However, due to its self-incompatibility, populations of doubled haploid lines (DHs) or recombinant inbred lines (RILs) favorable for QTL mapping in other crops are difficult to develop in ryegrass.
These assumptions are a priori not realized in wild cherry because of its gametophytic self-incompatibility system (GSI) in combination with its capacity for clonal propagation.
Owing to the shift from self-incompatibility to self-compatibility in these species, it would be of interest to determine the mating system in Argylia and Tourrettia, two other herbaceous genera of high altitude Andean in the Bignoniaceae.
Although the evolutionary transition from self-incompatibility to self-compatibility has occurred independently many times, evolution in the opposite direction is considered to be extremely rare (Stebbins, 1974; Igic et al., 2006; Goldberg et al., 2010).
Authenticity of the assembled sequences was confirmed by comparing with the BAC (Bacterial Artificial Chromosome) contigs derived from haplotype S1 self-incompatibility (S-) locus of I. trifida registered in NCBI using a NUCmer program followed by a two-dimensional dot plot analysis.
The most profound change in A. kamchatica in contrast to its parental species is the switch from outcrossing (with sporophytic self-incompatibility system) to selfing [ssp. kamchatica: [ 15, 8]; ssp.
These genes have been identified comparing the transcriptomes of laser-microdissected stylar canal cells (SCC) isolated from two genotypes differing for self-incompatibility response ('Comune', a self-incompatible cultivar and 'Monreal', a self- compatible mutation of 'Comune').
However, the selfing rates are not high enough to raise concerns about inbreeding, and the selfing rates could be lowered by collecting seed from genotypes with high self-incompatibility.
Nevertheless, a large fraction of species with hermaphroditic flowers have developed genetic mechanisms that allow the pistil to recognize and reject pollen from genetically related individuals (self-incompatibility; [ 1]), and this may affect the efficient incorporation of such traits into crop varieties.
Although Arabidopsis thaliana is self-compatible, transformation with functional SRK- SCR genes from self-incompatible Arabidopsis species confers the self-incompatibility phenotype to A. thaliana.
