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Acclimatization and leaf anatomy of micropropagated fig plantlets Rev. Bras. Frutic.
Chirinéa,Chrystiane Fráguas; Pasqual,Moacir; Araujo,Aparecida Gomes de; Pereira,Alba Regina; Castro,Evaristo Mauro de.
The survival of micropropagated plants during and after acclimatization is a limiting process to plant establishment. There is little information on how the anatomy of vegetative organs of Ficus carica can be affected by culture conditions and acclimatization. The present research aimed to study the effects of time on culture medium and substrates during the acclimatization of fig tree plantlets produced in vitro, characterizing some leaf anatomy aspects of plantlets cultured in vitro and of fig trees produced in field. Plantlets previously multiplied in vitro were separated and transferred into Wood Plant Medium (WPM) where they were kept for 0, 15, 30, 45 and 60 days. Different substrates were tested and studies on leaf anatomy were performed in order to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ficus carica L.; Substrate; Stomata; Parenchyma.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452012000400027
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Anatomia foliar de ipê-branco (Tabebuia roseo Alba (Ridl.) Sand.) – Bignoniaceae, proveniente do cultivo ex vitro e in vitro - DOI: 10.4025/actascibiolsci.v31i3.1937 Biological Sciences
Abbade, Leticia Caravita; UFLA; Paiva, Patrícia Duarte de Oliveira; UFLA; Paiva, Renato; UFLA; Castro, Evaristo Mauro de; UFLA; Centofante, Agda Rabelo; UFLA; Oliveira, Cynthia de; UFLA.
Este estudo teve como objetivo comparar a estrutura interna de folhas de ipê-branco cultivadas in vitro e ex vitro. Para as avaliações anatômicas foram utilizadas folhas do primeiro nó de ramos, da base para o ápice, com 30 dias de cultivo in vitro e de plantas de campo. O estudo anatômico foi feito por meio das secções transversais e paradérmicas das folhas. As folhas apresentam epiderme uniestratificada e mesofilo dorsiventral. São hipostomáticas e apresentam tricomas em todas as faces. Folhas de plantas cultivadas ex vitro, quando comparadas com in vitro, tiveram espessura do limbo foliar, nervura central da epiderme adaxial e abaxial e os parênquimas paliçádico e esponjoso maiores. Em folhas oriundas do cultivo in vitro, a cutícula e o esclerênquima...
Palavras-chave: 2.00.00.00-6 Ciências Biológicas anatomia; Folhas; Estômatos; Nervura central; In vitro; Ex vitro Anatomia vegetal anatomy; Leaves; Stomata; Central nervure; In vitro; Ex vitro.
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1937
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Aspectos morfofisiologicos das cultivares de cafeeiro Catuai-Vermelho e Conilon. Repositório Alice
CARVALHO, L.M. de; SILVA, E.A.M. da; AZEVEDO, A.A.; MOSQUIM, P.R.; CECON, P.R..
O objetivo deste trabalho foi comparar cafeeiros das espécies Coffea arabica L. cv. Catuaí-Vermelho e C. canephora Pierre cv. Conilon quanto à fotossíntese líquida e a aspectos da anatomia foliar a esta relacionados. Verificaram-se taxas fotossintética líquida, transpiratória e de condutância estomática maiores em plantas de C. canephora. As plantas de C. arabica apresentaram menor eficiência do sistema "antena", e folhas menores, porém mais espessas. As duas espécies diferiram, ainda, quanto ao tipo, dimensões e número dos estômatos presentes na epiderme foliar: paracíticos em C. arabica e actinocíticos em C. canephora, e maiores, mas em menor número, em C. arabica.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Coffea arabica; Coffea canephora; Fotossintese; Estomato; Anatomia vegetal; Reacoes bioquimicas; Photosynthesis; Stomata; Plant anatomy; Biochemical reactions.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/handle/doc/103730
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Aspects of leaf anatomy of Kudzu (Pueraria lobata, Leguminosae-faboideae) related to water and energy balance. Repositório Alice
PEREIRA-NETTO, A.B. de; GABRIELE, A.C.; PINTO, H.S..
