Citrus Genomics and Breeding
Citrus genomics has made rapid progress during the last four years, including development of powerful new mapping tools, an extensive database of expressed sequences, a low coverage (partial) genome sequence for sweet orange, and powerful microarray platforms to assess gene expression patterns. These tools have been applied to study the genetic control of several important traits, with much more work still in progress. However, collaboration and data access remain restrictive relative to that in the most successful crop plant genomics systems and it is clear that this has restricted success and reduced funding for larger efforts such as full-genome sequencing. The justification of citrus genomics research is that it will enable more effective breeding. Many citrus breeding programs include both mutation breeding focused primarily on low-seed content, and hybridization directed at development of low-seeded scion cultivars and rootstocks with better disease resistance and adaptation. Genomics research can inform breeding programs about the difficulty in finding hybrids with specific combinations of traits, improve the efficiency of selection, and identify genes that are candidates for silencing or other types of modification. However, it will generally not speed up citrus breeding because juvenility, slow propagation, and the need for evaluation of selections for several fruiting seasons make citrus breeding a slow endeavor.
Roose ML
Department of Botany and Plant Sciences, University of California,Riverside, CA 92521, USA, mikeal
国际会议
11th International Citrus Congress(第11届国际柑橘大会)
武汉
英文
30
2008-10-01（万方平台首次上网日期，不代表论文的发表时间）