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Search Results: 1 - 10 of 16174 matches for " Luiza Sumiko;Castro "
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Coléteres foliares e calicinais de Temnadenia violacea (Apocynaceae, Apocynoideae): estrutura e distribui??o
Martins, Fabiano Machado;Kinoshita, Luiza Sumiko;Castro, Marilia de Moraes;
Brazilian Journal of Botany , 2010, DOI: 10.1590/S0100-84042010000300011
Abstract: (foliar and calycine colleters of temnadenia violacea (apocynaceae, apocynoideae): structure and distribution). the present work describes the origin, structure and position of the colleters on vegetative and floral apices of temnadenia violacea (vell.) miers and confirms the presence of mucilage in the secretion produced by those structures. the number of foliar colleters ranges from 9 to 11 per primordium and from 18 to 22 per node; only one has an axilar origin, while the others originate along the margins. concerning position, five of them are petiolar and the others are interpetiolar. there are two types of foliar colleters: standard and sessile, and they consist of a main body composed of a central core of elongated parenchyma cells surrounded by a secretory palisade epidermis and a thin cuticle. tector trichomes and vascular tissue occur only on the distal marginal colleters. on the floral apices, the calycine colleters are formed at the base of the calyx, three of them opposite the sepals. all of the calycine colleters have a central core of elongated parenchyma cells, a secretory palisade epidermis, a thin cuticle, and are sessile. the calycine colleters are not vascularized and the laticifers are narrow. mucilage was detected in the secretion of both foliar and calycine colleters.
Laticíferos articulados anastomosados: novos registros para Apocynaceae
Demarco, Diego;Kinoshita, Luiza Sumiko;Castro, Marília de Moraes;
Brazilian Journal of Botany , 2006, DOI: 10.1590/S0100-84042006000100012
Abstract: laticifer presence is universal in apocynaceae, in the classic literature the type described for this family is the non-articulated. later researches have proved the occurrence of articulated laticifers only in four species, giving rise to controversies on their origin. the results obtained in our studies differ from those reported for most species of this family. in both aspidosperma australe müll. arg. (rauvolfioideae) and blepharodon bicuspidatum fourn. (asclepiadoideae), the laticifers are of the articulated anastomosing type because they are formed by adding cells with rapidly dissolving transverse walls. laticifers originate from ground meristem and/or procambium and form a branched system, they are in secretory phase since the early stages of formation in different organs, releasing latex only when the plant is damaged. the laticifer walls are exclusively pectic-cellulosic and their chemical characteristics probably change during their development. vegetative organ laticifers occur in all stem and leaf tissues, except epidermis and medullary parenchyma of a. australe. in the flower, laticifers are found in all floral organs, except in the medullary parenchyma of the pedicel of a. australe and in the ovules of both species. the presence of the same type of laticifer in these two genera, which represent the most divergent subfamilies within the apocynaceae corroborates the current circumscription of this family. the latex has protective function, allowing the species of this family to succeed in different environments.
Hemisincarpia e nectário apendicular enfocados através de ontogênese floral em Mandevilla velame (A. St.-Hil.) Pichon, Apocynoideae
Gomes, Sueli Maria;Kinoshita, Luiza Sumiko;Castro, Marília de Moraes;
Brazilian Journal of Botany , 2008, DOI: 10.1590/S0100-84042008000100009
Abstract: mandevilla velame (a. st.-hil.) pichon is a subshrub with a peculiar albo-lanuginose indument and white showy flowers. the meaning of this work is to contribute for the morphologic knowledge of this species. developmental stages of their flowers had been registered in scanning electron microscopy - sem. sepals initiation is unidirectional spiraled dextrorse, composing the quincuncial aestivation. the petals and staminal primordia initiated in a pentagonal dome. before the closure of the corolla, their lobes overlap in imbricate dextrorse aestivation. the staminal primordia are initially presented as convex-rounded domes, later they become ovate and filament elongates by intercalate growth. the gynoecium formed is hemisyncarpic with a congenitally connate base. it is argued on the mixed origin of the gynoecium and the " secondary apocarpy" pointed out for the family is questioned and a new ontogenetic pattern is proposed. the nectary is appendicular, it being constituted of a ring deeply pentalobed and congenitally adnate to the ovary. this result differs from that one related for the other specie of this genus. methodological adaptations for sem studies are presented.
