Journal
PLANT SPECIES BIOLOGY
Volume 35, Issue 1, Pages 81-88Publisher
WILEY
DOI: 10.1111/1442-1984.12255
Keywords
Campos Rupestres; clonal reproduction; life-history strategy; pseudovivipary canopy-forming; vegetative reproduction
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Funding
- CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior)
- FAPEMIG (Fundacao de Amparo a Pesquisa do Estado de Minas Gerais)
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)
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Pseudovivipary is an asexual reproduction strategy correlated with extreme environments. Comanthera nivea occurs in habitats with low water retention. This study investigated the effect of soil moisture availability on C. nivea pseudoviviparous reproduction and flowering. We established four permanent plots (1 x 1 m), two in a shaded area, in which we marked 15 rosettes in each plot, and two in a full-sun area, in which we marked 10 rosettes in each plot. We made monthly observations from August 2016 to January 2017, to quantify the number of flower heads and of pseudoviviparous ramets per rosette, and measured soil moisture. Our results showed a high correlation between soil moisture and flowering. Flowering in C. nivea occurs in periods of increased soil moisture, whereas pseudoviviparous reproduction occurs in the driest period. The advantages of a pseudoviviparous canopy-forming strategy in habitats with scarcity of water in the soil are discussed.
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