Kudzu is a cover crop that has escaped cultivation in some subtropical and warm temperate regions. Kudzu has previously demonstrated broad intraspecific physiological plasticity while colonizing new environments. The objective of this paper was to investigate characteristics of kudzu leaflet anatomy that might contribute to its successful growth in climatically distinct environments, and to escape cultivation as well. Fresh and fixed leaflet strips of field-grown plants were analyzed. The lower epidermis of kudzu showed a higher frequency of stomata (147 +- 19 stomata mm-2) than the upper epidermis (26 +- 17 stomata mm-2). The average number of trichomes per square milimeter was 8 for both the upper and the lower epidermis. The average trichome length was...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cuticle thickness; Ecophysiology; Leaflet anatomy; Stomata; Trichomes; Anatomia de foliolos; Tricomas; Ecofisiologia; Espessura de cuticula; Estomatos.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/100687
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Aspects of leaf anatomy of kudzu (Pueraria lobata, Leguminosae-Faboideae) related to water and energy balance PAB
Pereira-Netto,Adaucto Bellarmino de; Gabriele,Antonio Carlos; Pinto,Hilton Silveira.
Kudzu is a cover crop that has escaped cultivation in some subtropical and warm temperate regions. Kudzu has previously demonstrated broad intraspecific physiological plasticity while colonizing new environments. The objective of this paper was to investigate characteristics of kudzu leaflet anatomy that might contribute to its successful growth in climatically distinct environments, and to escape cultivation as well. Fresh and fixed leaflet strips of field-grown plants were analyzed. The lower epidermis of kudzu showed a higher frequency of stomata (147 ± 19 stomata mm-2) than the upper epidermis (26 ± 17 stomata mm-2). The average number of trichomes per square milimeter was 8 for both the upper and the lower epidermis. The average trichome length was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cuticle thickness; Ecophysiology; Leaflet anatomy; Stomata; Trichomes.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000800006
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Aspects of leaf anatomy of tropical kudzu related to water and energy balance. Repositório Alice
NETTO, A. B. de P.; GABRIELE, A. C.; PINTO, H. S..
No Brasil, a pecuaria (Pueraria phaseoloides Benth, Leguminosae-Faboideae) e tradicionalmente empregada como cultura de cobertura em seringais na regiao amazonica, onde as condicoes climaticas se assemelham as condicoes climaticas tropicais encontradas no sudoeste asiatico, centro de dispersao da especie. Pueraria foi tambem introduzida na regiao sudeste do Brasil, regiao esta caracterizada pela transicao entre os climas tropical e subtropical. Este trabalho teve como objetivo descrever algumas caracteristicas da anatomia foliar de pueraria relacionadas a economia de agua e energia. A epiderme inferior apresentou maior frequencia de estomatos (213 estomatos mm2) quando comparada a epiderme superior (101 estomatos mm2). O numero medio de tricomas por...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Espessura da cuticula; Anatomia de foliolos; Tricomas; Ecofisiologia; Estomatos; Cuticle thickness; Ecophysiology; Leaflet anatomy; Stomata; Trichomes.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/handle/doc/86250
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Caracterización química y estomática y crecimiento de tallos de Acanthocereus tetragonus, A. Subinermis e Hylocereus undatus. Colegio de Postgraduados
Juárez Cruz, Aída.
Entre las especies con potencial productivo, sobresalen la cruceta o jacube (Acanthocereus tetragonus), el nopal de cruz (Acanthocereus subinermis) y la pitahaya (Hylocereus undatus.) porque tienen uso como cerco vivo, ornamento, medicina y alimento en diferentes regiones de México. Sin embargo, existe poca información sobre el valor nutritivo y características anatómicas de éstos materiales, principalmente del género Acanthocereus; por lo anterior, la presente investigación tuvo como objetivo generar información que permita sustentar el uso de tallos jóvenes de estas especies como parte de la dieta humana, y también conocer aspectos anatómicos que pueden ser útiles en su manejo agronómico. La investigación se realizó en un huerto ubicado en Tepoztlán,...
Palavras-chave: Jacube; Cruceta; Nopal de cruz; Pitahaya; Análisis proximal; Estomas; Proximal analysis; Stomata; Maestría; Fisiología Vegetal.
Ano: 2011 URL: http://hdl.handle.net/10521/375
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Chromosomal and morphological studies of diploid and polyploid cytotypes of Stevia rebaudiana (Bertoni) Bertoni (Eupatorieae, Asteraceae) Genet. Mol. Biol.
Oliveira,Vanessa M. de; Forni-Martins,Eliana R.; Magalhães,Pedro M.; Alves,Marcos N..
