Brazilian Journal of Botany

Papers
(The median citation count of Brazilian Journal of Botany is 1. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2020-11-01 to 2024-11-01.)
ArticleCitations
Comparative morphology, anatomy and chemotaxonomy of two Cissus Linn. species42
Arsenic contamination, speciation, toxicity and defense strategies in plants32
A living bridge between two enemies: haustorium structure and evolution across parasitic flowering plants31
Physiological Mechanism of Salicylic Acid in Mentha pulegium L. under salinity and drought stress28
Effects of dry and rainy seasons on the chemical composition of Ulva fasciata, Crassiphycus corneus, and Sargassum vulgare seaweeds in tropical environment17
Biogeography of Neotropical Meliaceae: geological connections, fossil and molecular evidence revisited15
An updated account of Simaroubaceae with emphasis on American taxa13
Herbaceous-shrub species composition, diversity and soil attributes in moist grassland, shrub grassland and savanna in Central Brazil13
Evaluation of volatile organic compounds in brown and red sub-Antarctic macroalgae12
Morpho-physiological changes in carrots by foliar γ-aminobutyric acid under drought stress12
Gamma-aminobutyric acid (GABA) and salinity impacts antioxidative response and expression of stress-related genes in strawberry cv. Aromas12
Morphological and anatomical changes during floral bud development of the trioecious Idesia polycarpa Maxim12
Transcriptome profiling reveals candidate genes associated with cold stress in mulberry11
The wood anatomy of Sapindales: diversity and evolution of wood characters11
Dormancy in Tilia miqueliana is attributable to permeability barriers and mechanical constraints in the endosperm and seed coat11
Genetic and evolutionary analyses of plastomes of the subfamily Cactoideae (Cactaceae) indicate relaxed protein biosynthesis and tRNA import from cytosol11
Diversity and evolution of secretory structures in Sapindales11
Underground system of geoxylic species of Homalolepis Turcz. (Simaroubaceae, Sapindales) from the Brazilian Cerrado10
Trait variability in co-occurring invasive and native plant species in road side population of Kumaun Himalaya10
Transcriptome analysis of flower color variation in five Rhododendron species (Ericaceae)10
The physiological function and molecular mechanism of hydrogen sulfide resisting abiotic stress in plants10
CO2 enrichment alters morphophysiology and improves growth and acclimatization in Etlingera Elatior (Jack) R.M. Smith micropropagated plants10
Plant phenolics: neglected secondary metabolites in plant stress tolerance9
A review of systematics studies in the Citrus family (Rutaceae, Sapindales), with emphasis on American groups9
Effects of ocean acidification on growth, pigment contents and antioxidant potential of the subtropical Atlantic red alga Hypnea pseudomusciformis Nauer, Cassano & M.C. Oliveira (Gigartinales) in 9
A review of Neotropical Burseraceae9
The role of seaweed extract on improvement drought tolerance of wheat revealed by osmoprotectants and DNA (cpDNA) markers9
Neotropical Anacardiaceae (cashew family)8
Pollen morphology and evolutionary history of Sapindales8
Microcystins presence threatens the ecosystem health of a tropical National Park: Lagunas de Montebello, Chiapas8
Castela (Simaroubaceae), an impressive New World radiation of thorny shrubs destined for edaphically dry habitats8
Nortriterpenes, chromones, anthraquinones, and their chemosystematics significance in Meliaceae, Rutaceae, and Simaroubaceae (Sapindales)7
Flooding tolerance in plants: from physiological and molecular perspectives7
Chromosome numbers in Homalolepis Turcz. and their significance in Simaroubaceae evolution7
Rhodophyta, Ochrophyta and Chlorophyta macroalgae from different sub-Antarctic regions (Chile) and their potential for polyunsaturated fatty acids7
Bixa orellana L. from northern Brazil: morphological analysis, phenolic content, antioxidant and antibacterial activities7
24-Epibrassinolide induces protection against nickel excess in soybean plants: anatomical evidences7
Pulvinus or not pulvinus, that is the question: anatomical features of the petiole in the Citrus family (Rutaceae, Sapindales)7
Effects of shading on growth and photosynthetic metabolism in Dipteryx alata Vogel seedlings under flooding6
The role of macrophyte architecture in driving periphytic algal communities in a lowland river in the Brazilian Amazon6
