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EgLFY, the Eucalyptus grandis homolog of the Arabidopsis gene LEAFY is expressed in reproductive and vegetative tissues
Dornelas, Marcelo Carnier;Amaral, Weber A. Neves do;Rodriguez, Adriana Pinheiro Martinelli;
Brazilian Journal of Plant Physiology , 2004, DOI: 10.1590/S1677-04202004000200006
Abstract: the eglfy gene cloned from eucalyptus grandis has sequence homology to the floral meristem identity gene leafy (lfy) from arabidopsis and floricaula (flo) from antirrhinum. eglfy is preferentially expressed in the developing eucalypt floral organs in a pattern similar to that described previously for the arabidopsis lfy. in situ hybridization experiments have shown that eglfy is strongly expressed in the early floral meristem and then successively in the primordia of sepals, petals, stamens and carpels. it is also expressed in the leaf primordia of adult trees. the expression of the eglfy coding region under control of the arabidopsis lfy promoter could complement strong lfy mutations in transgenic arabidopsis plants. these data suggest that eglfy plays a similar role to lfy in flower development and that the basic mechanisms involved in flower initiation and development in eucalyptus may be similar to those occurring in arabidopsis.
Ocorrência de Migdolus fryanus (Coleoptera: Cerambycidae) em plantios de Pinus caribaea var. hondurensis
Wilcken, Carlos Frederico;Orlato, Cassiano;Ottati, Angelo Luiz Tadeu;
Revista árvore , 2005, DOI: 10.1590/S0100-67622005000100018
Abstract: larvae of migdolus fryanus westwood (coleoptera: cerambycidae) were found damaging roots of young plants of p. caribaea hondurensis (sénéel) barr. & golf. in the state of s?o paulo, brazil. this fact increases the importance of this species because the damages have been increasing in forest species specially in eucalyptus plantations. this is the first record of m. fryanus in pine plantations and this insect can be considered a pest of pine plants. details on the morphology and biological characteristics, damage and possible control methods to m. fryanus are discussed.
Use of wood from Pinus caribaea var. caribaea and Pinus caribaea var. bahamensis for production of particleboard panels  [PDF]
Setsuo Iwakiri,Alberto Antonio Manhi?a,Carlos Frederico Alice Parchen,Everilton José Cit
CERNE , 2010,
Abstract: This study aimed to evaluate the quality of particleboard panels made with wood from Pinus caribaea var. caribaea andPinus caribaea var. bahamensis, as obtained from forest stands. Experimental panels were produced with a nominal density of 0.70 g/cm3,using urea-formaldehyde resin and wood particles of Pinus caribaea var. caribaea and Pinus caribaea var. bahamensis, at rates of100%x0%, 75%x25%, 50%x50%, 25%x75% and 0%x100%. Pinus taeda wood was used as control sample. Panels were compressed ata specific pressure of 40 kgf/cm2 and temperature of 160oC, for 8 minutes. Analysis results of water absorption, thickness swell, internalbond, modulus of elasticity and modulus of rupture properties indicated feasibility of using wood from Pinus caribaea var. caribaea andPinus caribaea var. bahamensis for production of particleboard panels, individually or combined at rates of 75%, 50% and 25%.
African leafy vegetables in South Africa
WS Jan van Rensburg, W van Averbeke, R Slabbert, M Faber, P van Jaarsveld, I van Heerden, F Wenhold, A Oelofse
Water SA , 2007,
Abstract: In this article the term ‘African leafy vegetables’ was adopted to refer to the collective of plant species which are used as leafy vegetables and which are referred to as morogo or imifino by African people in South Africa. Function is central in this indigenous concept, which is subject to spatial and temporal variability in terms of plant species that are included as a result of diversity in ecology, culinary repertoire and change over time. As a result, the concept embraces indigenous, indigenised and recently introduced leafy vegetable species but this article is concerned mainly with the indigenous and indigenised species. In South Africa, the collection of these two types of leafy vegetables from the wild, or from cultivated fields where some of them grow as weeds, has a long history that has been intimately linked to women and their traditional livelihood tasks. Among poor people in remote rural areas the use of these types of leafy vegetables is still common but nationwide there is evidence of decline, particularly in urban areas. Cultivation of indigenous or indigenised leafy vegetables is restricted to a narrow group of primarily indigenised species in South Africa. Seven groups of indigenous or indigenised African leafy vegetables that are important in South Africa were given special attention and their local nomenclature, ecology, use and cultivation are discussed.