In this study, we examined the chromosome number and some morphological features of strains of Stevia rebaudiana. The chromosomes were analyzed during mitosis and diakinesis, and the tetrad normality and pollen viability were also assessed. In addition, stomata and pollen were measured and some plant features were studied morphometrically. All of the strains had 2n = 22, except for two, which had 2n = 33 and 2n = 44. Pairing at diakinesis was n = 11II for all of the diploid strains, whereas the triploid and tetraploid strains had n = 11III and n = 11IV, respectively. Triploid and tetraploid plants had a lower tetrad normality rate than the diploids. All of the strains had inviable pollen. Thus, the higher the ploidy number, the greater the size of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Pollen; Polyploidy; Stevia rebaudiana; Stevioside; Stomata.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000200015
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CO2 assimilation, photosynthetic light response curves, and water relations of 'Pêra' sweet orange plants infected with Xylella fastidiosa Braz. J. Plant Physiol.
Habermann,Gustavo; Machado,Eduardo Caruso; Rodrigues,João Domingos; Medina,Camilo Lázaro.
Plants with citrus variegated chlorosis (CVC), a disease caused by the xylem-limited bacteria Xylella fastidiosa, have leaves with water deficiency symptoms and are associated with decreases on the net photosynthesis and transpiration rates. Using healthy and CVC-affected 'Pêra' sweet orange plants on 'Rangpur' lime rootstock, the leaf gas exchange variables were measured with an open-gas portable photosynthesis system. All plants were watered and the leaf water potential (Yw) was measured by isopiestic thermocouple psychrometric technique. The net photosynthesis (A) vs. internal leaf CO2 concentration (A/Ci curves) was analyzed. The relative effect of stomatal resistance on photosynthesis (S%) and the estimation of carboxylation efficiency were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: A/Ci curves; Citrus variegated chlorosis; Citrus sinensis L. Osbeck; Photosynthetic photon flux density; Photosynthetic metabolism; Stomata.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000200003
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Coffee leaf and stem anatomy under boron deficiency Rev. Bras. Ciênc. Solo
Rosolem,Ciro Antonio; Leite,Vagner Maximino.
Boron deficiency in coffee is widely spread in Brazilian plantations, but responses to B fertilizer have been erratic, depending on the year, form and time of application and B source. A better understanding of the effects of B on plant physiology and anatomy is important to establish a rational fertilization program since B translocation within the plant may be affected by plant anatomy. In this experiment, coffee plantlets of two varieties were grown in nutrient solutions with B levels of 0.0 (deficient), 5.0 µM (adequate) and 25.0 µM (high). At the first symptoms of deficiency, leaves were evaluated, the cell walls separated and assessed for B and Ca concentrations. Scanning electron micrographs were taken of cuts of young leaves and branch tips. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Boron deficiency; Ca/B ratio; Coffee nutrition; Stomata.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832007000300007
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COMPARATIVE FOLIAR EPIDERMAL MORPHOLOGY OF THE WEST AFRICAN SPECIES OF THE GENUS AFZELIA SMITH (LEGUMINOSAE: AESALPINIOIDEAE) Gayana Botánica
Babalola Kadiri,Akeem; Dele Olowokudejo,James.
The epidermal features of the leaves of the six West African species of Afzelia were examined and compared using light and scanning electron microscopy. The leaves are hypostomatic in all species and stomatal type is paracytic. Anticlinal walls may be undulate or straight-curved and stomatal index ranges from 17.48% in A. bella var. gracilior to 25.20% in A. bipindensis. Porrect and flattened scales distinguish the infra-specific taxa of A. bella while presence of unicellular trichomes separates A. pachyloba from other species. The leaf surface is entirely covered by epicuticular wax deposits and the stomata are either raised or sunken in the genus. Using these foliar epidermal characters, an artificial key has been prepared to facilitate identification of...
Tipo: Journal article Palavras-chave: Afzelia; Stomata; Epidermal cell; Morphology; Taxonomy.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432008000100008
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Comparative morphology on leaves of Daphniphyllum (Daphniphyllaceae) Naturalis
Tang, M.-S.; Yang, Y.-P.; Sheue, C.-R..
