8 research outputs found
MORPHOLOGICAL AND MOLECULAR EVALUATION OF THE FAR EAST FRUIT GENETIC RESOURCES OF <i> LONICERA CAERULEA </i> L.
Field studies of honeysuckle (Lonicera caerulea L. s.l.) and material for investigation (91 herbarium accessions; 20 scion samples; and fruits for detailed morphological description, organoleptic and molecular analyses) have been collected in the north-eastern part of the area of honeysuckle distribution, in Kamchatka and Sakhalin regions. All coenopopulations have been characterized ecologically, geobotanically, and phytosociologically. Factors threatening natural coenopopulations have been estimated, and these data preconditioned recommendations for honeysuckle in situ conservation. Fruits of 20 Russian honeysuckle cultivars have been included in comparative molecular assessment together with fruits from natural ecotypes. As a result of AFLP analysis, all investigated material was divided into three groups: two groups include samples L. caerulea, collected in Kamchatka, and the majority of the investigated honeysuckle cultivated forms, while the third group unites only genotypes of the sakhalin plants
Morphological and molecular evaluation of the Far East fruit genetic resources of Lonicera caerulea L.—vegetation, ethnobotany, use and conservation
High levels of genetic and genotypic diversity in field populations of the barley pathogen Ramularia collo-cygni
Efficient elimination of virus complex from garlic (Allium sativum L.) by cryotherapy of shoot tips
Multiple Interkingdom Horizontal Gene Transfers in Pyrenophora and Closely Related Species and Their Contributions to Phytopathogenic Lifestyles
Mutations in target genes of succinate dehydrogenase inhibitors and demethylation inhibitors in Ramularia collo-cygni in Europe
Allium genetic resources
An overview of the developments in Allium genetic resources during the past 25 years is presented in this chapter. A first important development has been the introduction and further development of web-based genebanking information systems (e.g. GENESYS, PLANTSEARCH), which facilitated the exchange of data to a large extent between Allium collection holders worldwide. These information systems made it possible to obtain an overview of the Allium genetic resources managed worldwide and identify the gaps in collections which still need to be filled, especially in the face of the ongoing genetic erosion. A second important area of progress has been the development of new methods for the maintenance of Allium germplasm, especially cryopreservation. This method has made it possible to maintain Allium accessions in a cheap and effective way. The method is especially important for the conservation of vegetatively maintained germplasm. Other developments in Allium genebanking are the improvement of the health status of the germplasm kept in the collections and the continuing characterization and evaluation of germplasm, which stimulates the utilization of the Allium genetic resources held in genebanks. Significant changes could also be observed with respect to acquisition and exchange of plant genetic resources due to many and complex new regulations on the legal and organizational levels due to the adoption of the CBD and IT-PGRFA by many countries. It makes the handling of the plant accessions safer and more consistent but also more circumstantial. Finally, we need to underline that in an increasingly changing world with all the threats of genetic erosion and extinction due to disappearance of traditional cultivation methods, devastation of our environment and climatic change, the conservation of genetic resources is of prime importance for agriculture. Especially for breeders, a highly diverse genepool of a crop plant is an invaluable treasure. The importance to keep this treasure will no doubt become even more important in the future