Eimeria curvata is a new coccidian described in the doves Columbina talpacoti and Scardafella squammata from western of the State of São Paulo, Brazil. The oocysts are ovoid to ellipsoid, 18.3 (17-19) microm x 15.5 (15-17) microm, with a shape index of 1.2 (1.1-1.3). The wall is colorless, smooth and double-layered. A polar granule is present, but there is no micropyle or oocyst residuum. The s...

To study the role of ethylene in plant reproduction, we constructed transgenic tobacco plants in which the expression of a pistil-specific gene coding for the ethylene-forming enzyme 1-aminocyclopropane-1-carboxylate oxidase was inhibited. Flowers from transgenic plants showed female sterility due to an arrest in ovule development. Megasporogenesis did not occur, and ovules did not reach maturi...

Paeonia ostii ‘Feng Dan’ is an economically important, multipurpose woody plant in terms of its medical, ornamental, and oil values; however, there a noticeable contradiction between the increasing demands lack excellent germplasm resources because traditional breeding propagation approaches. In vitro embryo culture attractive option for this issue. This study presents protocol immature P. Dan’...

Abstract The knowledge of the testicular and ovarian morphology a particular fish species is paramount importance. Such analyze enables development studies techniques aiming improvement their reproduction, management, commercialization even conservation. This study performed characterization ornamental Amazon Serrapinnus kriegi. A total three males females had gonads analyzed by optical microsc...

Recalcitrant seed vigor is closely related to moisture, so how do the water distribution and status change during drying? In this study, we investigated association between content (WC) germination of Quercus acutissima seeds used nuclear magnetic resonance (NMR) monitor dynamics drying. Results showed that freshly dispersed had 38.8% WC, but drying 14.8% WC resulted in a complete loss vigor. M...

Anthocyanidin reductase encoded by the BANYULS (BAN) gene is the core enzyme in proanthocyanidin (PA) biosynthesis. Here, we analyzed the developmental mechanisms that regulate the spatiotemporal expression of BAN in the developing Arabidopsis seed coat. PA-accumulating cells were localized histochemically in the inner integument (seed body and micropyle) and pigment strand (chalaza). BAN promo...

This research aims to study the efficacy of Cinnamomum verum (Cv) extracts for ovicidal, larvicidal, and repellent activities against Culex quinquefasciatus mosquito vectors. The active components C. or cinnamon oil by Gas Chromatography (GC) analysis showed highest cinnamaldehyde at 83.53%. For ovicidal assay, essential concentrations 12.5, 25 50 ppm 72 h had 100% egg hatch inhibition a signif...

BACKGROUND AND AIMS The water-impermeable seeds of Ipomoea lacunosa undergo sensitivity cycling to dormancy breaking treatment, and slits are formed around bulges adjacent to the micropyle during dormancy break, i.e. the water gap opens. The primary aim of this research was to identify the mechanism of slit formation in seeds of this species. METHODS Sensitive seeds were incubated at various ...