What reproductive traits tell us about the evolution and diversification of the tree-of-heaven family, Simaroubaceae6
Climate change impacts on the Copernicia alba and Copernicia prunifera (Arecaceae) distribution in South America6
Revisiting pericarp structure, dehiscence and seed dispersal in Galipeeae (Zanthoxyloideae, Rutaceae)6
Pigment profile and gene analysis revealed the reasons of petal color difference of crabapples6
Phytochemical screening and evaluation of the antioxidant and anti-bacterial activity of Woundwort (Anthyllis vulneraria L.)6
Strategies for the protection of shoot buds in phanerophyte and geophyte species of Homalolepis Turcz. (Simaroubaceae, Sapindales)6
Disentangling the identity of two Jacquemontia Choisy (Convolvulaceae Juss.) species using an integrative approach6
GC–MS and FTIR spectroscopy for the identification and assessment of essential oil components of five cinnamon leaves6
EST-SSR marker-based genetic diversity and population structure analysis of Indian Curcuma species: significance for conservation6
The effects of heavy metals on the anatomical structures of Avicennia marina (Forssk.) Vierh6
Using morphofunctional characteristics as a model of phytoplankton dynamics in a tropical reservoir5
Biogeography and Conservation of Gesneriaceae in the Serra da Mantiqueira, Southeastern Region of Brazil5
Differences in soil properties influence floristic changes in the Veredas of the Brazilian Cerrado5
Seasonal variation of flavonoid metabolites in leaves of Liquidambar formosana ‘Nanlinhong’ trees revealed by UPLC-ESI–MS/MS5
Comparative analysis of salt-induced changes in the root physiology and proteome of the xero-halophyte Salsola crassa5
Uncovering morphological and physiological markers to distinguish Azolla strains5
Population-level analysis of leaf anatomy of Daustinia montana (Moric.) Buril & A.R. Simões: a polymorphic species with tangled taxonomic history5
Chromosome numbers and their evolutionary meaning in the Sapindales order: an overview5
A comprehensive review of the chemical composition and epicuticular wax morphology of the cuticle in Sapindales4
Comparative chromosomal features and new karyological data in Salvia: B-chromosomes, polyploidy, dysploidy and symmetric karyotypes4
Contributions to the palynological study of selected species of Cissus L. (Vitaceae): a new appreciation of ornamentation4
New insights into the molecular mechanism of low-temperature stratification on dormancy release and germination of Saposhnikovia divaricata seeds4
Variability in the quality of pollen grains in oat amphiploids and their parental species4
Gynodioecy in Trichilia (Meliaceae) and a peculiar case of male sterility due to tapetal necrotic cell death4
Targeted profiling and temporal expression of a few key genes revealed an apparent coordination among the metabolites contributing to the volatiles internal pool in Jasminum sambac (L.) Aiton flowers4
Genetic diversity and identification of interspecific hybrids of Anacardium species using microsatellites4
From the wild to the field: effect of foliar or soil application of inorganic or semi-organic fertilizers on various parameters of four local endemic plant species of Crete (Greece)4
Serendipita indica (Piriformospora indica) inoculation improves photosynthetic performance and antioxidative potential of proso millet (Panicum miliaceum L.) under copper stress conditions4
Molecular and physiological aspects of plant responses to aluminum: what do we know about Cerrado plants?4
Flowering characteristics and mating system of Fritillaria cirrhosa (Liliaceae), an endangered plant in China4
Effects of salinity on growth, physiological and anatomical traits of Passiflora species propagated from seeds and cuttings4
Assembling the puzzle: Complete chloroplast genome sequences of Discocactus bahiensis Britton & Rose and Melocactus ernestii Vaupel (Cactaceae) and their evolutionary significance4
The cytokinin 6-Benzylaminopurine improves the formation and development of Dryadella zebrina (Orchidaceae) in vitro shoots4
Influence of titanium dioxide nanoparticles on growth, physiological attributes and essential oil production of Mentha arvensis L.4
Antibacterial potential of extracts from different Brazilian bamboo species4
Molecular basis of salicylic acid–phytohormone crosstalk in regulating stress tolerance in plants4
