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https://www.readbyqxmd.com/read/29785043/effect-of-plant-density-boron-nutrition-and-growth-regulation-on-seed-mass-emergence-and-offspring-growth-plasticity-in-cotton
#1
Ali Zohaib, Tahira Tabassum, Abdul Jabbar, Shakeel Ahmad Anjum, Tasawer Abbas, Azhar Mehmood, Sohail Irshad, Muhammad Kashif, Mohsin Nawaz, Naila Farooq, Irfan Rasool Nasir, Tassadduq Rasool, Mubashar Nadeem, Riaz Ahmad
Seed nutrients reserves have direct relationship with seed functional traits and influence offspring performance. Effects of plant density, foliage boron (B) nutrition and mepiquat chloride (MC) growth regulation on seed nutrients reserves, seed mass and production, and emergence and offspring growth traits of cotton were studied in two years field experiment. Seed nutrients reserves and seed mass were decreased at higher maternal plant density relative to lower plant density with concomitant decrease in emergence and offspring seedling growth...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29761415/effects-of-genetic-distance-on-heterosis-in-a-drosophila-melanogaster-model-system
#2
Charlotte Jensen, Michael Ørsted, Torsten Nygaard Kristensen
Habitat fragmentation and small population sizes can lead to inbreeding and loss of genetic variation, which can potentially cause inbreeding depression and decrease the ability of populations to adapt to altered environmental conditions. One solution to these genetic problems is the implementation of genetic rescue, which re-establishes gene flow between separated populations. Similar techniques are being used in animal and plant breeding to produce superior production animals and plants. To optimize fitness benefits in genetic rescue programs and to secure high yielding domestic varieties in animal and plant breeding, knowledge on the genetic relatedness of populations being crossed is imperative...
May 14, 2018: Genetica
https://www.readbyqxmd.com/read/29741266/long-term-monitoring-of-b-chromosome-invasion-and-neutralization-in-a-population-of-prospero-autumnale-asparagaceae
#3
Pedro Lanzas, Francisco Perfectti, Manuel A Garrido-Ramos, Carmelo Ruíz-Rejón, Mónica González-Sánchez, María Puertas, Juan Pedro M Camacho
B chromosomes have been reported in about 15% of eukaryotes, but long term dynamics of B chromosomes in a single natural population has rarely been analysed. Prospero autumnale plants collected in 1981 and 1983 at Cuesta de La Palma population have shown the presence of B chromosomes. We analyze here seven additional samples collected between 1987 and 2015, and show that B frequency increased significantly during the 1980's and showed minor fluctuations between 2005 and 2015. A mother-offspring analysis of B chromosome transmission, at population level, showed significant drive on the male side (kB = 0...
May 9, 2018: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/29735988/evolution-of-invasiveness-by-genetic-accommodation
#4
Dan G Bock, Michael B Kantar, Celine Caseys, Remi Matthey-Doret, Loren H Rieseberg
Invasion success of species introduced to novel environments may be facilitated by adaptive evolution and by phenotypic plasticity. Here we investigate the independent and joint contribution of both mechanisms as drivers of invasiveness in the perennial sunflower Helianthus tuberosus. We show that invasive genotypes have multiple origins, and that invasive spread was facilitated by the repeated evolution of extreme values in a single trait, clonality. In line with genetic accommodation theory, we establish that this evolutionary transition occurred by refining a preexisting plastic response of clonality to water availability...
May 7, 2018: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/29725103/gene-retention-fractionation-and-subgenome-differences-in-polyploid-plants
#5
REVIEW
Feng Cheng, Jian Wu, Xu Cai, Jianli Liang, Michael Freeling, Xiaowu Wang
All natural plant species are evolved from ancient polyploids. Polyloidization plays an important role in plant genome evolution, species divergence and crop domestication. We review how the pattern of polyploidy within the plant phylogenetic tree has engendered hypotheses involving mass extinctions, lag-times following polyploidy, and epochs of asexuality. Polyploidization has happened repeatedly in plant evolution and, we conclude, is important for crop domestication. Once duplicated, the effect of purifying selection on any one duplicated gene is relaxed, permitting duplicate gene and regulatory element loss (fractionation)...
