuela Agricola Panamerica in Honduras, will offer regional short-course training in vegetable breeding and genetics as well as vegetable production and management, including integrated pest management.

scholarly journals Identification of traffic accident risk-prone areas under low-light conditions

2015 ◽  
Vol 15 (9) ◽  
pp. 2059-2068 ◽  
Author(s):  
K. Ivan ◽  
I. Haidu ◽  
J. Benedek ◽  
S. M. Ciobanu
Keyword(s):  
Traffic Accident ◽  
Traffic Accidents ◽  
Pearson Correlation ◽  
Injury Rate ◽  
Spatial Relation ◽  
Accident Risk ◽  
Light Conditions ◽  
Low Light ◽  
The Impact ◽  
The City

Abstract. Besides other non-behavioural factors, low-light conditions significantly influence the frequency of traffic accidents in an urban environment. This paper intends to identify the impact of low-light conditions on traffic accidents in the city of Cluj-Napoca, Romania. The dependence degree between light and the number of traffic accidents was analysed using the Pearson correlation, and the relation between the spatial distribution of traffic accidents and the light conditions was determined by the frequency ratio model. The vulnerable areas within the city were identified based on the calculation of the injury rate for the 0.5 km2 areas uniformly distributed within the study area. The results show a strong linear correlation between the low-light conditions and the number of traffic accidents in terms of three seasonal variations and a high probability of traffic accident occurrence under the above-mentioned conditions at the city entrances/exits, which represent vulnerable areas within the study area. Knowing the linear dependence and the spatial relation between the low light and the number of traffic accidents, as well as the consequences induced by their occurrence, enabled us to identify the areas of high traffic accident risk in Cluj-Napoca.

scholarly journals Clinics and genetic background of hereditary gingival fibromatosis

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Karolina Strzelec ◽  
Agata Dziedzic ◽  
Katarzyna Łazarz-Bartyzel ◽  
Aleksander M. Grabiec ◽  
Ewa Gutmajster ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Rare Condition ◽  
Enrichment Score ◽  
Chromosome 2 ◽  
Chromosome 11 ◽  
Genetic Studies ◽  
Pathogenic Variants ◽  
Gingival Fibromatosis ◽  
Encoding Genes ◽  
Clinical Overview

Abstract Background Hereditary gingival fibromatosis (HGF) is a rare condition characterized by slowly progressive overgrowth of the gingiva. The severity of overgrowth may differ from mild causing phonetic and masticatory issues, to severe resulting in diastemas or malposition of teeth. Both, autosomal-dominant and autosomal-recessive forms of HGF are described. The aim of this review is a clinical overview, as well as a summary and discussion of the involvement of candidate chromosomal regions, pathogenic variants of genes, and candidate genes in the pathogenesis of HGF. The loci related to non-syndromic HGF have been identified on chromosome 2 (GINGF, GINGF3), chromosome 5 (GINGF2), chromosome 11 (GINGF4), and 4 (GINGF5). Of these loci, pathogenic variants of the SOS-1 and REST genes inducing HGF have been identified in the GINGF and the GINGF5, respectively. Furthermore, among the top 10 clusters of genes ranked by enrichment score, ATP binding, and fibronectin encoding genes were proposed as related to HGF. Conclusion The analysis of clinical reports as well as translational genetic studies published since the late’90s indicate the clinical and genetic heterogeneity of non-syndromic HGF and point out the importance of genetic studies and bioinformatics of more numerous unrelated families to identify novel pathogenic variants potentially inducing HGF. This strategy will help to unravel the molecular  mechanisms as well as uncover specific targets for novel and less invasive therapies of this rare, orphan condition.

scholarly journals The impact of transition type on chromatic adaptation under dual lighting conditions

2020 ◽  
Vol 2020 (28) ◽  
pp. 36-41
Author(s):  
Shining Ma ◽  
Peter Hanselaer ◽  
Kees Teunissen ◽  
Kevin A.G. Smet
Keyword(s):  
Chromatic Adaptation ◽  
Spatial Complexity ◽  
Lighting Conditions ◽  
Adaptation State ◽  
Cat Model ◽  
The Impact ◽  
Transition Type

Over the years, many CATs (chromatic adaptation transform), typically based on the von Kries coefficient rule, have been developed to predict the corresponding colors under different illuminants. However, these CATs were derived for uniform stimuli surrounded by a uniform adapting field. To investigate the adaptation state under spatially complex illumination, an achromatic matching experiment was conducted under dual lighting conditions with three color pairs and two transition types. It has been found that the transition type has an impact on both the equivalent chromaticity and degree of adaptation. These results can help build a comprehensive von Kries based CAT model, with considering the spatial complexity of illumination.

Differential activity of a tissue-specific extinguisher locus in hepatic and nonhepatic cells

1989 ◽  
Vol 9 (5) ◽  
pp. 1813-1822
Author(s):  
H Gourdeau ◽  
T C Peterson ◽  
R E Fournier
Keyword(s):  
Mouse Chromosome ◽  
Phosphoenolpyruvate Carboxykinase ◽  
Genetic Locus ◽  
Cell Types ◽  
Tyrosine Aminotransferase ◽  
Hepatoma Cells ◽  
Chromosome 11 ◽  
Tissue Specific ◽  
Primary Mouse ◽  
Mouse Chromosome 11

Tissue-specific extinguisher 1 (Tse-1) is a genetic locus on mouse chromosome 11 that can repress expression of several liver genes in trans. This locus is clearly active in fibroblasts, as hepatoma cells retaining fibroblast chromosome 11 are extinguished for both tyrosine aminotransferase and phosphoenolpyruvate carboxykinase gene expression. To assess the activity of Tse-1 in other tissues, we transferred mouse chromosome 11 from several different cell types into rat hepatoma recipients. Tse-1 was active in nonhepatic cell lines derived from each primary germ layer, but Tse-1 activity was not apparent in hybrids between hepatoma cells and primary mouse hepatocytes. These differences in the genetic activity of murine Tse-1 were apparently heritable in cis.

scholarly journals Comparison of Denoising Algorithms for Demosacing Low Lighting Images Using CFA 2.0

2020 ◽  
Vol 11 (5) ◽  
pp. 37-60
Author(s):  
Chiman Kwan ◽  
Jude Larkin
Keyword(s):  
Deep Learning ◽  
Image Quality ◽  
Poisson Noise ◽  
Color Filter ◽  
Digital Cameras ◽  
Critical Step ◽  
Lighting Conditions ◽  
Bayer Pattern ◽  
Filter Array ◽  
The Impact

In modern digital cameras, the Bayer color filter array (CFA) has been widely used. It is also widely known as CFA 1.0. However, Bayer pattern is inferior to the red-green-blue-white (RGBW) pattern, which is also known as CFA 2.0, in low lighting conditions in which Poisson noise is present. It is well known that demosaicing algorithms cannot effectively deal with Poisson noise and additional denoising is needed in order to improve the image quality. In this paper, we propose to evaluate various conventional and deep learning based denoising algorithms for CFA 2.0 in low lighting conditions. We will also investigate the impact of the location of denoising, which refers to whether the denoising is done before or after a critical step of demosaicing. Extensive experiments show that some denoising algorithms can indeed improve the image quality in low lighting conditions. We also noticed that the location of denoising plays an important role in the overall demosaicing performance.

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