Pollen flora of Reserva do Parque Estadual das Fontes do Ipiranga (Sao Paulo, Brasil). Families: 16-Menispermaceae, 52-Violaceae). Pollen grains of five species of Menispermaceae (Abuta selloana Eichler, Cissampelos andromorpha DC, Disciphania modesta Diels, Hyperbaena domingensis (DC.) Benth, Odontocarya acuparata Miers) and one species of Violaceae (Anchietea pyrifolia (Mart.) G. Don), ocurring in the Reserva do Parque Estadual das Fontes do Ipiranga were studied in the present work. Descriptions, illustrations, and observations are presented, for all studied taxa.

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Flora Polínica da Reserva do Parque Estadual das Fontes do Ipiranga

Pollen grains of seven genera and 11 taxa of Cucurbitaceae (Anisosperma passiflora (Vell.) A. Silva Manso, Cayaponia cabocla (Vell.) Mart., C. martiana (Cogn.) Cogn., C. pilosa (Vell.) Cogn., C. villosissima Cogn., Echinocystis racemosa (Steud.) Mart. Crov., Melothria campestre Naudin., M. cucumis Vell. var. cucumis, Sicydium gracile Cogn., Sicyos polyacanthos Cogn., and Wilbrandia verticillata (Vell.) Cogn, ocurring in the "Reserva do Parque Estadual das Fontes do Ipiranga", were studied. Descriptions and illustrations are presented for all studied species.

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Flora Polínica da Reserva do Parque Estadual das Fontes do Ipiranga (São Paulo, Brasil): Família: 61-Cucurbitaceae

Aunque Grewioideae es conocida como la unica subfamilia estenopalinica de Malvaceae, los analisis de polen publicados sugieren una variacion morfologica. Para comprobar si la variacion estructural podria tener valor taxonomico, la morfologia del polen de 16 especies de los generos Corchorus, Heliocarpus, Luehea, Mollia y Triumfetta (Malvaceae, Grewioideae) distribuidas en la region austral de America del Sur fue analizada con microscopia optica y electronica de barrido. Los granos de polen son 3-zonocolporados, isopolares, radiosimetricos, subesferoidales a prolatos y de tamano mediano a grande. La escultura de la exina varia desde un birreticulo con perforaciones en el lumen a un tectum densamente rugulado o microrreticulado. Los caracteres morfologicos de polen obtenidos con microscopio optico fueron utilizados en un analisis multivariado para evaluar la variabilidad dentro y entre los generos. El analisis de componentes principales (PCA) permitio diferenciar cinco grupos sobre la base de forma y tamano del grano, largo del colpo, ancho y alto de la endoabertura y espesor de la exina. Las especies estudiadas comparten el polen tipo Grewia caracteristico de la mayoria de las especies de Grewioideae y Byttnerioideae, pero los caracteres polinicos analizados son de reducido valor diagnostico a nivel generico y/o especifico

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Análisis morfológico y morfométrico del polen de Corchorus, Heliocarpus, Luehea, Mollia y Triumfetta (Malvaceae, Grewioideae) en la región austral de América del Sur

No presente estudo foram investigados os graos de polen de quatro especies pertencentes a familia Boraginaceae (Cordia sellowiana Cham., Heliotropium indicum L., Tournefortia breviflora DC., T. villosa Salzm. ex DC.) e de duas especies de Gesneriaceae [Nematanthus villosus (Hanst.) Wiehler, Sinningia allagophylla (Mart.) Wiehler] ocorrentes na "Reserva do Parque Estadual das Fontes do Ipiranga". Sao apresentadas descricoes, ilustracoes e observacoes para todas as especies estudadas.

http://www.scielo.br/pdf/hoehnea/v41n3/10.pdf

Flora polínica da reserva do parque estadual das fontes do Ipiranga (São Paulo, SP, Brasil). Famílias: 141-Boraginaceae e 149-Gesneriaceae

The plants are directly affected by environmental factors such as water stress, temperature, radiation, among others. These factors affect not only the vegetative organs, but also reproductive structures and may cause damage to plants agriculturally exploited. Physalis peruviana L. is a species of commercial interest belongs to the Solanaceae family, preferably grown under shade, which still features restricted to small cultivation areas in Brazil. Given the need for shading culture presented by this study aimed to characterize the pollen grain species for future applications in breeding programs and the influence of shading nets on the external morphology of the pollen grains of this species. The study was conducted at the Federal University of Lavras, where three replicates of two plants were grown in full sun and under shading nets in white, blue, red and black colors. The pollen of flowers in anthesis was collected, processed and photographed by scanning electron microscopy (SEM) electron microscopy. The polar diameter, equatorial diameter and area were measured in ten pollen grains. The results showed that pollen grains of P. peruviana are isopoloares, radial, of prolate-spheroidal format and medium size. Also there was an increase in the pollen grain area when grown in white shading net and full sun.

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CARACTERIZAÇÃO E ALTERAÇÕES MORFOLÓGICAS EM GRÃOS DE PÓLEN DE FISÁLIS (Physalis peruviana L. (Solanaceae)) CULTIVADA SOB DIFERENTES ESPECTROS LUMINOSOS

Pollen grains of 12 genera and 41 species of Solanaceae occurring in the "Reserva do Parque Estadual das Fontes do Ipiranga" were examined: Acnistus arborescens (L.) Schlecht., Athenaea picta (Mart.) Sendtn., Brunfelsia latifolia Benth., Brunfelsia pauciflora (Cham. & Schlecht.) Benth., Capsicum flexuosum (L.) Sendtn., Capsicum villosum (L.) Sendtn., Cestrum amictum (L.) Schlecht., Cestrum corymbosum (L.) Schlecht., Cestrum lanceolatum (L.) Miers, Cestrum schlechtendalii (L.) G. Don, Cestrum sendtnerianum (L.) Mart. ex Sendtn., Cyphomandra diploconos Sendtn., Cyphomandra velutina Sendtn., Dyssochroma viridiflora (Sims) Ducke, Nicotiana langsdorffii (Weinm.) Roem. & Schult., Physalis peruviana L., Physalis viscosa L., Sessea brasiliensis Tol., Solandra grandiflora Sw, Solanum americanum Mill., Solanum atropurpureum Schrank., Solanum bullatum Vell., Solanum capsicoides Allion., Solanum cernuum Vell., Solanum concinnum Schott ex Sendtn., Solanum didynum Dun., Solanum diflorum Vell., Solanum excelsum St. Hil. ex Dun., Solanum granuloso-leprosum Dun., Solanum hoehnei Morton, Solanum inaequale Vell., Solanum inodornum Vell., Solanum lycocarpum St. Hil. ex Dun., Solanum mauritianum Scop., Solanum paniculatum L., Solanum rufescens Sendtn., Solanum sisymbriifolium Lam., Solanum swartzianum Roem. & Schult., Solanum vaillantii Dun., Solanum variabile Mart., Solanum viarum Dun. Descriptions are presented for all species studied, including illustrations, additional observations and six key for identification.

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Ligia Novac Souza

Papers

Flora Polínica da Reserva do Parque Estadual das Fontes do Ipiranga (São Paulo, Brasil): Família: 136-Solanaceae