in order to study of drought tolerance levels in some wheat lines and cultivars based on uniform regional wheat yield trial (urwyt-m-75) an experiment was carried out using a strip plot design based on complete block design with 3 replications for two years (1998-2000) in torogh agricultural research station (mashhad, iran). the main plots (horizontal factor) were 3 levels of irrigation: 10, 20...

We study linear functions on the space of n × matrices over a field which preserve or strongly each Green's equivalence relations ( L , R H and J ) corresponding pre-orders. For these we are able to completely describe all preservers an algebraically closed (or more generally, in every polynomial degree has root), strong bijective any field. Over general field, non-zero -preservers coincide wit...

In this paper we consider spline function of general degree m which has the same area as the function does in each partition of the sub-intervals. The existence and uniqueness in general of spline functions also been studied and obtained the result. : In this paper we consider spline function of general degree, i.e.,of degree m, m=2,3,.... We first give definitions and notations. We take 0 =x 0...