Можливості диференціації гібридів соняшнику за низьких рівнів ураженості збудником фомопсису

Abstract

The results on damage degree estimation for sunflower hybrids by causal agent of phomopsis during the period of 2006-2008 ys under natural infection are given. A dependence of damage degree in sunflower hybrids on the HTC level of crop vegetation period is established. The method for the differentiation of sunflower hybrids by means of confidence interval (LSD) as to infected surface area of stalks by the given pathogene is suggested. As a result of 2-and 3-year data 29 hybrids having the least confident degree of affection, including, Kiy, Psyol, Bogun, Zorepad are released