As Apocynaceae s. str. da regi?o de Bauru, S?o Paulo, Brasil
Koch, Ingrid;Kinoshita, Luiza Sumiko;
Acta Botanica Brasilica , 1999, DOI: 10.1590/S0102-33061999000100007
Abstract: the present study describes a survey of the apocynaceae in different types of vegetation, in the region of bauru, in the center-west of s?o paulo state. of the 25 species encountered, distributed into 15 genera, representation ranges as follows: forsteronia g. mey, five species; aspidosperma mart., four species; mandevilla lindl., three species; prestonia r. br., two species; and condylocarpon desf., hancornia gomez, himatanthus willd. ex roem. et schult., macrosiphonia müll. arg., mesechites müll. arg., odontadenia benth, peltastes woodson, rhodocalyx müll arg., secondatia a. dc., tabernaemontana l. and temnadenia miers, one species each. in addition to both distribution data, and flowering and fruiting times, identifications keys, descriptions and illustrations of the species are presented.
As Apocynaceae da regi?o de Po?os de Caldas, Minas Gerais, Brasil
Vasconcellos, Marina Bragatto;Gouvea, Luiza Sumiko Kinoshita;
Acta Botanica Brasilica , 1993, DOI: 10.1590/S0102-33061993000100006
Abstract: a floristic study of the family apocynaceae im po?os de caldas was carried out, since the family is well represented in the region and many species have phytochermical and ornamental value. the family is represented by 17 species distributed in 8 genera: aspidosperma mart e zucc., condylocarpon desf., forsteronia g.f.w. mey., macrosiphonia muell. arg., mandevilla lindl., peltastes r.e. woodson, prestonia r. br. and rauvolfia l.
Flora arbustivo-arbórea do fragmento de floresta estacional semidecidual do Ribeir?o Cachoeira, município de Campinas, SP
Santos, Karin dos;Kinoshita, Luiza Sumiko;
Acta Botanica Brasilica , 2003, DOI: 10.1590/S0102-33062003000300001
Abstract: an inventory of the woody flora (trees and shrubs), was carried out in the ribeir?o cachoeria forest (233.7ha, 650m high, 46°55'58''w, 22°50'13''s), the second largest and best conserved fragment of semideciduous tropical forest in the municipality of campinas, s?o paulo state, southeastern brazil. the soil is a red-yellow podsol and the climate is of k?ppen's cwag type. collections were made from august/1996 to september/1997. only fertile individuals with a perimeter at breast height of 9cm or greater were included in the survey. one hyndred and seventhy five species were identified, belonging to 119 genera and 49 families. the most important families were myrtaceae (14 species), rutaceae and fabaceae (13), caesalpiniaceae (11), solanaceae (9), and rubiaceae (8). some species were found for the first time in the region: tachigali multijuga benth. and schoepfia brasiliensis a.dc. the flowering peak for most species was from august to october. maximum fruit production was from august to november. most species are zoochoric (58%), but 23% were anemochoric and 19% autochoric. the floristic composition of this forest and another 20 forests from s?o paulo state were compared. the results obtained indicate the existence of distinct groups of forests. the most homogeneus group contains forests from the municipality of campinas with similarity of 40%. this suggests that these forests are possibly fragments of a original continuous forest in the campinas region.
Produ??o primária de Pterocladia capillacea (Gelidiaceae - Rhodophyta)
Kinoshita, Luiza Sumiko;Teixeira, Clóvis;
Boletim do Instituto Oceanográfico , 1979, DOI: 10.1590/S0373-55241979000200004
Abstract: primary production in pterocladia capillacea was measured by means of oxygen evolution (winkler's method) under controlled conditions. the method which utilizes light and dark bottles in studies of productivity in phytoplankton has been adapted for the estimation of primary production in macroscopic benthic algal. satisfactory results were obtained when 1.0 ml by volume of alga in a 270 ml bottle at 24.0 to 28.0oc was ilvminated at an incandescent light intensity of 40.0 klux for a period of 2 hours. this method should be applicable to other algal of similar morphology to p. capillacea.
