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.
A graph that represents the density function of the Normal probability distribution is also known as a Normal Curve or a Bell Curve (see Figure 1 below). The Normal distribution requires two parameters, the mean and the standard deviation.