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

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.


Issue Date:
Jul 29 1990
Publication Type:
Conference Paper/ Presentation
Language:
English
Total Pages:
13




 Record created 2017-07-12, last modified 2017-08-29

Fulltext:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)