Use of Rye Chromatins in the Wheat Development.

Wheat-rye translocation lines have provided useful genetic sources in wheat improvement. Translocated rye chromatins such as 1RS and 2RL have conferred important genetic sources of disease and pest resistance, and exhibited good agronomic performance under the unfavorable environment. Our researches are mainly focused on (1) the development of new lines that give high yield, pest resistance, favorite end-use quality, and other characteristics related to enhance crop value and production efficiency via wheat-rye translocations, and (2) elucidation of the significant role of translocated rye chromatins in wheat through transcription analysis. To achieve above research goals, integrative technologies encompassing molecular genetics, proteomics, and conventional breeding methodology were applied. Genetic markers such as ESTs-based 2RL specific markers were developed and incorporated into breeding programs to facilitate selection. Transcripts analysis has also been conducted for the elucidation of functions of genes reside on specific rye chromatin and metabolomic analysis with help of proteome profiles was conducted to elucidate systems responsible for the pest resistance.

Acknowledgement: This study was supported by Technology Development Program for Agriculture and Forestry, Ministry for Agriculture, Forestry and Fisheries, Republic of Korea. The study was also supported by a grant (No. 20070301-034-016-007) from BioGreen 21 Program, Rural Development Administration, Republic of Korea.