Partitioning of 14C-photoassimllates within seeds of Phaseolus coccineus (Lam.) and Phaseolus coccineus x Phaseolus vulgaris L.

E. E. Hoover, M. L. Brenner, W. A. Brun

Research output: Contribution to journalArticlepeer-review

Abstract

The objective of this study was to determine partitioning within seeds of 14C-photoassimilates at three stages of seed development in two Phaseolus crosses - P. coccineus Lam. selfed, and P. coccineus x P. vulgaris L. Abortion of the interspecific embryos occurred when the seed reached 10 mm seed length. When expressed as sink strength (% dpm) or sink activity (% dmp/d.wt.) there were no differences in partitioning of 14C-photoassimilates when whole seeds were analyzed. If the seed was divided into seed coat, liquid endosperm, and embryo, the sink activity of the interspecific embryo was higher than that of the embryo in the selfed seed. Therefore, abortion of these interspecific Phaselus embryos appeared not to be caused by a lack of photoassimilates.

Original languageEnglish (US)
Pages (from-to)63-69
Number of pages7
JournalPlant Growth Regulation
Volume3
Issue number1
DOIs
StatePublished - Mar 1 1985

Keywords

  • Bean seed development
  • C partitioning
  • embryo abortion
  • interspecific hybridization

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