Population structure analysis and marker trait association in selected set of Indian tomato (Solanum lycopersicum L.) varieties under high temperature condition

Amrutha, V.; Shanija, S.; Beena, R.; Nithya, N.; Jaslam, M. P. K.; Soni, Kartik; Viji, M.

doi:10.1007/s10722-021-01216-2

Cited by 7 publications

(5 citation statements)

References 55 publications

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“…Due to a disrupted root-nutrient interaction, high temperatures exacerbate root heat stress (HS) and have an adverse effect on nutritional quality [37,38]. Thus, by restricting the availability of water, nutrients, and hormones that affect the sink-source relationships between roots and shoots, high temperatures inhibit root growth, diminish the shoot system, and ultimately lower fruit output [39,40]. Decreases in nutrient acquisition with heat stress could potentially be caused by several factors, including a decrease in root mass or surface area and/or a decrease in nutrient uptake per unit root, as well as reduced photosynthetic efficiency [39].…”

Section: Discussionmentioning

confidence: 99%

“…Thus, by restricting the availability of water, nutrients, and hormones that affect the sink-source relationships between roots and shoots, high temperatures inhibit root growth, diminish the shoot system, and ultimately lower fruit output [39,40]. Decreases in nutrient acquisition with heat stress could potentially be caused by several factors, including a decrease in root mass or surface area and/or a decrease in nutrient uptake per unit root, as well as reduced photosynthetic efficiency [39]. Furthermore, it is evident that reductions in root growth and the rate at which plants absorb nutrients are the result of heat-stress-induced cell damage in the root [40].…”

Section: Discussionmentioning

confidence: 99%

“…Plant morphology, anatomy, phenology, and biochemistry are all disrupted by temperature variations at all organizational levels. Elevated temperatures directly result in protein denaturation, which in turn causes membrane lipids to become more fluid, enzymes in mitochondria and chloroplasts to become inactive, and membrane integrity to be disrupted in plants [11]. Furthermore, plants under high temperature stress produce reactive oxygen species (ROS) like hydrogen peroxide, singlet oxygen, superoxide, and hydroxyl radicals; the accumulation of ROS is the main cause of crop loss [8,12,13].…”

Section: Introductionmentioning

confidence: 99%

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Response of Tomato Quality and Yield to Elevated Temperatures under Controlled Environment

Vijayakumar,

Beena R.

2023

IJECC

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The experiment was carried out during 2020-2021 at the Department of Plant Physiology, College of Agriculture, Vellayani, Kerala Agricultural University. The experiment was carried out with the aim of characterization of contrasting tomato genotypes for high temperature tolerance under high temperature condition and control condition to identify key quality and yield traits controlling high temperature tolerance in tomato. The experiment was designed in completely randomized design (CRD) with 2 treatment levels- control and high temperature conditions (36+/-2oC) wherein 3 tolerant and 3 susceptible genotypes were selected for the study. These genotypes were selected from the summer varietal screening experiment performed during the summer months of 2021 from March to May. The best performing genotypes were selected in terms of pollen viability, leaf membrane thermo-stability, chlorophyll fluorescence, number of fruits, fruit set %. One set of treatment was maintained under ambient condition and the other set with high temperature stress was maintained under polyhouse facility from transplanting stage to the harvesting stage. The quality parameters and yield traits were analysed at the harvesting stage of the crop. From this study it can be understood that many of the quality parameters like lycopene content, total sugars, flavanol content was found decreasing in both tolerant and susceptible genotypes but the extend of this reduction was considerate in tolerant ones. In case of ascorbic acid content and firmness of fruit at the time of ripening these were found to be improved in heat stress (HS) conditions. Yield related qualities like number of fruits, yield per plant, and root-shoot ratio was found decreasing whereas root dry weight, total dry weight and intensity of fruit drop and flower drop was increased under HS. Therefore, this study focused on tomato genotypes reported to be resilient to high-temperature stress, and comparing them to the susceptible cultivars under stress and control settings for analyzing the variations in terms of quality and yield traits in tropical hot climate regions of India. The study performed here highlights the possibility for future breeding programs utilizing the key quality and yield traits enhancing thermo-tolerance in tomato and to develop new genotypes that can combine good yield performances and fruit nutritional quality at high temperatures.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Response of Tomato Quality and Yield to Elevated Temperatures under Controlled Environment

Vijayakumar,

Beena R.

