Advanced Search
Syntax
Search...
Volcani treasures
About
Terms of use
Manage
Community:
אסיף מאגר המחקר החקלאי
Powered by ClearMash Solutions Ltd -
Pollination of confection sunflowers (Heliantus annuus L.) by honey bees (Apis mellifera L.)
Year:
2002
Source of publication :
American Bee Journal
Authors :
Dag, Arnon
;
.
Volume :
142
Co-Authors:

Lior, E.
Afik, O.

Facilitators :
From page:
443
To page:
445
(
Total pages:
3
)
Abstract:
The aim of the study was to describe bee activity levels on various confection varieties in two different growing areas in Israel, and to learn about the different varieties' dependence on bee pollination. There was no significant effect of site location on the bees' activity, but there was a significant effect of cultivar - the average number of bees per blooming head ranged between 0.5 and 1.1. The differences in bee activity were probably due to differences in nectar production and/or accessibility of the nectar to bees. Bagged blooming heads exhibited 0-1% setting, except for one exception, which set 16%. Exposed heads set 49-86% of the seeds. Those results indicate the dependency of the tested confection varieties on bee activity for commercial production. Hand cross-pollination of the exposed blooming heads did not result in increased yield, which indicates that the bees' activity in the field was adequate, and that the empty seeds in the exposed heads probably resulted from physiological characteristics of the cultivars rather than limitations in their pollination.
Note:
Related Files :
Apis mellifera
Helianthus annuus
Show More
Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31301
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:01
Scientific Publication
Pollination of confection sunflowers (Heliantus annuus L.) by honey bees (Apis mellifera L.)
142

Lior, E.
Afik, O.

Pollination of confection sunflowers (Heliantus annuus L.) by honey bees (Apis mellifera L.)
The aim of the study was to describe bee activity levels on various confection varieties in two different growing areas in Israel, and to learn about the different varieties' dependence on bee pollination. There was no significant effect of site location on the bees' activity, but there was a significant effect of cultivar - the average number of bees per blooming head ranged between 0.5 and 1.1. The differences in bee activity were probably due to differences in nectar production and/or accessibility of the nectar to bees. Bagged blooming heads exhibited 0-1% setting, except for one exception, which set 16%. Exposed heads set 49-86% of the seeds. Those results indicate the dependency of the tested confection varieties on bee activity for commercial production. Hand cross-pollination of the exposed blooming heads did not result in increased yield, which indicates that the bees' activity in the field was adequate, and that the empty seeds in the exposed heads probably resulted from physiological characteristics of the cultivars rather than limitations in their pollination.
Scientific Publication
נגישות
menu      
You may also be interested in