May 2018: Nature Plants
https://www.readbyqxmd.com/read/29699543/what-predicts-emotional-response-in-men-awaiting-prostate-biopsy
#6
AnnMarie Groarke, Ruth Curtis, Deirdre M J Walsh, Francis J Sullivan
BACKGROUND: Incidence of prostate cancer is increasing as opportunistic screening becomes widespread and life expectancy rises. Despite screening availability, research reveals conflicting results on medical outcomes, for example, disease specific mortality. However the gold standard in early diagnosis of potentially curable organ confined prostate cancer is transrectal ultrasound-guided systematic prostate biopsy (TRUS-BX). While focus has been given to medical sequalae there is a paucity of research on the psychological impact of biopsy...
April 24, 2018: BMC Urology
https://www.readbyqxmd.com/read/29692146/-effects-of-exogenous-salicylic-acid-on-seed-germination-and-physiological-characteristics-of-coronilla-varia-under-drought-stress
#7
Le Yuan Ma, Nian Lai Chen, Guo Jun Han, Liang Li
This research investigated the effects of different concentrations (0, 0.5, 1.0, 2.0 mmol·L-1 ) of salicylic acid on the seed germination and physiological characteristics of legume forage Coronilla varia (cultivar 'Lvbaoshi') under PEG-6000 (concentration 8% and 12%) simulated drought stress. The results showed that under drought stress, 0.5-1.0 mmol·L-1 salicylic acid significantly increased germination percentage, germination vigour, germination index, vitality index and bud length of C. varia. Under the stress of 12% PEG, the dry mass of C...
October 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29679934/nanopriming-with-zero-valent-iron-nzvi-enhances-germination-and-growth-in-aromatic-rice-cultivar-oryza-sativa-cv-gobindabhog-l
#8
Titir Guha, K V G Ravikumar, Amitava Mukherjee, Anita Mukherjee, Rita Kundu
Engineered nanoparticles are utilized in agriculture for various purposes. They can be used as fertilizer, carrier for macro/micro nutrients or priming agents. Various nanoparticles are reported to have toxicity at very high doses, but at optimum concentration, they can be beneficial for plant growth and development. In the present study, low concentrations of nZVI nanoparticles were evaluated for their growth enhancement potential as seed priming agent in an aromatic rice cultivar, Oryza sativa cv. Gobindabhog...
April 12, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29679097/quantitative-trait-loci-qtls-for-water-use-and-crop-production-traits-co-locate-with-major-qtl-for-tolerance-to-water-deficit-in-a-fine-mapping-population-of-pearl-millet-pennisetum-glaucum-l-r-br
#9
Murugesan Tharanya, Jana Kholova, Kaliamoorthy Sivasakthi, Deepmala Seghal, Charles Tom Hash, Basker Raj, Rakesh Kumar Srivastava, Rekha Baddam, Thiyagarajan Thirunalasundari, Rattan Yadav, Vincent Vadez
Four genetic regions associated with water use traits, measured at different levels of plant organization, and with agronomic traits were identified within a previously reported region for terminal water deficit adaptation on linkage group 2. Close linkages between these traits showed the value of phenotyping both for agronomic and secondary traits to better understand plant productive processes. Water saving traits are critical for water stress adaptation of pearl millet, whereas maximizing water use is key to the absence of stress...
April 21, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/29675895/at-vessel-mortality-of-skates-rajidae-taken-in-coastal-fisheries-and-evidence-of-longer-term-survival
#10
J R Ellis, G J Burt, G Grilli, S R McCully Phillips, T L Catchpole, D L Maxwell
Data on the vigour and at-vessel mortality (AVM) of 6798 skates (comprising Raja clavata n = 6295; R. brachyura n = 208; R. undulata n = 185, R. montagui n = 98 and R. microocellata n = 12) captured by commercial fishing vessels in the inshore waters of the southern North Sea and English Channel were recorded. AVM in longline fisheries averaged 0·44% across five vessels (0-1·47%), although skates were usually unhooked manually and did not usually pass through a bait-stripper. AVM in otter trawls averaged 0·76% (0-2·35%), from four vessels fishing with tow durations of <1·5 h (southern North Sea) or 1-4 h (English Channel)...