Determinación de vitamina (a -Tocoferol) en Pinus Caribaea Morelet y Eucalyptus SP.
Bécquer Romagosa,Clara; Quert Alvarez,Rolando; Casti?eira Díaz,Mirta; Capote Hernández,Raúl;
Revista Cubana de Farmacia , 1996,
Abstract: a fast methods of thin layer chromatography for the qualitative and quantitative determination of vitamine e (a -tocopherol) in samples of pinus caribaea morelet and eucalyptus sp. is presented. the ethereal extracts were chromatographied in plates preelaborated with silica gel, for which chloroform was used as a mobile phase. quantification was carried out by densitometric detection of the compound stains, using a computer controlled system in the modes of reflexion absorbability at a wave longitude of 280 nm. this paper is the first report about the presence of this substance in cuba. vitamin e has been found in concentrations of 177 and 2 400 mg/kg of dry drug in pine and eucalyptus respectively.
FATTY ACID COMPOSITION OF SOME LEAFY VEGETABLES OF BANGLADESH  [PDF]
Kamal Karmakar, Tanvir Muslim* and Md. Azizur Rahman
International Journal of Pharmaceutical Sciences and Research , 2013,
Abstract: Fatty acid composition of six different leafy vegetables of Bangladesh was investigated. The amount of bound fatty acids was found to be higher than the free fatty acids in all the leafy vegetables. Different fatty acids were identified and their relative proportions were determined by GLC from the leafy vegetables.
Provenance and family variation of Pinus caribaea var. hondurensis from Guatemala and Honduras, grown in Brazil, Colombia and Venezuela
Moura, Vicente Pongitory Gifoni;Dvorak, William Stephen;
Pesquisa Agropecuária Brasileira , 2001, DOI: 10.1590/S0100-204X2001000200003
Abstract: pinus caribaea var. hondurensis (sénécl) barr. & golf. is a tropical pine that naturally occurs in lowland areas of belize, el salvador, guatemala, honduras, nicaragua, and eastern mexico. it has been one of the most studied tropical pines and the one with the most commercial importance in brazil. the objective of this work was to select the best provenances for plantations and best trees in families for the establishment of seed orchards. for that a trial with five provenances and 47 open-pollinated families was planted near planaltina, federal district, in the cerrado region of brazil. the provenances tested were poptun (guatemala), gualjoco, los limones, el porvenir and santa cruz de yojoa (honduras) and assessed at 12 years of age. poptun and gualjoco had larger volume, and los limones and el porvenir the lowest incidence of forks and foxtails. individual tree heritabilities for volume, stem form and branch diameter were 0.34, 0.06, and 0.26 respectively. more than 90% of the trees had defects, common in unimproved p. caribaea. selection criteria for quality traits need to be relaxed in the first generation of breeding to allow for larger genetic gains in productivity. results from this test compared with p. caribaea var. hondurensis trials in other brazilian, colombian and venezuelan sites suggest that provenance x site and family x site interactions are not as strong as in other pine species.
Provenance and family variation of Pinus caribaea var. hondurensis from Guatemala and Honduras, grown in Brazil, Colombia and Venezuela
Moura Vicente Pongitory Gifoni,Dvorak William Stephen
Pesquisa Agropecuária Brasileira , 2001,
Abstract: Pinus caribaea var. hondurensis (Sénécl) Barr. & Golf. is a tropical pine that naturally occurs in lowland areas of Belize, El Salvador, Guatemala, Honduras, Nicaragua, and eastern Mexico. It has been one of the most studied tropical pines and the one with the most commercial importance in Brazil. The objective of this work was to select the best provenances for plantations and best trees in families for the establishment of seed orchards. For that a trial with five provenances and 47 open-pollinated families was planted near Planaltina, Federal District, in the Cerrado Region of Brazil. The provenances tested were Poptun (Guatemala), Gualjoco, Los Limones, El Porvenir and Santa Cruz de Yojoa (Honduras) and assessed at 12 years of age. Poptun and Gualjoco had larger volume, and Los Limones and El Porvenir the lowest incidence of forks and foxtails. Individual tree heritabilities for volume, stem form and branch diameter were 0.34, 0.06, and 0.26 respectively. More than 90% of the trees had defects, common in unimproved P. caribaea. Selection criteria for quality traits need to be relaxed in the first generation of breeding to allow for larger genetic gains in productivity. Results from this test compared with P. caribaea var. hondurensis trials in other Brazilian, Colombian and Venezuelan sites suggest that provenance x site and family x site interactions are not as strong as in other pine species.
