Articles
A STUDY OF THE GENETIC PARAMETERS IN A WILD BRASSICA OLERACEA L. POPULATION*
Various genetic parameters(tm, ts, F & pj) were estimated by running the multilocus estimation program (MLT Program) which was developed by Kermit Ritland.
Three alleles, one common allele with frequency pc=0.905(0.018) and two rare alleles pa=0.047(0.012) & pb=0.048(0.013), were found at pgi-2. One common allele pb=0.547(0.026) and two less common alleles pa=0.176(0.023) & pc=0.277 (0.024) of pgm-2 were detected.
These isozyme marker gene frequencies data are useful to the germplasm conservation and the ecologic aspects associated with this population.
The valid estimation of outcrossing rate, tm=0.819 (0.072), indicates that about 20% of progenies are derived from selfing, about 80% are from outcrossing.
It suggests that high outcross rate may be caused by the existence of self-incompatibility genes in the population, and this is important to store genetic diversity.
Certain degree of selfing in the self-incompatibility population also have the evolutionary advantage for the survival of the population if the selection pressure was high.