Although the functions of the five genes in this section were not evaluated based on agronomic traits, these genes may have the potential to play key roles in domestication process.
These interactions in some cases involve artificial selection, resulting in documentable domestication processes (Colunga-GarcíaMarín and Zizumbo-Villarreal 1993; Casas et al. 1996, 2007).
"This is the leading edge in a shift in thinking about domestication processes".
A management plan was developed that allows maximization of fruit yields while progressively improving the quality characteristics of the extractively used population in an in situ domestication process.
One of the most significant events in the domestication process was the change in the expression of tga1, enabling the sealed, indurated fruitcase of teosinte to open up, allow a naked grain, and form a less lignified, softer glume.
In particular, flowering-time genes are likely to have been involved in the domestication process to permit rice to grow in northern areas, although recent breeding steps may conceal older changes that occurred during rice domestication Fig. 2 Genome-wide restriction fragment length polymorphism (RFLP) patterns at 179 loci.
Moreover, the PS0·01 markers that were classified as not involved in the domestication process were actually all located in areas of the genome where additional QTLs related to domestication were most recently identified (number of pods and seeds per plant, seed weight, yield and days to flowering) (Blair et al., 2006).
S. cheesmaniae and S. galapagense accessions have not taken part in the domestication process of tomato and were not included in this analysis.
Based on these results, we report the identification of wild alleles that contribute positive variations to complex traits, we outline several regions of the peanut genome involved in the domestication process and we compare the distribution of QTLs in the subgenomes.
Full understanding of the mechanisms of seed-shattering related genes, including SH4, will help to uncover the domestication processes in rice, where seed shattering plays a key role.
