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אסיף מאגר המחקר החקלאי
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Preliminary investigations into the significance of floral applications of calcium, boron and polyphenols for increased seed set in confection sunflowers (Helianthus annuus L.)
Year:
2008
Source of publication :
Field Crops Research
Authors :
בר, נורית
;
.
ואקנין, יפתח
;
.
Volume :
107
Co-Authors:
Vaknin, Y., Institute of Plant Sciences, Department of Agronomy and Natural Resources, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Barr, N., Institute of Plant Sciences, Department of Agronomy and Natural Resources, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Saranga, Y., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agricultural, Food and Environmental Quality Sciences, P.O. Box 12, Rehovot, 76100, Israel
Facilitators :
From page:
155
To page:
160
(
Total pages:
6
)
Abstract:
One of the major problems of confection sunflowers is low seed set. We studied the relationship between seed set and the origin of pollen, either self or cross, and the effects of stigmatic sprays of calcium nitrate, boric acid and polyphenols on seed set. In a screen-house experiment, seed set was analyzed for three predetermined regions in the sunflower capitulum: distal, median and proximal. Cross-pollination combined with calcium nitrate or boric acid spray significantly improved seed set in the distal region compared with cross-pollination alone or with cross-pollination combined with self-pollination. Neither spray had a significant effect on seed set in the median or proximal regions. Cross-pollination of the proximal region only, with either fresh pollen or 24-h-old pollen, did not improve seed set compared with cross-pollination of the whole capitulum. We found no direct link between pollen germination on the stigma and seed set. However, each region of the capitulum responded differently to self- or cross-pollination. In two open-field experiments, stigmatic applications of calcium nitrate significantly increased seed set by approximately 9% compared with open pollination alone, while stigmatic applications of polyphenols significantly increased seed set by approximately 9% only once, suggesting that commercial yields may be increased by using similar applications. © 2008 Elsevier B.V. All rights reserved.
Note:
Related Files :
Boron
Crops
Flora
germination
Helianthus annuus
phenol
phenols
pollen (external)
pollination
Seed set
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.fcr.2008.02.001
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31803
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:05
Scientific Publication
Preliminary investigations into the significance of floral applications of calcium, boron and polyphenols for increased seed set in confection sunflowers (Helianthus annuus L.)
107
Vaknin, Y., Institute of Plant Sciences, Department of Agronomy and Natural Resources, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Barr, N., Institute of Plant Sciences, Department of Agronomy and Natural Resources, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Saranga, Y., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agricultural, Food and Environmental Quality Sciences, P.O. Box 12, Rehovot, 76100, Israel
Preliminary investigations into the significance of floral applications of calcium, boron and polyphenols for increased seed set in confection sunflowers (Helianthus annuus L.)
One of the major problems of confection sunflowers is low seed set. We studied the relationship between seed set and the origin of pollen, either self or cross, and the effects of stigmatic sprays of calcium nitrate, boric acid and polyphenols on seed set. In a screen-house experiment, seed set was analyzed for three predetermined regions in the sunflower capitulum: distal, median and proximal. Cross-pollination combined with calcium nitrate or boric acid spray significantly improved seed set in the distal region compared with cross-pollination alone or with cross-pollination combined with self-pollination. Neither spray had a significant effect on seed set in the median or proximal regions. Cross-pollination of the proximal region only, with either fresh pollen or 24-h-old pollen, did not improve seed set compared with cross-pollination of the whole capitulum. We found no direct link between pollen germination on the stigma and seed set. However, each region of the capitulum responded differently to self- or cross-pollination. In two open-field experiments, stigmatic applications of calcium nitrate significantly increased seed set by approximately 9% compared with open pollination alone, while stigmatic applications of polyphenols significantly increased seed set by approximately 9% only once, suggesting that commercial yields may be increased by using similar applications. © 2008 Elsevier B.V. All rights reserved.
Scientific Publication
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