Pollination biology and breeding system of syntopic Adenocalymma nodosum and A. peregrinum (Bignonieae, Bignoniaceae) in the Brazilian savanna
| Autor: | Paulo Eugênio Oliveira, Clesnan Mendes-Rodrigues, Thaíssa B.J. Engel, Nelson S. Bittencourt-Jr, Tiago M. Rezende, Diana Salles Sampaio |
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| Přispěvatelé: | Universidade Federal de Uberlândia (UFU), Universidade Estadual de Campinas (UNICAMP), Inst Chico Mendes Conservacao Biodiversidade ICMB, Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Ecology biology Pollination Cerrado Plant Science biology.organism_classification medicine.disease_cause 010603 evolutionary biology 01 natural sciences Intraspecific competition Centridini Pollinator Pollen Botany Guild medicine Late-acting self-incompatibility Nectar Synchronopatry Zoophily Ecology Evolution Behavior and Systematics Interspecific compatibility 010606 plant biology & botany |
| Zdroj: | Web of Science Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2018-11-26T17:10:27Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-08-01 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) The tropical Bignoniaceae is mostly late-acting self-incompatible (LSI) and depends on a guild of medium to large sized bees for their pollination. Adenocalymma nodosum and A. peregrinum are syntopic shrubs in savanna areas with similar flowers and flowering overlap. In this sense, the aims of the present study were to analyse the pollination biology and breeding systems of these species, and to check for bilateral compatibility which could hinder reproductive isolation and species boundaries. Flower features such as yellow corolla, sweet scent and diurnal one-day anthesis were similar between species. However, they differed in nectar production patterns, which showed higher volume in A. nodosum and was irregular in A. peregrinum. The main pollinators for both species were medium to large Centridini bees. Many nectar and pollen robbers may disturb effective pollination and help to explain the low natural fruit-set. The species were self-sterile but pollen tube growth down to the ovules and differential ovary development indicated LSI, as in most Bignoniaceae studied to date, which reinforce the idea of family, clustering for this self-incompatibility system. Fruit-set from interspecific hand pollinations was similar to those of intraspecific cross-pollinations, with high seed viability (88%) and seedling development. Similar floral biology and guild of pollinators, and bilateral inter-compatibility indicate that natural hybridization is possible among these species. (C) 2016 Elsevier GmbH. All rights reserved. Univ Fed Uberlandia, Inst Biol, Campus Umuarama,Bloco 2D, BR-38405320 Uberlandia, MG, Brazil Univ Estadual Campinas, Inst Biol, Programa Posgrad Biol Vegetal, BR-13083970 Campinas, SP, Brazil Inst Chico Mendes Conservacao Biodiversidade ICMB, EQSW 103 104, Bloco A,Complexo Adm,Setor Sudoeste, BR-70670350 Brasilia, DF, Brazil Univ Estadual Paulista, Dept Zool & Bot, Campus Sao Jose Rio Preto, BR-15054000 Sao Paulo, Brazil Univ Estadual Paulista, Dept Zool & Bot, Campus Sao Jose Rio Preto, BR-15054000 Sao Paulo, Brazil CNPq: 486091/2007-4 CAPES: 23038.008068/2010-95 |
| Databáze: | OpenAIRE |
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