Fruit morphoanatomy of Astronium Jacq. and Myracrodruon Allemão (Anacardiaceae): taxonomic implications and development of the calycinal wings4
Contrasting leaf cuticular wax composition of Conchocarpus and Dryades species (Rutaceae) from the Atlantic Forest and “Restinga”3
Psidium cattleyanum Sabine (Myrtaceae), a neotropical polyploid complex with wide geographic distribution: insights from cytogenetic and DNA content analysis3
Self-shading effect in the growth, photosynthesis and anatomy of Typha domingensis Pers.3
Esenbeckia (Pilocarpinae, Rutaceae): chemical constituents and biological activities3
Biology and structure of flowers in Adenium obesum (Forssk.) Roem. & Schult. (Apocynaceae) accessions with notes on the significance of these features for floriculture3
Optimization of in vitro micropropagation and root establishment through combinatorial approaches for enhanced production of secondary metabolites in the endangered species Decalepis arayalpathra KMA 3
Infra-specific variation of Acer cappadocicum (Sapindaceae): morphological and molecular approaches3
A compendium of vivipary in the Cactaceae: new reports, data, and research prospects3
Effects of forest succession on the richness and composition of Zingiberales in a forest fragment in the southwestern Amazon3
Effect of salinity on seed germination and seedling growth of bullet cultivar of chilli (Capsicum annuum L.)3
Collection and characterization of banana gene pools (Musa spp.) in Manipur (N.E. India) using PCR–RFLP and RAPD and ISSR markers3
Dynamic alterations of metabolites in Plectranthus amboinicus (Lour.) Spreng. to encounter drought and Zn toxicity3
Living on the edge: composition, biogeography, and conservation of ferns in rocky environments of Southern Amazonia3
Anatomical and biochemical changes in leaves of Vitis labrusca L. cv. Niagara Rosada in response to infection by Elsinoë ampelina Shear3
Global invasibility potential of the shrub Baccharis drancunculifolia3
Ecological assessment and suitability ranges of Ban oak (Quercus oblongata D. Don) in Chamba district, Himalayas: implications for present and future conservation3
2,4-Epibrassinolide mechanisms regulating water use efficiency and fruit production in tomato plants3
Analysis of flavonoids biosynthesis-related genes expression reveals the mechanism of difference of flavonoid content in different tissues of Actinidia arguta3
Reproductive ecology of white cacao (Theobroma bicolor Humb. & Bonpl.) in Ecuador, western Amazonia: floral visitors and the impact of fungus and mistletoe on fruit production3
Net photosynthetic rates of Egeria najas and Utricularia breviscapa changes directed by seasonal hydrological variations3
Pantanal flood pulse reveals constitutive and plastic features of two wild rice species (Poaceae, Oryzoideae): implications for taxonomy, systematics, and phylogenetics3
Drought stress induces changes in the physiology and root system of soybean plants3
The assessment of cadmium nitrate effect on morphological and cytogenetic indices of spring barley (Hordeum vulgare) seedlings3
Response to salt stress of two wetland grasses of forage potentialities3
Molecular cloning and characterization of three CoIDA genes in Camellia oleifera3
Embryological studies in Thinouia mucronata and Serjania meridionalis (Paullinieae, Sapindaceae): development of gametophytes in both floral morphs and its phylogenetic implications3
Reproductive biology and hybridization of Physalis L. species3
Phylogenetic and molecular dating analyses of Catasetum (Orchidaceae) indicate a recent origin and artificial subgeneric groups3
Taxonomic and functional spatial distribution model of phytoplankton in tropical cascading reservoirs3
Assessing the intra-specific competition and its relation with tree structure in a beech forest (Fagus orientalis Lipsky)3
Diversity and structural changes in Cerrado Rupestre under effects of disturbances3
Complete chloroplast genome sequence of Gynostemma guangxiense: genome structure, codon usage bias, and phylogenetic relationships in Gynostemma (Cucurbitaceae)3
Geographic distribution pattern and ecological niche differentiation of endangered Opisthopappus in Taihang Mountains2
Did Moldenhawera flowers evolve through mimicry with oil-producing Malpighiaceae?2
Root system architecture in cereals: exploring different perspectives of the hidden half2
