Plant size, geitonogamy and seed set in Ipomopsis aggregata

  title={Plant size, geitonogamy and seed set in Ipomopsis aggregata},
  author={Tom J. de Jong and Nickolas M Waser and Mary V. Price and Richard M. Ring},
We used powdered fluorescent dyes to estimate receipt of self vs. outcross pollen in the self-incompatible species Ipomopsis aggregata (Polemoniaceae). Flowers on small and large plants received equal amounts of outcross pollen, whereas flowers on large plants received more self pollen, so the proportion of self pollen delivered through geitonogamy increased with plant size. In natural populations emasculation of all flowers on a plant raised average seed set per flower from 5.19 to 6.99 and… CONTINUE READING

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