Divergência genética entre progênies de Pinus caribaea var. caribaea com base em caracteres quantitativos Genetic divergence among progenies of Pinus caribaea var. caribaea under quantitative characters
Janete Motta da Silva,Ananda Virgínia de Aguiar,Edson Seizo Mori,Mario Luiz Teixeira de Moraes
Pesquisa Florestal Brasileira , 2012, DOI: 10.4336/2012.pfb.69.69
Abstract: O objetivo desse trabalho foi quantificar a dissimilaridade genética entre progênies de P. caribaea var. caribaea para identificar genitores divergentes, visando gerar genótipos mais produtivos e avaliar a variabilidade total por meio de alguns caracteres fenotípicos de importancia comercial. Assim, um teste de progênies de P. caribaea var. caribaea foi implantado em delineamento experimental látice 10 x 10 triplo, com 99 progênies e uma testemunha comercial em Selvíria, MS. Foram avaliados os caracteres quantitativos antes e após desbaste aos 14 anos, tais como: altura total de plantas (m), diametro à altura do peito - DAP (cm); volume (m3 árvore-1); forma do fuste das árvores, densidade básica da madeira, na altura do DAP - DBM-1, e na metade da altura da árvore - DBM-2 (g cm-3); e sobrevivência das progênies (%). Houve baixa divergência genética entre as progênies de P. caribaea var. caribaea. O DAP foi o caráter que mais contribuiu para a divergência genética entre as progênies, tanto antes quanto depois do desbaste. As informa es geradas com base na distancia generalizada de Mahalanobis e o agrupamento das progênies pelo método de Tocher ser o usadas para definir as estratégias a serem adotadas em futuros programas de melhoramento e conserva o genética desta espécie. doi: 10.4336/2012.pfb.32.69.69 The objective of this research was to quantify the genetic dissimilarity among P.caribaea var. caribaea progenies to identify divergent parents aiming to generate highly productive genotypes and to evaluate the total variability by phenotypic characters of commercial importance. The progeny trial of P. caribaea var. caribaea was set up through 10 x 10 triple lattice design, with 99 progenies and a commercial control in Selvíria, MS, Brazil. We have evaluated quantitative characters before and after thinning procedures such as: total plant height (m), diameter at breast height (dbh) (cm); wood volume (m3 tree-1), stem form, wood density at dbh and wood density at the middle of the total height of tree stem (g cm-3), and survival of progenies (%). There was low genetic divergence among P. caribaea var. caribaea progenies. The diameter at breast height was the character that most contributes to genetic diversity among progenies, for both before and after thinning. The information of Mahalanobis distance and the clustering of progenies by Tocher's method will be important to define the future strategies for breeding programs and genetic conservation of the species. doi: 10.4336/2012.pfb.32.69.69
Damping-off Disease of two Pulp and Paper Forest Species (Pinus caribaea Morelet and Pinus oocarpa Schiede) in the Nursery
GE Omokhua, MI Godwin-Egein, VC Okereke
African Research Review , 2009,
Abstract: Anexperiment was conducted to assess the effect of four sowing media (ground granite, sharp river sand, top soil and saw dust) on the incidence of damping-off disease in two pine species, Pinus caribaea and Pinus oocarpa during the wet and dry seasons of 2006/07. The experiment was laid out in a completely randomised design (CRD) replicated three times. A significant effect (P<0.05) was observed as top soil recorded the highest disease incidence in both species. There was no significant effect (P>0.05) between the ground granite and sharp river sand. Saw dust had 0% disease incidence and supported the highest plant height. Fusarium oxysporum was implicated as the causal agent of the disease. There was an inter-seasonal variation inthe disease occurrence in the study area as it was more severe in the rainy season.
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