2023

IJECC

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“…This helps landraces adapt to a wide range of agro-ecological settings, and they also offer unrivalled quality features, medicinal capabilities better environmental adaptations and are an irreplaceable source of highly co-adapted genotypes (Borba et al 2009; Kumbhar et al 2015). The amount genetic diversity present in the population determines the pace and magnitude of the genetic improvement i.e., genetic diversity is necessary to study the genetic structure of a population and to orientate effective strategies of germplasm conservation (Borba et al 2010;Nithya et al, 2021;Amrutha et al, 2022). Usually, the genetic diversity in plants has been determined by physiological and morphological traits.…”

Section: Introductionmentioning

confidence: 99%

Population Structure Analysis and Marker Trait Association in Traditional Rice (Oryza sativa L.) Landraces of Kerala under High Temperature Condition

R.,

et al. 2023

Preprint

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Rice productivity is significantly impacted by a significant abiotic stress called heat stress. To adapt to current or future heat stress, it is necessary to understand the physiological basis of heat tolerance. Thus, the purpose of this study was to assess the physiological, morphological, and yield parameters of fifty traditional rice landraces when subjected to high temperature stress, as well as to identify SSR (Simple Sequence Repeat) markers associated with these traits. The experiment was designed in a completely randomised manner, with two treatment levels, control and high temperature stress (36 ± 2oC), each with three replications. Thirty SSR primers were used to analyze genetic diversity and population structure among 50 traditional rice landraces collected from Regional Agricultural Research Station, Pattambi, Kerala. The fifty traditional rice landraces were clustered using the average linkage method to determine their relationship to one another. The accessions were all grouped primarily into three clusters. According to principal component analysis, under high temperature conditions, the first principal component accounted for 24.602 percent of the variation, while the second component accounted for 20.587 percent of the variation. The accessions were clearly divided into three subpopulations based on population structure analysis. Under high temperature and control conditions, GLM (Generalized Linear Model) analysis revealed highly significant marker trait associations.RM5715, RM10793, and RM471 were among those that showed associations with multiple traits. Molecular markers and identified tolerant accessions can be used in breeding programmes to create high-yielding, temperature-tolerant rice landraces.

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“…Increasing the yield of rice grains per unit area is essential for ensuring food security because of the shrinking amount of land available for farming and the rising world population, especially in growing Asia-Pacific nations like China and India (Yin et al 2021). Rising temperature is one of the most important challenge in tropical climate [4].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Rice (Oryza sativa L.) Accessions Genetic Variability Related to Yield and Its Components

Khaire

Singh

Vijay

et al. 2022

CJAST

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This experiment was conducted to study the variability parameters of forty rice genotypes to evaluate genetic parameters i.e., Genotypic variability coefficient (GVC), Phenotypic variability coefficient (PVC), Heritability (H) and mean percent of Genetic advance (MGA) for nine different yield and yield-contributing traits at Agriculture Research Farm, Banaras Hindu University, Varanasi during Kharif-2018. The data were collected for nine yield and yield attributing traits subjected to alpha lattice design and analyzed in R-software. The PCV magnitude was found slightly higher than GCV indicating that this trait is less influenced by environmental factors. The highest GCV and PCV are found for yield (37.70 % to 38.27% respectively) followed by number of tillers per plant number of effective tillers per plant (GCV: 19.47%, PCV: 21.04%) and plant height (GCV: 14.99, PCV: 16.40). high heritability (>70%) coupled with high percent of mean genetic advance (MGA) (>20%) were recorded for days to fifty percent flowering, days to maturity, plant height, number of effective tillers, panicle length, spikelet fertility, test weight, grain yield per plant and harvest index indicating that the simple selection will be effective for this trait improvement.

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Population structure analysis and marker trait association in selected set of Indian tomato (Solanum lycopersicum L.) varieties under high temperature condition

Cited by 7 publications

References 55 publications

Response of Tomato Quality and Yield to Elevated Temperatures under Controlled Environment

Response of Tomato Quality and Yield to Elevated Temperatures under Controlled Environment

Population Structure Analysis and Marker Trait Association in Traditional Rice (Oryza sativa L.) Landraces of Kerala under High Temperature Condition

Analysis of Rice (Oryza sativa L.) Accessions Genetic Variability Related to Yield and Its Components

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