Since 1968, three spontaneous 4x melons (Cucumis melo L.) plants were discovered in our field or greenhouse plantings. Two were found in the cultivar Planters Jumbo and one in the virescent marker C879-52. Each of these 4x plants had rounded cotyledons, shorter internodes, thicker stems and leaves, more hairs, and smaller fruits, with larger stem and blossom scars, than their 2x counterparts. A...

1 The local Whittle (or Gaussian semiparametric) estimator of long range dependence , proposed by Künsch (1987) and analyzed by Robinson (1995a), has a relatively slow rate of convergence and a finite sample bias that can be large. In this paper, we generalize the local Whittle estimator to circumvent these problems. Instead of approximating the short-run component of the spectrum, ϕ(λ) by a co...

We consider a k-GARMA generalization of the long-memory stochastic volatility (LMSV) model, discuss the properties of the model and propose a wavelet-based Whittle estimator for its parameters. Its consistency is shown. Monte Carlo experiments show favorable properties of the proposed method with respect to the Whittle estimator and a wavelet-based approximate maximum likelihood estimator. An a...

Introduction Meningococcal infection may present as meningitis or as acute-fulminating, subacute or chronic sepicaemia. There may be associated arthritis, vasculitis, episcleritis and intravascular coagulation (Whittle et al., 1973). Such complications which usually occur between 3 and 10 days from the onset of the illness, when patients are otherwise improving, have been attributed to immune c...

Recent advances in plant genetic engineering offer substantial benefits to farmers throughout the world. Genetic research has identified many exogenous genes that could considerably decrease production costs through transgene-mediated resistance to insect, viral, fungal and bacterial pathogens. Potato can be produced from true potato seed (TPS) through a sexual polyploidization step, known as 4...