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ABSCISSION OF REPRODUCTIVE STRUCTURES IN PIGEONPEA (Caianus calan (L.) Millsp.)

Author

Listed:
  • Sirju-Charran, G.
  • Ganpat, M.M.
  • Mustapha, W.

Abstract

The percentage abscission of reproductive structures in dwarf pigeonpea cultivars (UW 10, UW 17 and UW 26) was found to be high (83 - 87%) and was similar to those recorded for tall indeterminate cultivars. Variations in the percentage abscission were observed for inflorescences in different regions in the canopy. These variations differed with the cultivar. Higher abscission rates were recorded for flowers developing at the most proximal node and buds at the distal ends of the inflorescence. Flowers at the anthesis and the post-anthesis stages of development abscised in greatest quantities. Forty-eight percent of the flowers which abscised at either anthesis or post-anthesis stages of development from node three on the inflorescence had at least one of their ovules fertilized. These results are discussed in relation to proposed theories of abscission: inadequate supply of photosynthates, hormonal signals, incomplete development of translocatory tissues and unsuccessful fertilization of ovules.

Suggested Citation

  • Sirju-Charran, G. & Ganpat, M.M. & Mustapha, W., 1990. "ABSCISSION OF REPRODUCTIVE STRUCTURES IN PIGEONPEA (Caianus calan (L.) Millsp.)," 26th Annual Meeting, July 29 to August 4, 1990, Mayaguez, Puerto Rico 259343, Caribbean Food Crops Society.
    • Handle: RePEc:ags:cfcs90:259343
    DOI: 10.22004/ag.econ.259343
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