Crown gall causes stunting of growth. Both loss of yield and stunting of growth may occur when seedlings or young cuttings are infected in the early stages of plant growth. The lack of vigor, reduction in foliage, and water stress are associated with chronically diseased root systems.
1. In probability theory, a probability density function (pdf), or density of a continuous random variable, is a function that describes the relative likelihood for this random variable to take on a given value.
One way of dealing withsuch data is to use a weight function which is, for each fixed x, a probability density which has support on the positive half-lineand which has its mass concentrated near x. For example, one could choose w (x, .