Strategies

The continued genetic improvement of crop species depends on the introgression of new alleles. Thus, it is imperative that new tools and concepts be developed that would allow the more efficient use of the genetic potential stored in gene banks and in exotic germplasm. Here we review two related molecular breeding strategies: the Advanced Backcross QTL

(AB-QTL) method and the Introgression Line (IL) strategy. These have been developed and tested in tomato as well as several other crops with the goal of increasing the efficiency with which natural biodiversity can be exploited to improve yield, adaptation and quality traits in cultivated crop species, while at the same time creating long-term resources for plant breeders.

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