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Quantitative studies on the mating system of opium poppy (Papaver somniferum L.)

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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.

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CIMAP publication No. 1086

Communicated by P. M. A. Tigersteldt

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Patra, N.K., Ram, R.S., Chauhan, S.P. et al. Quantitative studies on the mating system of opium poppy (Papaver somniferum L.). Theoret. Appl. Genetics 84, 299–302 (1992). https://doi.org/10.1007/BF00229486

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Key words

  • Papaver somniferum
  • Outcrossing rate
  • Selfing rate
  • Mating system