ISSN:
1432-2242
Keywords:
Papaver somniferum
;
Outcrossing rate
;
Selfing rate
;
Mating system
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary Nearly 400 individuals at two locations and over a number of years were crossed and subsequently scored for selfing versus outcrossing in eight monohybrid populations of opium poppy (Papaver somniferum). Two different marker loci, petal colour (R/r) and capsule size (B/b) were used to determine the male gametes that had effected fertilizations in F2 recessives (rr and bb). The estimates of the outcrossing parameter α were found to vary with year, location and for the marker locus used (α range: 0.0988–0.3704). Study of two dihybrid crosses involving the two loci simultaneously, further confirmed that outcrossing at the R/r locus was significantly greater than that at the B/b locus. The nature of the outcrossing was, in general, nonrandom. Selfmg predominated in this species; however, there was a high frequency of natural outcrossing for generating variations in P. somniferum.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00229486
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