Epidemiologia mączniaka jabłoniowego Podosphaera leucotricha (Ell. et Ev.) Salm. w Polsce. I. Zimowanie grzyba Podosphaera leucotricha (Ell. et Ev.) Salm. [Epidemiology of apple mildew Podosphaera leucolricha (Ell. et Ev.) Salm. in Poland. I. Hibernation of the fungus Podosphaera leucotricha (Ell. et Ev.) Salm.]

Possibilities to improve apple scab (Venturia inaequalis (Cke.) Wint.) and powdery mildew [Podosphaera leucotricha (Ell. et Everh.) Salm.] resistance on apple by increasing genetic diversity using potentials of wild species

Creating new apple cultivars largely depends on the availability of sufficient genetic diversity, while apple breeding has eroded in time the genetic base of domestic cultivars. The possibility to induce and exploit useful variability for selecting hybrids resistant to apple scab and powdery mildew attack was evaluated in interspecific descendants derived from five wild apple species (Malus cor...

Response of Several Apple Varieties to Powdery Mildew (podosphaera Leucotricha) Attack in Central Transylvania Conditions

The response of apple cultivars to powdery mildew attack – Podosphaera leucotricha (Ell. et Everh.) Salm. – on leaves and shoots, for seven years (1990-1996), emphasised a large variability for this character existing within 75 apple varieties tested in an experimental field at the Fruit Research Station in Cluj-Napoca, Central Transylvania, Romania. The experimental results confirmed that the ...

The knock‐down of the expression of MdMLO19 reduces susceptibility to powdery mildew (Podosphaera leucotricha) in apple (Malus domestica)

Varieties resistant to powdery mildew (PM; caused by Podosphaera leucotricha) are a major component of sustainable apple production. Resistance can be achieved by knocking-out susceptibility S-genes to be singled out among members of the MLO (Mildew Locus O) gene family. Candidates are MLO S-genes of phylogenetic clade V up-regulated upon PM inoculation, such as MdMLO11 and 19 (clade V) and MdM...

ارزیابی کارایی قارچ‌کش تتراکونازول روی سفیدک پودری درختان سیب (Podosphaera leucotricha Ellis. & Everh.)

A $2\ell k$ Kernel for $\ell$-Component Order Connectivity

In the `-Component Order Connectivity problem (` ∈ N), we are given a graph G on n vertices, m edges and a non-negative integer k and asks whether there exists a set of vertices S ⊆ V (G) such that |S| ≤ k and the size of the largest connected component in G−S is at most `. In this paper, we give a kernel for `-Component Order Connectivity with at most 2`k vertices that takes nO(`) time for eve...