April 19, 2018: Journal of Fish Biology
https://www.readbyqxmd.com/read/29674259/spatial-variability-in-orchards-after-land-transformation-consequences-for-precision-agriculture-practices
#11
Asier Uribeetxebarria, Elisa Daniele, Alexandre Escolà, Jaume Arnó, José A Martínez-Casasnovas
The change from traditional to a more mechanized and technical agriculture has involved, in many cases, land transformations. This has supposed alteration of landforms and soils, with significant consequences. The effects of induced soil variability and the subsequent implications in site-specific crop management have not been sufficiently studied. The present work investigated the application of a resistivity soil sensor (Veris 3100), to map the apparent electrical conductivity (ECa), and detailed multispectral airborne images to analyse soil and crop spatial variability to assist in site-specific orchard management...
April 16, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29672668/distinct-effects-of-apathy-and-dopamine-on-effort-based-decision-making-in-parkinson-s-disease
#12
Campbell Le Heron, Olivia Plant, Sanjay Manohar, Yuen-Siang Ang, Matthew Jackson, Graham Lennox, Michele T Hu, Masud Husain
Effort-based decision-making is a cognitive process crucial to normal motivated behaviour. Apathy is a common and disabling complication of Parkinson's disease, but its aetiology remains unclear. Intriguingly, the neural substrates associated with apathy also subserve effort-based decision-making in animal models and humans. Furthermore, the dopaminergic system plays a core role in motivating effortful behaviour for reward, and its dysfunction has been proposed to play a crucial role in the aetiology of apathy in Parkinson's disease...
April 17, 2018: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29660183/interaction-of-maternal-environment-and-allelic-differences-in-seed-vigour-genes-determines-seed-performance-in-brassica-oleracea
#13
Sajjad Awan, Steven Footitt, William E Finch-Savage
Seed vigour is a key trait essential for the production of sustainable and profitable crops. The genetic basis of variation in seed vigour has recently been determined in Brassica oleracea, but the relative importance of the interaction with parental environment is unknown. We produced seeds under a range of maternal environments, including global warming scenarios. Lines were compared that had the same genetic background, but different alleles (high and low vigour) at QTLs responsible for determining seed vigour by altering ABA content and sensitivity...
April 16, 2018: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29642681/the-effect-of-nutrition-and-body-condition-of-triplet-bearing-ewes-during-late-pregnancy-on-the-behaviour-of-ewes-and-lambs
#14
Gabriella V Gronqvist, Rene A Corner-Thomas, Paul R Kenyon, Kevin J Stafford, Stephen T Morris, Rebecca Edith Hickson
Objective: Triplet-born lambs are less likely to survive to weaning than twin-born or single-born lambs. Appropriate ewe-lamb bonding behaviours and lamb vigour behaviours are necessary for survival of lambs. The aim of this experiment was to determine whether maternal nutrition during late pregnancy influenced behaviour of the ewe and her lambs soon after birth, and to determine whether mid-pregnancy body condition score (BCS) influenced any behavioural response. Methods: The experiments included ewes that were in BCS 2...
April 12, 2018: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/29587459/seed-hydropriming-and-smoke-water-significantly-improve-low-temperature-germination-of-lupinus-angustifolius-l
#15
Agnieszka Płażek, Franciszek Dubert, Przemysław Kopeć, Michał Dziurka, Agnieszka Kalandyk, Jakub Pastuszak, Bogdan Wolko
Seed imbibition under cold temperature is dangerous when dry seeds have relatively low water content. The aim of this study was to investigate germination of 20 lines/cultivars of narrow-leaf lupine at 7 °C (cold) and 13 °C (control) under the influence of smoke water and following seed hydropriming for 3 h at 20 °C. The efficacy of individual treatments was examined with regard to seed protection during low-temperature germination. Based on seed germination, vigour at cold was evaluated four days after sowing by means of hypocotyl length, the studied lines/cultivars were divided into three groups with low, high and very high germination rates...
