Skip to main content

Table 1 Segregation of the resistant trait in the cross populations. Offspring were classified susceptible or resistant on the basis of their rAUDPC indexes for the pathogen mycelium growth and sporulation (averaged data from two or three experiment replicates) compared to the calculated values for the control genotypes and cross parents

From: Construction of a high-density genetic map and detection of a major QTL of resistance to powdery mildew (Erysiphe necator Sch.) in Caucasian grapes (Vitis vinifera L.)

Population Phenotypic data Susceptibility intervala Resistance intervalb Susceptible offsprings Resistant offsprings p-value χ2 test (1:1)
50041 rAUDPC for mycelium growth 0,15-0,44c 0,42-0,70 32 35 0,71
50042 0,65-0,91 141 123 0,27
50041 rAUDPC for sporulation intensity 0,45-0,72c 0,87-0,94 40 27 0,11
50042 0,93-1,00 132 132 1,00
  1. adetermined as 5th and 95th percentile of the rAUDPC values calculated for the susceptible control genotypes and cross parents
  2. bfor population 50041 determined as the minimum and the maximum rAUDPC value calculated for the resistant cross parent; for population 50042 determined as 5th and 95th percentile of the values calculated for the resistant cross parents
  3. cthresholds values distinguishing susceptible and resistant offsprings