Several methods are available, but are limited by long processing times, incompatibility with high throughput, expensive reagents or equipment, or the method measures mass instead of viability [ 9- 13].
In addition, it seems that different incompatibility groups present in the same species have different degrees of adaptation to their host genomes, in proportion to the amount of time the incompatibility group has coexisted with the host genome.
Many times the incompatibility of the encoding has deep roots in the processing of the data.
Apple tree breeding is slow and difficult due to long generation times, self-incompatibility, and complex genetics.
At the same time, recessive Dobzhansky Muller incompatibilities between diverged genomes that are masked in the F1s, may be exposed when they become homozygous in the F2 hybrids, reducing mean fitness (by hybrid breakdown) before being purged by selection.
Over time, however, the incompatibility of secular cultures had grown overwhelming.
This could be due to aspects that have already been discussed so far, such as lack of time or the incompatibility of this kind of activity with the end of the semester and not to mention the delivery of assignments of other subjects and the need to study for the final exams.
Many agronomic traits important to almond such as shell hardness, kernel taste, kernel weight, resistance to biotic/abiotic stress, blooming time and self-incompatibility have been investigated, and efforts towards mapping and molecular characterisation of these genes have been made [ 3- 13].
Post-mating isolation occurs when isolated populations accumulate allelic incompatibilities over time [2] [4].
For species that arose through allopatric speciation without exchanging genetic material, the random accumulation of genetic incompatibilities by time might explain their reproductive isolation.
