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Imprint
A SMART breeding approach for high yielding hybrid rye varieties with novel plant architecture as a response to the climate change
Project
Project code: JKI-ZL-08-1114
Contract period: 01.09.2010
- 30.09.2013
Purpose of research: Applied research
Model calculation on the climate change show that in particular the main growing areas of the rye will be significantly affected by a decreasing summer rainfall as well as rising temperatures. In this project, test cross performance of rye will be assessed to evaluate the extent of water use and nutrient efficiency of hybrid rye can be increased using innovative strategies of selection as well as modification of the plant architecture. The aim of this project is to increase the level of yield and yield stability in hybrid rye under changed climate conditions. In order to assess a dominant dwarf gene, closely linked DNA markers will be developed as a selection tool using a comparative genetics approach of gene mapping and the sequence information from model genomes. With these markers it will be possible to separate the desired dwarf gene from undesired genes and to efficiently eliminate the potential genetic load of recessive mutant alleles originating from the donor and with a negative influence on yield. Through the analysis of a distinct gene pool of rye, the project will contribute to expand the genetic diversity in the range of hybrid varieties of rye and, thus, to reduce the risk of genetic vulnerability of hybrid varieties.
Results
ln this project, a comparative genomics approachwas successfully applied to develop novel molecular markers for the dominant dwarfing gene Ddw1 originating from a non-adapted plant genetic resource of rye. This SMART breeding strategy for Ddw1 offers a new option to realize a central breeding goal in rye breeding and allows to improve Iodging resistance of this traditional crop more efficiently than possible before. As the most important factor in the intensification of crop production, hybrid rye varieties with genetically determined plant height will improve the competitiveness of German agriculture under changing climatic Gonditions. The project provides an innovative Gontribution to the use the biodiversity existing in genetic resources of rye and thus relates to the main objective 2/main task 1 of the BMEL research plan. Through the analysis of a distinct gene pool of rye, the project Gontributes to expand the genetic diversity of hybrid rye varieties and, thus, to reduce the risk of genetic vulnerability of rye h brids.
Section overview
Subjects
- Plant Breeding
- Climate Change
Framework programme
Funding programme
Excutive institution
Institute for Breeding Research on Agricultural Crops (JKI-ZL)