March 26, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29551211/population-diversity-of-bacterial-endophytes-from-jute-corchorus-olitorius-and-evaluation-of-their-potential-role-as-bioinoculants
#16
Badrul Haidar, Mahbuba Ferdous, Babry Fatema, Ahlan Sabah Ferdous, Mohammad Riazul Islam, Haseena Khan
Endophytes are bacterial or fungal organisms associated with plants in an obligate or facultative manner. In order to maintain a stable symbiosis, many of the endophytes produce compounds that promote plant growth and help them adapt better to the environment. This study was conducted to explore the potential of jute bacterial endophytes for their growth promotion ability in direct and indirect ways. A total of 27 different bacterial species were identified from different varieties of a jute plant (Corchorus olitorius) and different parts of the plant (leaf, root, seed, and seedling) based on 16S rRNA gene sequence...
March 2018: Microbiological Research
https://www.readbyqxmd.com/read/29540868/is-the-dental-clinical-learning-environment-suitable-a-survey-of-khyber-pakhtunkhwa-pakistan
#17
Ahsan Sethi, Aiman Khan
OBJECTIVE: To assess the clinical learning environment in dental institutes of Khyber Pakhtunkhwa. METHODS: The multi-centre cross-sectional survey was conducted from January to May 2017, and comprised students of three institutes affiliated with three different universities in Khyber Pakhtunkhwa province of Pakistan. These included the public-sector Khyber Medical University and two in the private sector: Gandhara University and Riphah International University...
March 2018: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/29517341/do-mothers-enjoy-playing-sensitively-with-their-infants
#18
Samantha Goldwater-Adler, Lori Wozney, Patrick J McGrath
BACKGROUND: Early sensitive caregiver-infant interactions form an important foundation for infant development. Although mutual enjoyment is thought to motivate proximity and continued interactions, there is no empirical evidence that mothers enjoy interacting and behaving sensitively. Research to date has focused on the influence of stable/pathological maternal negative emotions on parenting, with parenting often assessed on one occasion only. Therefore, little is known about what accounts for the variability in sensitivity across interactions...
February 15, 2018: Journal of Reproductive and Infant Psychology
https://www.readbyqxmd.com/read/29489732/associatons-between-self-reported-wellbeing-and-neuromuscular-performance-during-a-professional-rugby-union-season
#19
Samuel P Hills, David J Rogerson
Self-reported wellness is often used to monitor fatigue responses to training and competition. Constraints within team sports mean short-form wellness questionnaires are typically preferred to literature-validated documents. This research aimed to assess the relationship between self-reported wellness and neuromuscular performance during a professional rugby union season, and to identify changes in these parameters over a 12-week period. On the first training day each week, prior to activity, 37 players rated 5 wellness subscales ('fatigue/vigour', 'upper-body soreness', 'lower-body soreness', 'mood', 'sleep quality/duration'), on a 1-5 Likert scale (1 representing the lowest wellness), and 5-repetition countermovement jumps (CMJ) were completed following a warm-up...
February 27, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29427342/germination-characteristics-of-rhinanthus-minor-influence-field-emergence-competitiveness-and-potential-use-in-restoration-projects
#20
M Marin, G Laverack, S Matthews, A A Powell
The facultative root hemi-parasite Rhinanthus minor is often used in grassland habitat restoration projects to regulate ecosystem structure and function. Its impact on community productivity and diversity as a function of resource supply, sward composition and management has been widely investigated. However, there is a lack of information about the possible influence of seed quality on the efficacy of the hemi-parasite. Ten seed lots from commercial sources were sown in the field and their germination characteristics were investigated in the laboratory...
February 10, 2018: Plant Biology
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