Libraries of near-isogenic lines (NILs) are a powerful plant genetic resource to map quantitative trait loci (QTL). Nevertheless, QTL mapping with NILs is mostly restricted to genetic main effects. Here we propose a two-step procedure to map additive-by-additive digenic epistasis with NILs. In the first step, a generation means analysis of parents, their F(1) hybrid, and one-segment NILs and th...

--Total height, annual height growth, root collar diameter, total number of branches and total number of buds around the leader bud were recorded at age 6. The experimental material was included 136 half-sib families originating from stone pine natural populations from the Carpathian Mountains. Population samples were included in a randomized complete block experiment with four replications and...

one of the fundamental processes in woody plant propagation especially olive is rooting ability of cuttings. thus the selection of superior trees with desirable genetic structure is essential. adventitious root formation is a key step in rooting ability. therefore, identification of inducible genes in these processes is necessary. in this study, for the first time importin genes were identified...

Abstract A strong fire blight resistance QTL ( Mfu10 ) was previously detected on linkage group 10 (LG10) of Malus fusca accession MAL0045, using several strains the causative bacterium, Erwinia amylovora . As no strain capable breaking MAL0045 has been found, we hypothesized that another locus contributes to its resistance. However, none with tested progeny. Here, an avrRpt2 EA mutant (Ea1038)...

In a breeding effort to develop salt tolerant (ST) rice varieties by designed QTL pyramiding, large numbers of progenies derived from four crosses between salt- or drought- tolerant BC2F5 IR64 introgression lines, were subjected to severe salt stress, resulting in 422 ST plants. The progeny testing of the selected F3 lines under more severe salt stress resulted in identification of 16 promising...

Pb is a metal which is highly toxic to plants and animals, including humans. High concentrations of Pb have been observed in beans of T. cacao, as well as in its products. In this work, we evaluated the molecular, biochemical, and ultrastructural alterations in mature leaves and primary roots of seedlings of two progenies of T. cacao, obtained from seed germination in different concentrations o...