Chemical composition of the essential oil of Myrcia loranthifolia (Myrtaceae) leaves grown in Atlantic Forest and Dry Forest of Brazil2
Complete chloroplast genome of Boesenbergia rotunda and a comparative analysis with members of the family Zingiberaceae2
Pollen morphological traits analysis in the genus Hymenocrater Fisch. & C. A. Mey., (Lamiaceae)2
Dispersal increases beta diversity in periphytic algae communities of subtropical floodplain lakes2
Anatomical changes caused by boron in Calopogonium mucunoides Desv2
Integrated transcriptomic and metabolomic analyses of Caucasian clover (Trifolium ambiguum Bieb.) in response to freezing stress2
Chenopodium album L.: a promising NaCl accumulating and tolerant plant for mitigation of salinity stress2
The complete chloroplast genome of Prunus triloba var. plena and comparative analysis of Prunus species: genome structure, sequence divergence, and phylogenetic analysis2
Structural anomalies in pollen grains of Dyckia racinae L.B.Sm. (Bromeliaceae)2
Floral anatomy of Cupania emarginata, a duodichogamous tree2
Morphological diversity and ecological aspects of Euastrum taxa (Desmidiaceae) associated with macrophytes from a wetland in the semiarid region of Bahia, Brazil2
Aromatic plants: a multifaceted asset2
Ecological niches, endemism and conservation of the species in Selenicereus (Hylocereeae, Cactaceae)2
Growth, nodulation, and anatomical characterization of Calopogonium mucunoides Desv., a tropical legume, in copper-contaminated soil2
Development and characterization of Chlamydomonas reinhardtii low chlorophyll mutants to improve photosynthetic efficiency and biomass2
An efficient virus-induced gene silencing of PDS gene in Solanum lycopersicum (cv. Rio Grande) and its functional analysis2
Phenotypic plasticity of trichomes and stomatal density in Cenostigma microphyllum (Mart. ex G. Don) E. Gagnon and G. P. Lewis (Fabaceae) in a seasonally dry tropical forest, Brazil2
Acylation of flavonol glycosides using protein extracts of Croton species (Euphorbiaceae)2
Glutathione and zinc application upregulate the antioxidant system increasing photosynthetic pigments and growth under water stress in maize (Zea mays L.)2
Germplasm resources and drought resistance evaluation of Siberian wildrye (Elymus sibiricus L.) in the Tibetan Plateau2
Characterization of osmophore activity and secondary metabolite localization in fragrant ephemeral flowers of Murraya paniculata (Linn.) Jack (Rutaceae)2
Genetic diversity of Hesperozygis ringens (Benth.) Epling (Lamiaceae): current situation on natural populations of Rio Grande do Sul, Brazil2
A new map of the chloroplast genome of Hippophae based on inter- and intraspecific variation analyses of 13 accessions belonging to eight Hippophae species2
Functional characterization of chalcone isomerase gene HvCHI revealing its role in anthocyanin accumulation in Hosta ventricosa2
Comparative assessment of leaf photosynthetic traits for improved carbon dioxide fixation in selected tree species of Pachamalai hills2
Genome size and guard cell length are associated in four species of Miconia (Miconieae, Melastomataceae)2
Genome evolution and phylogenetic relationships in Opuntia tehuacana (Cactaceae, Opuntioideae)2
A new species of Chusquea (Poaceae: Bambusoideae: Bambuseae) in the C. meyeriana informal group from southeastern Brazil2
Temperature-sensitive water-responsive shape memory effect in plant leaves2
Review and future prospects on the impact of abiotic stresses and tolerance strategies in medicinal and aromatic plants2
Phylogenetic analysis of Peniocereus (Cactaceae, Echinocereeae) based on five chloroplast DNA markers2
Iron(II) sulfate and pH decrease seed germination and seedling growth and alter nutrient and polyamine contents in Cedrela fissilis Vellozo (Meliaceae)2
Morphology, structure, and histochemistry of the inflorescences, fruit, and seed of the Ramón nut, Brosimum alicastrum Sw. subsp. alicastrum CC Berg (Moraceae)2
Water absorption characteristics and ecological adaptability of Iris hexagona seeds2
Genetic diversity and population structure of natural populations of the endangered grass Paspalum rawitscheri (Parodi) Chase ex G.H. Rua & Valls (Paspaleae, Poaceae)2
Seed oil content and fatty acid composition in natural populations of Tarenaya longicarpa (Cleomaceae) during the dry and rainy seasons in Northeast Brazil2