Produ??o primária de Pterocladia capillacea (Gelidiaceae - Rhodophyta)
Kinoshita, Luiza Sumiko;Teixeira, Clóvis;
Brazilian Journal of Oceanography , 1979, DOI: 10.1590/S1679-87591979000200004
Abstract: primary production in pterocladia capillacea was measured by means of oxygen evolution (winkler's method) under controlled conditions. the method which utilizes light and dark bottles in studies of productivity in phytoplankton has been adapted for the estimation of primary production in macroscopic benthic algal. satisfactory results were obtained when 1.0 ml by volume of alga in a 270 ml bottle at 24.0 to 28.0oc was ilvminated at an incandescent light intensity of 40.0 klux for a period of 2 hours. this method should be applicable to other algal of similar morphology to p. capillacea.
Flora arbustivo-arbórea do fragmento de floresta estacional semidecidual do Ribeir o Cachoeira, município de Campinas, SP
Santos Karin dos,Kinoshita Luiza Sumiko
Acta Botanica Brasilica , 2003,
Abstract: Foi realizado inventário florístico das árvores e arbustos da mata Ribeir o Cachoeira (233,7ha, altitude 650m, coordenadas 46°55'58''W, 22°50'13''S), o segundo maior e mais bem conservado fragmento de floresta estacional semidecidual do município de Campinas, SP. O solo característico é o Podzólico Vermelho Amarelo e o clima é Cwag' de K ppen. As coletas foram feitas durante o período de agosto/1996 a setembro/1997. Foram incluídos apenas indivíduos férteis com perímetro a altura do peito igual ou superior a 9cm. Foram encontradas 175 espécies de 119 gêneros e 49 famílias. As famílias mais ricas foram Myrtaceae (14 espécies), Rutaceae e Fabaceae (13), Caesalpiniaceae (11), Solanaceae (9) e Rubiaceae (8). Algumas espécies foram encontradas pela primeira vez na regi o: Tachigali multijuga Benth. e Schoepfia brasiliensis A.DC. A flora o foi maior entre agosto e outubro. A frutifica o foi maior nos meses de agosto a novembro. A maioria das espécies encontradas é zoocórica (58%), as anemocóricas foram 23% e as autocóricas 19%. Compararam-se as rela es florísticas desta mata com outros 20 levantamentos do Estado. Os resultados obtidos indicaram a forma o de dois grupos distintos. O mais homogêneo deles inclui as florestas do município de Campinas, mostrando que, possivelmente, s o remanescentes de uma vegeta o originalmente contínua.
The Apocynaceae s. str. of the Carrancas Region, Minas Gerais, Brazil
André Sim?es Olmos,Luiza Kinoshita Sumiko
Darwiniana , 2002,
Abstract: Los propósitos del siguiente trabajo son identificar y caracterizar las especies de Apocynaceae s. str. nativas en la región de Carrancas, Estado de Minas Gerais, Brasil. Las colecciones fueron realizadas entre 1997 y 2000; y colecciones previas, representativas de la flora regional, también fueron estudiadas. El estudio florístico indicó la presencia de 31 especies distribuidas en 15 géneros: Aspidosperma (5 spp.), Condylocarpon (1 sp.), Forsteronia (3 spp.), Hancornia (1 sp.), Macrosiphonia (2 spp.), Mandevilla (9 spp.), Mesechites (1 sp.), Peltastes (1 sp.), Prestonia (2 spp.), Rauvolfia (1 sp.), Rhabdadenia (1 sp.), Rhodocalyx (1 sp.), Secondatia (1 sp.), Tabernaemontana (1 sp.) y Temnadenia (1 sp.). Además de una breve discusión sobre los caracteres morfológicos más relevantes, se presentan claves de identificación, descripciones e ilustraciones. Se agregan comentarios complementarios sobre taxonomía, distribución y fenología
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