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| Damasceno junior,Pedro Corrêa; Pereira,Telma Nair Santana; Pereira,Messias Gonzaga; Silva,Francisco Filho da; Souza,Margarete de Magalhães; Nicoli,Rodrigo Gualandi. |
| This research was done to study the reproductive system of papaya hermaphrodite plant based on the histochemical nature of pollen grain, stigma receptivity, in vivo pollen grain germination and pollen:ovule ratio. In the histochemical analysis, pollen grains were stained by using Sudan IV and I2KI solution ; the stigma receptivity was assessed by alpha-naphthtyl acetate solution in closed and opened flowers. Pollen germination and pollen tube growing were examined in flower buds near anthesis with 0.1% aniline blue. To estimate the pollen:ovule ratio , anthers from each flower bud were dissected and all pollen grains were counted; ovules were dissected from ovaries and were counted under stereomicroscope. The results indicated that papaya pollen grains are... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya; Cleistogamy; Autogamy; Pollen grain histochemistry; P:O ratio; Stigma receptivity. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452009000100025 |
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| Bastos,Maria Josirene Souza Moreira; Bastos,Lucimário Pereira; Souza,Everton Hilo de; Soares,Taliane Leila; Morais,Daniel Vieira; Souza,Fernanda Vidigal Duarte de; Costa,Maria Angélica Pereira de Carvalho. |
| ABSTRACT Alcantarea nahoumii occurs exclusively in the state of Bahia, Brazil, and is classified as vulnerable due to deforestation and frequent fires in the region. Knowledge of floral and reproductive biology is fundamental to understanding ecological interactions, as well as the reproductive success of plant species. The objective of this study was to evaluate the floral and reproductive biology of A. nahoumii in an Atlantic Forest fragment with regard to phenology, pollen viability, stigma receptivity, pollination ecology and reproductive systems, all of which are important parameters for of the development of conservation strategies for the species. Anthesis is diurnal and heterogeneous, starting at 6:30 a.m. and lasting until 8:00 a.m. Highest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bromeliaceae; Floral visitors; Nectar; Pollen viability; Reproductive systems; Stigma receptivity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400665 |
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