Screening of a new candidate tree legume- Pithecellobium dulce (Roxb.) Benth., for lead remediation2
Leaf trait variability maintains similar leaf exchange rhythms in Hirtella glandulosa Spreng. (Chrysobalanaceae) populations growing on contrasting soil types in the Brazilian Atlantic Forest2
De novo leaf transcriptome of a triploid linalool chemotype of Lippia alba (Mill.) N.E.Br. ex Britton & P. Wilson2
Influence of the light on the morphophysiological responses of native trees species of the semidecidual stational forest2
Floral visitors of the holoparasite Bdallophytum andrieuxii Eichler: A new report of brood-site pollination and thermogenesis for Cytinaceae (Malvales)2
Supervised learning algorithms in the classification of plant populations with different degrees of kinship2
The relationship between root endophytic microbial of plant species and soil properties in different patches of alpine meadow1
Contribution of spike type and characteristics to the seed yield of Elymus sibiricus L. on Qinghai–Tibetan Plateau1
Improved DNA isolation protocol from leaves and embryos of Terminalia bellirica: a tree species of high-medicinal importance1
In silico genome-wide analysis of Citrus sinensis (L.) Osbeck NHX and KEA genes and their roles in abiotic stress1
Low soil nutrient availability does not decrease post-drought recovery of Brachiaria Mavuno1
Metabolic changes of the red marine alga Gracilariopsis tenuifrons elicited by high PAR in laboratory1
Pollen morphology of selected species of Cucurbitaceae Juss. from the Cerrado1
Understanding molecular relationships in Campomanesia Ruiz & Pav. (Myrtaceae): emphasizing the C. xanthocarpa complex based on multiple accessions1
Genome-wide characterization and expression analysis of cyclic nucleotide-gated ion channels (CNGCs) gene family in Arabidopsis thaliana L. and Helianthus annuus L. for drought stress1
Biosynthesis, functional perspectives, and agricultural applications of strigolactones1
Variable leaf shape on short and long shoots: an elliptic Fourier analysis of Prunus microcarpa C.A.Mey1
Biological studies and chromatograms aided by chemometric analysis in evaluation of seasonality and extraction method of Croton grewioides extracts1
The effects of dark treatment on photosynthesis and growth in young and mature leaves of Syzygium rehderianum1
Aboveground carbon stock in phytophysiognomies of the Southeast Pantanal, Brazil1
Chemical and biological profile of Psidium bahianum landrum & funch (Myrtaceae)1
Non-deep simple morphophysiological dormancy in seeds of Magnolia biondii Pamp.1
Editorial: Diversity and evolution of Neotropical Sapindales1
Ecophysiological trait differences between invasive Lantana camara L. and native Adhatoda vasica Nees. shrubs in the semi-arid region1
Phenology and water relations of treeline species of Western Himalaya, India1
Direct seeding of native fruit tree species with economic benefits in a Brazilian Cerrado managed landscape1
Influence of sewage sludge, Rhizobium and arbuscular mycorrhizal fungi on nutrient uptake, growth, photosynthetic and biochemical attributes in Cicer arietinum L.1
Deciphering the role of the morphophysiology of germination and leaves morphoanatomy for differentiation of Brazil nut genotypes1
Dynamic reproductive plasticity in response to emergence time and population density in Abutilon theophrasti (Malvaceae)1
Pulvinus and petiole comparative anatomy in a species of Mimosa with slow nyctinastic leaf movement1
Intracellular trehalose modulates oxidative responses and dehydrin gene expression in Arabidopsis thaliana (L.) Heynh during dehydration1
Current knowledge of the occurrence and distribution of Sapindales in Brazil: a data synthesis from the Brazilian Flora 2020 project1
Effect of calcium on improving zinc tolerance in hydroponically grown Mentha longifolia L. through modulation of metabolic pathways and ion homeostasis1
Symbiotic bacteria associated with legume tree species in a Mexican tropical dry forest1
Study of glutathione S-transferase (CqGSTs) gene expression patterns, the response of basic helix–loop–helix (bHLH) transcription factor and genome-wide identification gene family in quinoa (Chenopodi1
Overexpression of sucrose synthase enhances cellulose content in transgenic Populus deltoides Bartr. ex Marsh1
Vegetative reproduction in Pinguicula heterophylla (Lentibulariaceae): differential role of aboveground and belowground biomass1
