Lúcia Sadayo Assari Takahashi

Tempo de armazenamento e temperatura na porcentagem e velocidade de germinação das sementes de camomila

Chamomile is an annual herbaceous species. Its flowers are used in popular medicine and as a vegetable flavour. It propagates for seeds. The objective of these trials was to evaluate the ideal temperature, packing time on the percentage and germination speed of chamomile. The first trial used seeds from a medicinal vegetable garden from Universidade Estadual de Londrina, Parana, Brazil. They were treated, packed in paper bags and kept in refrigerate chamber during one, two, three and four years. In germination test it was used 25°C with 10 hours of light and 14 hours of dark. It was evaluated the percentage and germination speed index (GSI) in 8 replicates with 100 seeds each one. The seeds used in the second trial were commercial ones. The tested treatments were: constant temperatures of 10°C and 15°C with 12 hours of photoperiod, and alternated temperatures of 10°C/15°C and 10°C/20°C with 10 hours of photoperiod. The evaluations were made at 7th and 14th days after seeding. The seeds packed until 2 years showed greatest percentage and germination speed index. The temperature of 10°C reduced the germination for 3.3% at 7 DAS. The constant temperature of 10°C and 15°C, and alternated in 10°C/15°C and 10°C/20°C provided germination of the seeds superior to 80% in the end of 14th day.

Cultivo de orquídea em substratos à base de casca de café

Abstract The use of agricultural residue as a substrate for plant growth is a promising alternative for the cultivation of orchids, whether by providing cost reduction or contributing to minimize pollution through the accumulation of these materials in environment. The objective of this work was to evaluate the development of Cattleya hybrid in substrates based on coffee husk. The experi-ment was in complete randomized design, with six treatments (xaxim; coffee husk; coffee husk + coconut powder; coffee husk + fibered coconut, coffee husk + pinus husk; coffee husk+ carbonized rice husk) and ten replications. After 24 months, some plant traits were evaluated: plant height, number of buds, number of flowers; the largest pseudo-bulb diameter, the longest root length and root dry matter. Chemical analysis and evaluation of pH, electric conductivity, density and water retention ca-pacity of substrates were taken, with exception of the chemical composition of coconut based substrates. There was no sig-nificant difference between the substrates when considering the plant height, number of flower and root dry matter, with an average of 33 cm; 1.1 g, and 3.5 g respectively. Regarding coffee husk and mixtures, no differences were found in the length of roots. Mixing coffee husk with coconut powder increased the number of shoots and diameter of the largest pseudobulbs, whereas mixing coffee husk with carbonized rice husk increased the the number of shoots. The coffee husk can be used in the cultivation of orchid hybrid (

Efeito residual de herbicidas pré-emergentes no desenvolvimento inicial e na composição bioquímica de plântulas de feijão-vagem

Received: March 23, 2017. Accepted: October 19, 2017. 1 Universidade Estadual de Londrina – UEL, Rodovia Celso Garcia Cid, Pr 445, Km 380, CEP 86057-970, Londrina, PR, Brazil. E-mail: ffavorettofurlan@gmail.com; gustavo-freiria@hotmail.com; dj_bertoncelli@hotmail.com; monica_omura@hotmail.com; veronicapellizzaro@hotmail.com 2 Departamento de Agronomia, Universidade Estadual de Londrina – UEL, Londrina, PR, Brazil. E-mail: luciasadayo@gmail.com Abstract The use of herbicides must be made in a rational way, giving priority to reduce possible adverse effects on subsequent crops. The objective was to evaluate the residual effect of pre-emergent herbicides on growth and initial development as well as the biochemical composition of snap bean seedlings. The experimental design used was the completely randomized, with four replications in factorial scheme 3x4, three snap bean cultivars (Macarrão Favorito, Macarrão Preferido e Macarrão Trepador) and three pre-emergent herbicides, plus a control (without herbicide). Was use the residual doses of pre-emergent herbicides sulfentrazone in 0.3 g ha-1, diclosulam in the concentrations of 0.126 g ha-1 and imazethapyr in 0.05 g ha-1. The work was developed in a seeds analyze laboratory with the purpose of minimizing possible adverse effects of the environment. The seeds were sowing on germitest paper moistened with solutions containing the herbicides, with each respective treatment. The following characteristics were evaluated: germination (GER), germination speed index (GSI), seedling length (SL) and seedling dry mass (SDM) and soluble protein content (PROT) in addition to the enzymatic activity of catalase (CAT), peroxidase (PER) and phenylalanine ammonia-lyase (PAL). The phytometric variables SL, SDM, GER and GSI reduced in the presence of herbicides, and for the levels of PROT and enzymatic activity of CAT, PER and PAL there was observed a variation according to the genotype. The sulfentrazone showed up as the product of higher toxicity, as well as the Macarrão Trepador as the genotype with lower tolerance.

Low back pain as the first presentation of Hürthle cell carcinoma of thyroid

Thyroid cancer is the most common tumor of the endocrine system.1,2 It is usually divided in three major subtypes: papillary, follicular, andmedullary. The prognosis of patients with differentiated thyroid cancer is excellent and 10-year survival is more than 90%.1 Dissemination of thyroid cancer is primarily via regional lymph nodes andmetastatic pulmonary disease may develop, followed by bone involvement.1

Optimal conditions for germination of seeds of Epiphyllum oxypetalum

Queen of the night (Epiphyllum oxypetalum), an ornamental cactus, is widespread in many countries. The demand for this species is increasing because esthetic quality of its flowers is appreciated. This study aimed to analyze the influence of temperature, substrate and luminosity on the germination of E. oxypetalum seeds. A completely randomized design with four replications was used in a 3 x 2 x 2 factorial scheme, corresponding to three temperatures (20, 25 and 30°C), two substrates (blotting paper and sand of average particle size) and two luminosity conditions (light and dark). The percentage germination, germination speed index (GSI) and mean germination time (MGT) were evaluated. The 20°C treatment combined with the sand substrate and the presence of light provided favorable conditions for the germination of the seeds of E. oxypetalum, yielding a higher GSI and a shorter MGT; however, the species may be considered as preferentially photoblastic because of its ability to germinate in darkness. Key words: Cactaceae, luminosity, ornamental plant, substrate, temperature, vigor.