Traditional Breeding

The three approaches to create more allelopathic crops are the traditional breeding the incorporation of allelopathic properties to hybrid crop and genetic engineering. The results indicated that the heterotic effect on allelopathy was positively significant, so hybridization could be a promising method. At present, no commercial... 

While allelopathy is not covered in this chapter, excellent weed control can be achieved at reduced herbicide rate when used in conjunction with allelopathic rice varieties. Therefore, selection of highly allelopathic crop varieties, either through traditional breeding or using genetic engineering techniques, may also provide novel and low input approaches to weed control. 

Figure 13.5 Differences between 37 potato lines in SDS formation after cooking and cold treating suggests that there is potential for traditional breeding to enhance SDS formation for low Gl potato products (Monro et al., 2008).

Even though there is evidence that organic farming systems are more likely to use rare, native or traditional breeds, there are only few studies that investigate the role of organic livestock in maintaining the genetic diversity of domesticated stock (Bremond 2002). 

In traditional breeding programs, only closely related species can be crossbred, but transgenic techniques allow genetic material to be transferred between completely... 

To use native or traditional breeds presents difficulties if any significant level of volume or regular supply is to be achieved. The establishment of parent flocks providing fertile hatching eggs on a regular supply basis will be required. These parent flocks will have to meet the necessary MAFF testing and inspection schedules. Traditional breeds of meat-type strains may prove acceptable for small-scale production by the self-supply producer, but otherwise impose severe limitations. 

Analysis performed on varieties of flaxseeds collected from different flax growing regions of the world and later grown in Morden, Manitoba, Canada, showed even wider distributions of oleic acid 14-60%, linoleic acid 3-21%, and ALA 31-72% (13). All of these data indicate that within flax, there is a wide distribution of fatty acids, and this variability can be used for developing specialty oils based on traditional breeding and to avoid GMO oils. 

CANOLA FROM TRADITIONAL BREEDING OF OILSEED CROPS... 

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