Genetic and signaling pathways of flowering regulation in rice (Oryza sativa L.)1
Anatomical plasticity and starch allocation in an invasive grass in response to fire1
Physiological, biochemical and nutritional aspects in Schizolobium parahyba var. amazonicum (Huber ex Ducke) plants under different zinc supplies1
Allometry of two columnar cacti in a tropical deciduous forest1
A reliable DNA extraction protocol for the medicinal plant Chrysobalanus icaco (Chrysobalanaceae), a recalcitrant species1
Treatment with auxin and paclobutrazol mediates ROS regulation, antioxidant defence system and cell wall response in salt treated soybean1
Ecophysiology and morphology of seed germination and seedling emergence of Combretum lanceolatum Pohl ex Eichler1
Cloning and expression analysis of key genes for lignin synthesis in Cucurbita pepo L.1
Connectivity value of Atlantic forest fragments: pathways towards enhancing biodiversity conservation1
Correction to: Foliar fertilization with micronutrients improves Stevia rebaudiana tolerance to salinity stress by improving root characteristics1
Nitrogen accumulated and biologically fixed by uninoculated Anadenanthera peregrina (L.) Speg trees under monospecific stands in the Atlantic Forest biome1
Utilizing genetic diversity to select tomato lines tolerant of tomato yellow leaf curl virus based on genotypic coefficient of variation, heritability, genotypic correlation, and multivariate analyses1
Nitrogen stress alters trade-off strategies between reproduction and vegetative growth in soybean1
Radio-sensitivity of diverse tomato genotypes with respect to optimization of gamma irradiation dose1
Diversity of seed-coat structure and thickness among six genera representing tribes Sophoreae, Crotalarieae, and Genisteae (Papilionoideae, Fabaceae) in Egypt1
Anatomical characteristics of the upland local Indonesian rice cultivars as structural protection against drought1
Woody plants phenology of the coastal dunes in eastern Amazon, Brazil1
Tree-ring dating of the common trees in Wadi Allaqi Biosphere Reserve, South-East Egypt1
First report on genome size and ploidy determination of five indigenous coffee species using flow cytometry and stomatal analysis1
Reduction of PSII photosynthetic performance by low temperature is the reason for the growing inhibition of Kobresia pygmaea Clarke1
Detailed dynamics analysis of net nitrate uptake by wheat roots after sucrose signal molecule treatment1
Salicylic acid alleviates tidal flooding and salinity toxicity on Barringtonia racemosa seedlings by activating the stress defense mechanism1
Richness, distribution, and endemism of neotropical subtribe Ponerinae (Orchidaceae, Epidendreae)1
Sorgoleone unveiled: exploring its biosynthesis, functional perspectives and applications1
The phenylalanine ammonia-lyase gene McPAL3: the key gene involved in the scopoletin accumulation of Morinda citrifolia L.1
Cloning, characterization and prokaryotic expression analysis of two phenylalanine ammonia-lyase genes from Peucedanum praeruptorum Dunn1
Macro- and micromorphological characterization of staminodes in the Plains Prickly Pear Opuntia polyacantha Haw. (Cactaceae)1
Biostimulant potential of Brazilian macroalgae: seasonal variations and effects on early growth and germination of lettuce1
Reproductive phenology in the standardization of tannins in plant drugs of specimens of Sideroxylon obtusifolium (Roem. & Schult.) T.D. Penn1
Effect of glyphosate on morphological, physiological and mitotic parameters of Vigna radiata varieties IPM 02-03 and IPM 02-141
Anatomical features of pollinia and caudicle in Epidendrum (Orchidaceae; Epidendroideae)1
Different induction of biogenic amine accumulation during cold acclimation in Triticeae genotypes with varying freezing tolerance1
Floral biology of two woody species of Dalbergia at high risk of timber extraction1
Anatomical traits in pine stems, the first step to define grafting combinations?1
Predicting the potential geographical distribution of Osyris quadripartita Decn. (Santalaceae) in Ethiopia under climate change scenarios1
Plants of the Serra do Mucambo: a checklist of a remnant of deciduous seasonal forest within the Caatinga domain in Bahia, Brazil1
Genotypic and phenotypic diversity of heat tolerance among and within perennial ryegrass (Lolium perenne L.)1
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