Title
Secondary polyploids, heterosis, and evolutionary crop breeding for further improvement of the plantain and banana (Musa spp. L) genome
Date Issued
01 June 1997
Access level
metadata only access
Resource Type
journal article
Author(s)
Ortiz R.
Publisher(s)
Springer Nature
Abstract
Several primary tetraploids with desirable attributes have been selected by Musa breeding programs. Diploid parental stocks have become available for further genetic improvement of the Musa genome. Hence, new genome manipulations should be tested before they become routine in breeding programs. Through comparison of the performance of triploid landraces, their primary tetraploid hybrids and secondary polyploid derivatives, plus diploid ancestors, it was found that the production of secondary triploids (TM3x) is more rewarding than developing secondary tetraploids. TM3x achieved significant high polyploid-parent heterosis for yield either by maximizing heterozygosity through crosses between unrelated parents, or by selection of linkats in hybrids derived from crosses between euploid full-sibs. There were significant differences in bunch weight between full-sib secondary polyploids, which suggested that specific combining ability should be re-defined considering not only a specific cross combination but also the individual performance within each cross. This paper proposes a crop-breeding strategy which takes into consideration the process of domestication of banana and plantain. Current data suggest that this type of evolutionary breeding approach may be feasible in Musa.
Start page
1113
End page
1120
Volume
94
Issue
8
Language
English
OCDE Knowledge area
Agricultura
Scopus EID
2-s2.0-0030745068
Source
Theoretical and Applied Genetics
ISSN of the container
00405752
Sources of information: Directorio de Producción Científica Scopus