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Bumblebees (Bombus terrestris) improve ‘hass’ avocado (persea americana) pollination
Year:
2021
Source of publication :
Plants
Authors :
Eshed, Ravit
;
.
Irihimovitch, Vered
;
.
Rosen, Ada
;
.
Sherman, Amir
;
.
Sisai, Isaac
;
.
Zviran, Tali
;
.
Volume :
Co-Authors:
Raphael A. Stern

Ada Rozen

Ravit Eshed

Tali Zviran

Isaac Sisai

Amir Sherman

Vered Irihimovitch

Gal Sapir

 

Facilitators :
From page:
0
To page:
0
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Total pages:
1
)
Abstract:

Pollination is limiting for avocado production. We examined whether adding bumblebees (BBs; ca. 10 hives/ha) to conventional honeybees (HB; 5 hives/ha) would improve ‘Hass’ avocado pollination and yields. A preliminary trial (2017/18) in an avocado orchard with four consecutive rows of ‘Hass’ followed by one row of ‘Ettinger’ serving as a pollenizer (20% ‘Ettinger’) showed a considerable increase in ‘Hass’ yield in rows adjacent to (up to 80 m from) the BB hives vs. distant rows (=controls). In 2018/19, the trials were extended to three additional orchards. A significant yield increase was obtained in the BB hive-adjacent trees compared to BB hive-distant ones. Similar results were obtained in 2019/20, in experiments conducted throughout the country. The SNP analysis, to determine the parents of ‘Hass’ fruit at varying distances from the BB hives, showed no differences in the cross-pollination rate (‘Hass’ × ‘Ettinger’). However, pollination rates and the number of germinating pollen grains per stigma decreased with distance from the hives, and correlated to the negative gradient in yield. Taken together, our data suggest that adding BB hives to ‘Hass’ avocado orchards, at ca. 10 hives/ha resulting in 0.5–1.0 BB visits/tree per min, increases pollination and, accordingly, total yield. 

Note:
Related Files :
Avocado (Persea americana Mill.)
Bumblebee (Bombus terrestris)
honeybee (Apis mellifera)
pollination
yield
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Related Content
More details
DOI :
10.3390/plants10071372
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
55582
Last updated date:
02/03/2022 17:27
Creation date:
13/07/2021 17:20
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Scientific Publication
Bumblebees (Bombus terrestris) improve ‘hass’ avocado (persea americana) pollination
Raphael A. Stern

Ada Rozen

Ravit Eshed

Tali Zviran

Isaac Sisai

Amir Sherman

Vered Irihimovitch

Gal Sapir

 

Bumblebees (Bombus terrestris) improve ‘hass’ avocado (persea americana) pollination

Pollination is limiting for avocado production. We examined whether adding bumblebees (BBs; ca. 10 hives/ha) to conventional honeybees (HB; 5 hives/ha) would improve ‘Hass’ avocado pollination and yields. A preliminary trial (2017/18) in an avocado orchard with four consecutive rows of ‘Hass’ followed by one row of ‘Ettinger’ serving as a pollenizer (20% ‘Ettinger’) showed a considerable increase in ‘Hass’ yield in rows adjacent to (up to 80 m from) the BB hives vs. distant rows (=controls). In 2018/19, the trials were extended to three additional orchards. A significant yield increase was obtained in the BB hive-adjacent trees compared to BB hive-distant ones. Similar results were obtained in 2019/20, in experiments conducted throughout the country. The SNP analysis, to determine the parents of ‘Hass’ fruit at varying distances from the BB hives, showed no differences in the cross-pollination rate (‘Hass’ × ‘Ettinger’). However, pollination rates and the number of germinating pollen grains per stigma decreased with distance from the hives, and correlated to the negative gradient in yield. Taken together, our data suggest that adding BB hives to ‘Hass’ avocado orchards, at ca. 10 hives/ha resulting in 0.5–1.0 BB visits/tree per min, increases pollination and, accordingly, total yield. 

Scientific Publication
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