Cytologically, the species of Passiflora with known chromosome number can be divided into four groups: (1) 2n = 12, 24, 36; (2) 24; (3) 18, 72; and (4) 20. The base proposed for genus is x 6, 9, 10 12 being considered secondary numbers. In present study, variability 5S 45S rDNA sites was investigated in 20 these groups to check reliability this hypothesis. group five diploid (2n 12) exhibit two (P. capsularis, P. morifolia rubra) or misera 2x tricuspis) sites. hexaploid cytotype had six...

The advancement of global warming and climate change requires strategic actions in understanding seeking interactions between plant species microorganisms that are more tolerant to water deficit. This research assessed the morpho-agronomic, physiological, gene expression responses two Passiflora cincinnata accessions (tolerant sensitive) deficit, focusing on their relationship with mycorrhization. A randomized design accessions, field capacities, four AMF inoculation treatments was used...

The São Francisco Submedium Valley is located at the Brazilian semiarid region and an important center for irrigated fruit growing. This responsible 97% of national exportation table grapes, including seedless grapes. Based on fact that organic fertilization can improve soil quality, we compared effects conventional management microbial activity mycorrhization grape crops. We measured glomerospores number, most probable number (MPN) propagules, richness arbuscular mycorrhizal fungi (AMF)...

The study aimed to determine the antimicrobial resistance patterns and identify molecular markers in Staphylococcus spp. (n=210) isolated from small ruminant mastitis Brazil. were evaluated by disk diffusion test detection of presence mecA, blaZ, ermA, ermB, ermC msrA genes PCR. efflux pump was performed using ethidium bromide biofilm production determined Congo red agar along with PCR for icaD gene. isolates most resistant amoxicillin (50.0%), streptomycin (42.8%), tetracycline (40.4%),...

In order to evaluate changes in leaf water potential (ψw) and solute accumulation induced by intermittent drought, an research was performed under greenhouse conditions using four umbu tree genotypes (GBU 44, GBU 48, 50 68) two treatments (control stressed withholding water), with replicates. The ψw measured four-hour intervals during a 24-hour period at the first stomatal closure end of experimental period. Carbohydrates, amino acids, protein proline contents were also evaluated leaves...

In the Northeast of Brazil, expansion guava crops has been impaired by Meloidogyne enterolobii that causes root galls, leaf fall and plant death. Considering fact arbuscular mycorrhizal Fungi (AMF) improve growth giving protection against damages pathogens, this work was carried out to select AMF efficient increase production seedlings their tolerance M. enterolobii. Seedlings were inoculated with 200 spores Gigaspora albida, Glomus etunicatum or Acaulospora longula 55 days later 4,000 eggs...

The genus Stylosanthes includes nitrogen-fixing and drought-tolerant species of considerable economic importance for perennial pasture, green manure land recovery. scabra is adapted to variable soil conditions, being cultivated improve pastures soils worldwide. Previous studies have proposed S. as an allotetraploid (2n = 40) with a putative diploid A genome progenitor hamata or seabrana 20) the B viscosa 20). We aimed provide conclusive evidence origin scabra.We performed fluorescence in...

ABSTRACT Water deficit and high temperatures are abiotic factors that most limit plant growth development. However, its effects depend on crop development stage stress duration intensity. Thus, the objective of was to evaluate cowpea subjected water restriction in different phenological stages increase air temperature. The experiment conducted with cultivar ‘Carijó’, chambers, a 4 x 3 2 factorial arrangement, corresponding levels availability (25, 50, 75, 100%,), (vegetative, flowering pod...

In this work, the cytotaxonomic implications of chromosomal characterization cultivated and native Zephyranthes species described in northeastern Brazil were studied. All individuals had karyotype formed by a set metacentric chromosomes, addition to submetacentric acrocentric chromosomes. robusta, 2n = 12 was observed with formula 4M + 2SM somatic cells, representing most symmetric among investigated species. Z. sylvatica showed three different chromosome complement numbers: 1M 5SM, 1B 5SM...

The traditional method of propagating Etlingera elatior (Jack) R.M. Sm. promotes the proliferation pathogens, reducing quality its output. However, as an alternative, one can use in vitro culture, making it possible to obtain plants free pathogens on a large scale. Moreover, inoculation with arbuscular mycorrhizal fungi (AMF) be critical ensure greater survival and development these under ex conditions. Thus, present study examined effect AMF (Gigaspora albida Claroideoglomus etunicatum)...

Schinopsis brasiliensis is an endangered tree species found in the Caatinga biome. It presents a characteristic slow development and difficult propagation, although it has been traditionally exploited region. Application of arbuscular mycorrhizal fungi (AMF) phosphorus (P) fertilization may be beneficial to S. at seedling stage, which same time help conservation recovery degraded areas We assessed response AMF inoculation (Claroideoglomus etunicatum Acaulospora longula) P (0, 12, 24, 48 mg...

Cowpea planting season is crucial for high yield and should comprise the period of year that warrants best climatic conditions cowpea cultivation. Thus, objective this study was to evaluate influence water availability temperature on performance cultivars. A greenhouse experiment conducted using a 4 × 2 5 factorial arrangement, with four replications. Factors included levels soil moisture (25, 50, 75, 100% holding capacity), two growing seasons (mild hot), five cultivars (Carijó, Itaim,...

Chromosome analyses were performed in two grasshopper species of the genus Schistocerca, S. pallens and flavofasciata. Both shared same diploid number (2n = 23, X males; 2n 24, XX females);and a conserved karyotype composed exclusively acrocentric chromosomes, but differed their distribution patterns constitutive heterochromatin nucleolus organizer regions (NORs). Constitutive was located pericentromeric region all chromosomes both species. flavofasciata presented an additional C-band on...

The aim of this study was to evaluate three plant species native Caatinga (Aspidosperma pyrifolium, Ziziphus joazeiro and Pseudobombax simplicifolium) in response inoculation with two arbuscular mycorrhizal fungi (autoctone: Claroideoglomus etunicatum or exotic: Acaulospora longula) phosphate fertilization. experiment conducted a greenhouse completely randomized design involving factorial arrangement treatments (control, C. A. 4 levels single superphosphate (0 - no added P2O5, 12, 24 48 mg...