A comparative anatomical study on the leaves of nine out of 29 species of the genus Daphniphyllum was performed to seek support for the present infrageneric classification. Daphniphyllum is composed of two sections, Lunata (with one subsection Lunata) and Daphniphyllum (with two subsections, Daphniphyllum and Staminodia). The glabrous leaves with brachyparacytic stomata appear in all species in this study; hemiparacytic, laterocytic or anomocytic stomata occur in some taxa. Two (out of three) species of section Lunata show irregular epidermal cells with undulate anticlinal walls on both surfaces and hemiparacytic stomata. Of section Daphniphyllum seven (out of 26) species were sampled; they have curved, straight or undulate anticlinal cell walls and...
Tipo: Article / Letter to the editor Palavras-chave: Daphniphyllaceae; Daphniphyllum; Epidermis; Leaf anatomy; Lunata; Stomata.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/524761
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Comparative stomatal conductance and chlorophyll a fluorescence in leaves vs. fruits of the cerrado legume tree, Dalbergia miscolobium Braz. J. Plant Physiol.
Lemos Filho,José Pires de; Isaias,Rosy Mary dos Santos.
The aim of this study was to compare water vapor conductance and chlorophyll a fluorescence between leaflets and fruits of Dalbergia miscolobium, the Jacaranda tree. The frequency of stomata on the leaflets was 20 times higher than that observed on the fruits, and this was related with the lower conductance of the fruits in comparison with the leaflets. The potential quantum yield of PSII (Fv /Fmax) was significantly lower in fruits than in leaflets. The Fv /Fmax values for leaflets increased to over 0.8 during the afternoon, indicating the occurrence of dynamic photoinhibition. In contrast, Fv /Fmax values for fruits remained low even at early morning, indicating the occurrence of chronic photoinhibition. The maximum values of effective quantum yield...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Jacaranda tree; Stomata; Quantum efficiency of PSII; Water vapor conductance.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000200004
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Comportamento estomatico de plantas de timbo (Derris urucu) submetidas a diferentes níveis de luz. Repositório Alice
QUADROS, M. R.; REIS, M. C.; ROCHA NETO, O. G. da.
bitstream/item/206043/1/Comportamento-estomatico-de-plantas.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Comportamento estomatico; Derris urucu; Pesticide crops; Fisiologia Vegetal; Planta Produtora de Pesticida; Timbó; Plant physiology; Stomata.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/395113
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Differential capacity of nitrogen assimilation between apical and basal leaf portions of a tank epiphytic bromeliad Braz. J. Plant Physiol.
Takahashi,Cassia A.; Ceccantini,Gregório C.T.; Mercier,Helenice.
The leaf is the main organ of the vegetative body of tank epiphytic bromeliads, which may be subdivided into apical and basal parts. Little is known about the existence of morphological, anatomical or physiological differences between these two leaf portions. The objective of this study was to verify the existence of a differential capacity to assimilate nitrogen from urea between basal and apical leaf portions of Vriesea gigantea, a tank epiphytic bromeliad. Plants were cultivated in vitro in the presence of 5 mM urea for 15 days. During this period, the activities of the enzymes glutamine synthetase (GS, EC 6.3.1.2) and NADH-dependent glutamate dehydrogenase (NADH-GDH, EC 1.4.1.2) were quantified, as well as the densities of trichomes and stomata found...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bromeliaceae; Glutamate dehydrogenase; Glutamine synthetase; Stomata; Trichome; Urea.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000200004
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Efeitos de substâncias húmicas na resistência estomática, fotossíntese e transpiração do feijoeiro (Phaseolus vulgaris L.). Repositório Alice
SOUZA, N. J. T. A.; COSTA, C. A. C.; ROCHA NETO, O. G. da.
bitstream/item/205287/1/Efeitos-de-substancias-humicas-na.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Substância húmica; Transpiração; Resistência estomatica; Composto Orgânico; Feijão; Fotossíntese; Metabolismo Energético; Energy metabolism; Kidney beans; Organic compounds; Photosynthesis; Stomata; Transpiration.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/399181
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Effects of changes in the photosynthetic photon flux density on net gas exchange of Citrus limon and Nicotiana tabacum Braz. J. Plant Physiol.
Pimentel,Carlos; Ribeiro,Rafael Vasconcelos; Santos,Mauro Guida dos; Oliveira,Ricardo Ferraz de; Machado,Eduardo Caruso.
