Characterization of Chromosome Inheritance of the Intergeneric BC2 and BC3 Progeny between Saccharum spp. and Erianthus arundinaceus

PLoS One. 2015 Jul 21;10(7):e0133722. doi: 10.1371/journal.pone.0133722. eCollection 2015.

Abstract

Erianthus arundinaceus (E. arundinaceus) has many desirable agronomic traits for sugarcane improvement, such as high biomass, vigor, rationing ability, tolerance to drought, and water logging, as well as resistance to pests and disease. To investigate the introgression of the E. arundinaceus genome into sugarcane in the higher generations, intergeneric BC2 and BC3 progeny generated between Saccharum spp. and E. arundinaceus were studied using the genomic in situ hybridization (GISH) technique. The results showed that the BC2 and BC3 generations resulted from n + n chromosome transmission. Furthermore, chromosome translocation occurred at terminal fragments from the E. arundinaceus chromosome in some progeny of Saccharum spp. and E. arundinaceus. Notably, the translocated chromosomes could be stably transmitted to their progeny. This study illustrates the characterization of chromosome inheritance of the intergeneric BC2 and BC3 progeny between Saccharum spp. and E. arundinaceus. This work could provide more useful molecular cytogenetic information for the germplasm resources of E. arundinaceus, and may promote further understanding of the germplasm resources of E. arundinaceus for sugarcane breeders to accelerate its progress in sugarcane commercial breeding.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chromosomes, Plant / genetics*
  • Inbreeding*
  • Saccharum / genetics*
  • Translocation, Genetic

Grants and funding

This work was funded by National Natural Science Foundation of China (31401440, http://www.nsfc.gov.cn/), the earmarked fund for the Modern Agriculture Technology of China (CARS-20-1-5). This project is also supported by Guangxi Natural Science Foundation (2014GXNSFFA118002, http://gxnsf.gxsti.net/stms/login.jsp). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.