Fábio M. Alves

The characterization of genetic resources is essential to carry out a breeding program. This study aimed to characterize Paspalum genotypes with potential use as soil surface covering to support breeding programs on the development of turf cultivars. Forty‐three Paspalum genotypes, comprising 11 species, were evaluated. The embryo‐sacs structure wa...

Polyploidy is defined as the presence of more than two complete chromosome sets in an organism and has frequently occurred throughout the history of angiosperms. Polyploidization is a process that typically results in instant speciation. Using Psidium cattleyanum, a natural polyploid complex with several cytotypes, we aim to test two hypotheses reg...

Polyploidy is a phenomenon that alters the genetic diversity of populations and has been reported as one of the most important evolutionary forces for plant diversification. The Psidium cattleyanum complex comprises a group of wild populations with several ploidy levels reported in the literature. The multiple cytotypes, associated with its wide di...

In this study, we developed and characterized microsatellite for Aspidosperma pyrifolium Mart. & Zucc., considered a species complex due to its morphological variation and disjunct distribution. This complex is predominant in the “Caatinga” of Northeast Brazil, but also occurs in semi-deciduous seasonal forests of central Brazil, in Chaco areas of...

Resumo O Chaco é maior domínio de florestas contínuas da América do Sul e agrega distintas famílias botânicas com destaque à Leguminosae. A elevada riqueza e diversidade de membros de Leguminosae, sobretudo de Papilionoideae, aliada à distribuição de determinados gêneros comuns às florestas secas tem motivado a investigação deste interessante grupo...

In the Clusia criuva Cambess. species complex, the two subspecies C. criuva subsp. parviflora Vesque and C. criuva subsp. criuva can only be distinguished on the basis of stamen/staminode morphology and geographical occurrence. Despite being recently restructured, taxonomic relationships in this complex remain unclear. Therefore, to illuminate the...

Genetic diversity and mating system of Rhizophora mangle L. (Rhizophoraceae) in Northern Brazil revealed by microsatellite analysis. CERNE, v. 24, n. 4, p. 295-302, 2018. HIGHLIGHTS Rhizophora mangle has low occurrence of self-pollination and low occurrence of mating among relatives. One to 12 pollen donors fertilized each seed tree. However, Genet...

Prosopis rubriflora Hassl. is a tree species typically found in chaquenian areas, mainly with an arborised phytophysiognomy in the southern region of the Pantanal wetland. This species has become vulnerable in recent decades as a result of considerable increases in anthropogenic activities such as cattle breeding, and this vulnerability has also be...

The Gran Chaco is the largest continuous region of the South American dry forest, spanning Argentina, Paraguay, Bolivia, and Brazil. Prosopis rubriflora and Prosopis rus-cifolia are typical tree species of chaquenian area forests, which have been subjected to continuous fragmentation caused by cattle raising. This study evaluated P. rubri-flora and...

Rauvolfia weddeliana is an endemic species restricted to plateau landscapes in South American savannahs. Rapid loss of habitat and expansion of agriculture in Central-West Brazil have critically reduced the original extent of savannahs, representing a major threat to its biotic diversity. Due to the discontinuous distribution of R. weddeliana and t...

Mangrove plants comprise plants with similar ecological features that have enabled them to adapt to life between the sea and the land. Within a geographic region, different mangrove species share not only similar adaptations but also similar genetic structure patterns. Along the eastern coast of South America, there is a subdivision between the pop...

In this study, we isolate and analyse a new set of microsatellite loci for Cattleya walkeriana . Twenty-two primer pairs were screened for C. walkeriana ( n = 32) and assessed for their transferability to Cattleya loddigesii ( n = 12) and Cattleya nobilior ( n = 06). All loci amplified for C. walkeriana ; however, for C. loddigesii and C. nobilior...

Background Prosopis rubriflora and Prosopis ruscifolia are important species in the Chaquenian regions of Brazil. Because of the restriction and frequency of their physiognomy, they are excellent models for conservation genetics studies. The use of microsatellite markers (Simple Sequence Repeats, SSRs) has become increasingly important in recent ye...

Around three million hectares of cerrado soils in Mato Grosso do Sul State are occupied by annual crops such as black oats, corn and sorghum, where occur weeds. The first requirement for management and control of weeds is the correct identification. The present work is a floristic survey of the weeds of black oats, corn and sorghum crops, in cerrad...

RESUMO Leguminosae apresenta-se como uma das famílias mais representativas do Chaco brasileiro, com destaque para Caesalpinioideae, segunda subfamília em número de espécies. Ainda assim, existem poucos levantamentos para essa região. Este estudo consiste no levantamento florístico de Caesalpinioideae em um remanescente de Chaco em Porto Murtinho, M...

The present study was made in three Cerrado’ areas sensu latu in the Guariroba Stream basin in Campo Grande-MS; with line interception method of Canfield. The different sample periods was estimate by Shanon index with frequency, coverage, and relative density. The 136 species were distributed in 69 genera, that belongs to 36 families. The families...