The interim results of many years work on the creation pear varieties - genetic dwarfs and dwarf rootstocks an intensive type with a high adaptive potential suitable for setting gardens in conditions Central region Russia are presented. At first stage obtained from crossing highly winter-resistant disease-resistant donors various origins monogenic determined dwarfism, group resistance to diseas...

I n recent issues of The Journal several articles have appeared which decribe The American Chestnut Foundation’s breeding program for backcrossing the blight resistance of Chinese chestnut into American chestnut (Hebard 1994a). The breeding program involves repeated crossing of selected C. dentata x C. mollissima hybrids and progeny to C. dentata (American chestnut), hence reconstituting the C....

We developed 22 SSRs by using 3 approaches, RAHM (random amplified hybridization microsatellites), 5’ anchored PCR methods and an enriched genomic library. Seventy of 22 SSRs could be successfully amplified for Pyrus spp., which showed highly polymorphic. Sixty Asian pear accessions from 6 Pyrus species were genetically identified by 9 SSR markers with a total of 133 putative alleles. The SSR m...

Aroma is an appreciated fruit property, and volatile flavor plays a key role in determining the perception acceptability of products by consumers. However, metabolite composition that contributes to aroma quality unclear. In this study, we detected 645 organic compounds ‘Panguxiang’ pear total, including esters, alcohols, alkanes, acids, ketones, terpenes aldehydes. addition, levels sugars, aci...

many characteristics of pear trees such as growth, fruit size and yield, are influenced by the genetic characteristic of the rootstocks. in iran, mainly european pear seedlings (pyrus communis l.) are used as the rootstock in the pear orchards. thus, evaluation of pear seedling rootstocks is an important task. this experiment was conducted in 2009 and 2010 growing seasons in order to explore th...

Enriched beverage prepared by supplementing pear juice with jamun pulp was assessed for antioxidant activity and quality. Jamun pulp was supplemented at the levels of 5,10,15,20 and 25 per cent and optimized on the basis of sensory evaluation and color characteristics. Sensory scores were highest for pear juice supplemented with 20 per cent jamun pulp and was further chosen for storage studies....

Genetic maps are essential tools for pear genetics and genomics research. In this study, we first constructed an integrated simple sequence repeat (SSR) and single nucleotide polymorphism (SNP)-based consensus genetic map for pear based on common SSR markers between nine published maps. A total of 5,085 markers, including 1,232 SSRs and 3,853 SNPs, were localized on a consensus map spanning 3,2...

In plants, 4-coumarate:coenzyme A ligases (4CLs), comprising some of the adenylate-forming enzymes, are key enzymes involved in regulating lignin metabolism and the biosynthesis of flavonoids and other secondary metabolites. Although several 4CL-related proteins were shown to play roles in secondary metabolism, no comprehensive study on 4CL-related genes in the pear and other Rosaceae species h...