MANIPULATION OF PLOIDY FOR KIWIFRUIT BREEDING AND THE STUDY OF ACTINIDIA GENOMICS
Kiwifruit belong to the genus Actinidia. The genus contains nearly 60 species, only two of which are commercially cultivated on a large scale and these have been only relatively recently introduced into cultivation. Dioecism and the range of ploidy levels, coupled with a high basic chromosome number, seriously hinder the study of the genetics of Actinidia and breeding using traditional gene introgression. In vitro manipulation of ploidy levels, production of haploids and/or polyhaploids by culture of pollen or unfertilized embryos, chromosome doubling and protoplast fusion could bypass these barriers, which hinder traditional cross breeding. We describe the application of these technologies and the contribution they can make to the development of new and novel types of kiwifruit and to investigations on the genomics and evolution of Actinidia.
Jin-Hu Wu, (2012). MANIPULATION OF PLOIDY FOR KIWIFRUIT BREEDING AND THE STUDY OF ACTINIDIA GENOMICS. Acta Hortic. 961, 539-546
anther culture, chromosome doubling, endosperm, embryo, genomics, haploid, in vitro breeding, polyploidy, protoplast fusion