BIOLOGICAL FEATURES OF Brassica rapa L. VEGETABLE LEAFY CROPS WHEN GROWING IN AN INTENSIVE LIGHT CULTURE

Artemyeva, A. M.

doi:10.15389/agrobiology.2021.1.103eng

Cited by 6 publications

(6 citation statements)

References 21 publications

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“…It is known that species and varietal characteristics, weather conditions, place of cultivation, and phenological phase affect the concentration of phytochemical components [41]. Despite the clearly pronounced importance of B. rapa crops as sources of biologically active substances necessary for healthy human nutrition, to date, only limited information has been obtained on the genetic nature and inheritance of economically valuable traits of quality in this species [42,43].…”

Section: Resultsmentioning

confidence: 99%

QTL Analysis of the Content of Some Bioactive Compounds in Brassica rapa L. Grown under Light Culture Conditions

et al. 2021

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The article presents the results of biochemical and QTL (Quantitative Trait Loci) analysis of dry matter content, nutrient and biologically active compounds: sugars, ascorbic acid, chlorophylls a and b, anthocyanins and carotenoids in populations of doubled haploid lines of leaf, root crops, and oilseeds of the Brassica rapa L. species grown in optimal light culture conditions, but with different photoperiod durations. The purpose of this study was to evaluate the effect of the photoperiod on the transition to bolting and the accumulation of biologically active substances, as well as how the localization and identification of chromosomal loci determined the content of certain phytochemicals. The influence of the length of daylight hours on the content of components of the biochemical composition was assessed. It was shown that growing under conditions of a 16 h photoperiod increased the content of dry matter, sugars, vitamin C, and anthocyanins. On the contrary, the content of photosynthetic pigments was higher under the conditions of a 12 h photoperiod. Valuable lines that can be sources of biologically active compounds were revealed. Based on the results of the obtained data, 102 QTLs were mapped, which determine the manifestation of the studied biochemical quality traits in the B. rapa doubled haploid lines under conditions of short and long daylight hours. Molecular markers genetically linked to the selected QTLs were determined. It was revealed that the identified loci controlling all the studied biochemical traits were mainly in the fifth, sixth, seventh, and ninth linkage groups, which correlated with the data obtained in the field and greenhouse. Most of the identified loci controlled several studied traits simultaneously. The identified QTLs and identified molecular markers are of interest for further study of the genetic control of the economically valuable traits determined by them and for the implementation of marker-assisted selection in B. rapa. The data obtained can be used in genetic and breeding work, including for the obtaining of new genotypes, lines and cultivars with a valuable biochemical composition, adapted for cultivation under specific photoperiodic conditions.

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Section: Resultsmentioning

confidence: 99%

QTL Analysis of the Content of Some Bioactive Compounds in Brassica rapa L. Grown under Light Culture Conditions

et al. 2021

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“…At the end of the vegetative experiment performed in 10 replications, biometric parameters of plant growth, including wet (Bw, g) and dry (Bd, g) leaf mass, were measured. The lettuce leaf area was determined from its linear dimensions using 0.67 as the calculated coefficients for different shapes of a brassica crop leaf blade [28]. The leaf area of a plant (LA, dm 2 ) was calculated by the formula S 2 = 0.67 × (S 1 × n), where S 1 is the average area of one leaf, and n is the number of leaves.…”

Section: Morpho-physiological Characteristicsmentioning

confidence: 99%

Morpho-Physiological, Chlorophyll Fluorescence, and Diffuse Reflectance Spectra Characteristics of Lettuce under the Main Macronutrient Deficiency

Kanash,

Sinyavina,

Rusakov

et al. 2023

Horticulturae

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The aim of the present work was to assess the physiological state of plants and photosynthetic apparatus activity in lettuce (Lactuca sativa L.) by non-invasive methods (leaf diffuse reflectance spectroscopy and chlorophyll fluorescence) under the deficiency of one of the macronutrients (nitrogen, phosphorus, or potassium). Our experiments assessed the deficiency of each of the macronutrients relative to plants vegetating under optimal nutrition. The used methods showed that the deficiency of macronutrients causes changes in the optical characteristics of lettuce plants (cvs. ‘Vitaminnyi’ and ‘Kokarda’), including a decrease in the chlorophyll content (57% and 51%) and a change in metabolism, which leads to a decrease in the efficiency of light energy conversion in photochemical processes of photosynthesis and an increase in the dissipation of excess light energy (19% and 10%). Linear regression equations, describing the relationship between net productivity and spectral characteristics of diffuse leaf reflectance with high accuracy, have been obtained. Changes in all studied indicators of the physiological state of plants under the influence of macronutrient deficiency are more pronounced at the early stages of development than in later periods, when the first symptoms of aging appear (decrease in ChlRI). The observed differences between lettuce cultivars and their response to nitrogen, phosphorus, or potassium deficiency are non-specific and mainly represent quantitative variation. The method for assessing the spectral characteristics of diffuse reflection of leaves seems to be the most promising for monitoring the physiological status of plants and early detection of nitrogen, phosphorus, or potassium deficiency.

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“…Breeding and genetic studies are particularly relevant today, as they are aimed at creating new forms of agricultural crops for CEAL, taking into account its characteristics and the needs of producers [15,16]. For this purpose, phenotyping of collections, qualitative and quantitative assessment of the accessions, and identification of breeding-valuable traits sources are currently being carried out in light culture [5,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Breeding Approaches for Controlled Conditions of Artificial Light Culture for Small Radish and Radish (Raphanus sativus L.)

et al. 2023

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This paper presents the results of breeding and genetic studies of Raphanus sativus L. under the controlled conditions of the biopoligon of the Agrophysical Research Institute (St. Petersburg, Russia). The aim of this study was to create new R. sativus forms for controlled environments with artificial lightning (CEAL). An original technique for accelerated transgressive plant breeding was used. It is based on the methodology for predicting transgressions by economically valuable plant traits when evaluating breeding traits under controlled conditions. Using it in a short period of time (4–5 years) greatly increases productive accessions of small radish and radish adapted to light culture, and a set of valuable characteristics (resistance to bolting, glabrous leaves, compact leaf rosette) were obtained. The yield of roots of new forms was 4.30–4.98 kg/m2 (small radish) and 5.46–7.66 kg/m2 (radish) for the growing period. Transgression by root mass was observed in plants of three new forms and amounted to 40.7–63.0% in small radish and 40.3% in radish. The breeding of new genotypes of R. sativus is aimed at expanding the range of crops cultivated in plant factories, and ultimately, at a better and more balanced nutrition for the population.

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BIOLOGICAL FEATURES OF Brassica rapa L. VEGETABLE LEAFY CROPS WHEN GROWING IN AN INTENSIVE LIGHT CULTURE

Cited by 6 publications

References 21 publications

QTL Analysis of the Content of Some Bioactive Compounds in Brassica rapa L. Grown under Light Culture Conditions

QTL Analysis of the Content of Some Bioactive Compounds in Brassica rapa L. Grown under Light Culture Conditions

Morpho-Physiological, Chlorophyll Fluorescence, and Diffuse Reflectance Spectra Characteristics of Lettuce under the Main Macronutrient Deficiency

Breeding Approaches for Controlled Conditions of Artificial Light Culture for Small Radish and Radish (Raphanus sativus L.)

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