The objective of this study was to evaluate the effects of changes in the photosynthetic photon flux density (PPFD) on net gas exchange of Citrus limon, a woody species, and Nicotiana tabacum, an herbaceous species. When PPFD was increased from 50 to 350 mumol.m-2.s-1 and returned to 50 mumol.m-2.s-1 after 60 min, the CO2 assimilation rate (A) increased and stabilized after 15 min in both species. Stomatal conductance (g s), however, continued to increase. After returning to low PPFD, A immediately diminished to a low value for both lemon and tobacco. Stomatal conductance of lemon diminished slowly over 60 min, whereas g s for tobacco took only 15 min to decrease. This difference in behavior is probably due to over-sensitivity of stomata of woody species,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: CO2 assimilation rate; Gas exchange; Stomata; Intrinsic water use efficiency.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000200002
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Epidermal characteristics of toxic plants for cattle from the Salado River basin (Buenos Aires, Argentina) Boletín de la Sociedad
Freire,Susana E.; Arambarri,Ana M.; Bayón,Néstor D.; Sancho,Gisela; Urtubey,Estrella; Monti,Claudia; Novoa,María C.; Colares,Marta N..
One hundred and eighty species belonging to 41 families inhabiting the Salado River Basin of the province of Buenos Aires (Argentina) were previously reported to be toxic for cattle. The purpose of this study was to provide a tool to distinguish the taxa when the plant material is desintegrated. In this way, an approach to the identification of these taxa through leaf epidermal features (anticlinal epidermal cell wall patterns, cuticular ornamentation, stomata, and hair types) is performed. A key to the 180 species as well as illustrations of diagnostic characters are given.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Buenos Aires; Salado River Basin; Toxic plants; Anatomy; Epidermal characters; Stomata; Hairs; Dicotyledons; Monocotyledons.
Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722005000200010
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Estádio de desenvolvimento e superfície foliar reduzem a eficiência de Chlorimuron-ethyl e Glyphosate em Conyza sumatrensis. Repositório Alice
SANTOS, F. M.; VARGAS, L.; CHRISTOFFOLETI, P. J.; AGOSTINETTO, D.; MARTIN, T. N.; RUCHEL, Q.; FERNANDO, J. A..
Nos Estados do Rio Grande do Sul e do Paraná, há frequentes relatos de falhas decontrole de Conyza sumatrensis com chlorimuron-ethyl em lavouras de soja. Caracteriza morfologicamente as folhas de Conyza sumatrensis e avalia o controle com herbicidas aplicados em biótipos dessa planta daninha em três estádios de desenvolvimento. Foram realizados dois estudos, com experimentos em casa de vegetação, em delineamento inteiramente casualizado com quatro repetições. No primeiro estudo, os biótipos de buva foram coletados e identificados; já no segundo estudo avaliou-se a resposta de biótipos aos herbicidas, doses e estádios de desenvolvimento. As doses de herbicidas foram: 0,0; 6,25; 12,5; 25; 50; 100; 200; e 400, representadas em porcentagem da dose de registro...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Planta daninha; Buva; ALS; EPSPs; Tricomas; Estômatos; Horseweed; Weed; Trichomes; Stomata.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1005063
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Estimadores de fotosíntesis en selecciones de zapote mamey (Pouteria sapota (Jacq.) H. E. Moore & Stearn). Colegio de Postgraduados
Ledesma Miramontes, Alejandro.
En frutales, debido a que no es práctico eliminar toda la planta para evaluar fotosíntesis es necesario utilizar estimadores para este proceso. Con el fin de conocer las diferencias que existen en la actividad fotosintética en seis selecciones injertadas de zapote mamey se evaluaron diferentes estimadores. La investigación se llevó a cabo en una huerta comercial en el municipio de Alpoyeca Gro. Se utilizaron árboles de 3 y 4 años. Las variables evaluadas fueron: peso específico de la hoja (PEH), grosor de la hoja, frecuencia y tamaño de estomas, contenido de clorofila, concentración de azúcares y medición del intercambio de gases. El diseño experimental utilizado, fue completamente al azar, con diferente número de repeticiones dependiendo de la variable....
Palavras-chave: Pouteria sapota; Sapotaceae; Grosor de hoja; Estomas; Azúcares; Leaf thickness; Stomata; Sugars; Maestría; Fruticultura.
Ano: 2011 URL: http://hdl.handle.net/10521/411
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