Yuri L.M.,DCV |
Isabele A.G.,Federal University of Rio Grande do Norte |
Dantas C.V.S.,Federal University of Rio Grande do Norte |
de Brito L.K.F.,Federal University of Rio Grande do Norte |
And 2 more authors.
Revista Brasileira de Fruticultura
To assess the effects of salt on the pineapple MD Gold during the multiplication and rooting phases in vitro, this study evaluated its performance in different concentrations of NaCl in the absence or presence of growth regulators. Pineapple shoots were inoculated on MS solution in the absence and presence of the growth regulators naphthaleneacetic acid (NAA) and 6-benzlaminopurine (BAP) and different concentrations of NaCl (Control - 0, 50, 100 and 150 mM). Monthly, shoots were subcultured and it was analyzed height, number of alive and dead leaves, and the rates of sprouting and rooting. During the multiplication in the absence of NAA and BAP, the NaCl treatments caused significant reduction in growth and development of pineapple shootings, expressed by the height and number of leaves, in the highest dose, which was not observed in the presence of growth regulators. During the first 60 days, an increase in leaf production occurred. However, after 90 days, there was a decrease in average living leaves in the shoots treated with salt. The in vitro cultivation of pineapple in the presence of salt is more efficient in the presence of NAA and BAP, ensuring continued growth, increasing the number of leaves, producing new buds and accelerating the process of rooting. Source
News Article | August 24, 2010
In a bid to prevent another ‘antennagate’ when the iPhone 4 reaches China in mid-September, Apple’s exclusive carrier there will offer free cases, according to a local news report. “The iPhone 4 is expected to suffer from the same issues related to signal reception in China, but China Unicom will be offering cases to customers as a free gift,” reports Caixin, an English-language online news site. The iPhone 4 will be introduced in China on September 16. Following numerous reports of dropped calls when the the iPhone 4 was held in a certain position, Apple eventually announced it would provide free cases to affected customers. Apple is eager to introduce its record-selling iPhone 4 in China, a nation where the Cupertino, Calif. company plans to build 25 stores and has seen 144 percent growth. China Unicom is also expected to offer the iPad, but the date for its introduction is not known.
Torres S.B.,Rural University |
de Paiva E.P.,DCV |
de Almeida J.P.N.,DCV |
Benedito C.P.,Rural University |
Revista Ciencia Agronomica
The tests of germination and vigour are essential components of the quality control process of seed producers. Therefore, the aim of this research was to study the methodology of the test of electrical conductivity, verifying its efficiency in identifying different levels of vigour in batches of coriander seed. To do this, four cultivars were used (Português, Super Verdão, Tabocas and Verdão), each represented by four batches of seed, which were initially subjected to evaluations of moisture content, germination, germination first count and seedling emergence. The test of electrical conductivity was carried out on 25 to 50 seeds soaked in 50 and 75 mL of distilled water at 25 °C for 2, 8 and 24 hours. The test of electrical conductivity is efficient to evaluate the physiological potential of coriander seeds when carried out with 50 seeds immersed in 50 mL of distilled water at 25 °C, after soaking for two hours. Source