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פותח על ידי קלירמאש פתרונות בע"מ -
Effect of GA-sensitivity on wheat early vigor and yield components under deep sowing
Year:
2015
Source of publication :
Frontiers in Plant Science
Authors :
בן-דוד, רואי
;
.
נאשף, כמאל
;
.
Volume :
6
Co-Authors:
Amram, A., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
Fadida-Myers, A., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel, Institute of Plant Sciences, Agricultural Research Organization – Volcani Center, Bet Dagan, Israel
Golan, G., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
Nashef, K., Institute of Plant Sciences, Agricultural Research Organization – Volcani Center, Bet Dagan, Israel
Ben-David, R., Institute of Plant Sciences, Agricultural Research Organization – Volcani Center, Bet Dagan, Israel
Peleg, Z., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
Facilitators :
From page:
1
To page:
10
(
Total pages:
10
)
Abstract:
Establishment of seedlings is a key factor in achievement of uniform field stands and, consequently, stable yields. Under Mediterranean conditions, soil moisture in the upper layer is limited and seedlings may be exposed to frequent dehydration events. The presence of the Reduced height (Rht)-B1b and Rht-D1b semi-dominant dwarfing alleles results in insensitivity to gibberellin (GAI) and, hence, poor emergence from deep sowing. Introduction of alternative dwarfing genes and, thereby, preservation of the gibberellin response (GAR) and coleoptile length, contributes to better emergence from deep sowing. Initially 47 wheat cultivars carrying different Rht alleles were screened for their ability to emerge from deep sowing, and then 17 of them were selected for detailed physiological characterization in the field. The modern wheat lines containing GAI alleles showed significantly lower percentages of emergence from deep sowing than the GAR lines, i.e., 52 and 74%, respectively. Differences in early developmental stages were associated with grain yield, as indicated by a reduction of 37.3% in the modern GAI cultivars. Our results demonstrate the potential of alternative dwarfing genes for improving seedling establishment and grain yields in Mediterranean-like environments. © 2015 Amram, Fadida-Myers, Golan, Nashef, Ben-David and Peleg.
Note:
Related Files :
Coleoptile length
Rht
Seedling establishment
Semi-dwarf wheat
Triticum aestivum
Yield components
עוד תגיות
תוכן קשור
More details
DOI :
10.3389/fpls.2015.00487
Article number:
487
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25418
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:14
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Scientific Publication
Effect of GA-sensitivity on wheat early vigor and yield components under deep sowing
6
Amram, A., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
Fadida-Myers, A., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel, Institute of Plant Sciences, Agricultural Research Organization – Volcani Center, Bet Dagan, Israel
Golan, G., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
Nashef, K., Institute of Plant Sciences, Agricultural Research Organization – Volcani Center, Bet Dagan, Israel
Ben-David, R., Institute of Plant Sciences, Agricultural Research Organization – Volcani Center, Bet Dagan, Israel
Peleg, Z., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
Effect of GA-sensitivity on wheat early vigor and yield components under deep sowing
Establishment of seedlings is a key factor in achievement of uniform field stands and, consequently, stable yields. Under Mediterranean conditions, soil moisture in the upper layer is limited and seedlings may be exposed to frequent dehydration events. The presence of the Reduced height (Rht)-B1b and Rht-D1b semi-dominant dwarfing alleles results in insensitivity to gibberellin (GAI) and, hence, poor emergence from deep sowing. Introduction of alternative dwarfing genes and, thereby, preservation of the gibberellin response (GAR) and coleoptile length, contributes to better emergence from deep sowing. Initially 47 wheat cultivars carrying different Rht alleles were screened for their ability to emerge from deep sowing, and then 17 of them were selected for detailed physiological characterization in the field. The modern wheat lines containing GAI alleles showed significantly lower percentages of emergence from deep sowing than the GAR lines, i.e., 52 and 74%, respectively. Differences in early developmental stages were associated with grain yield, as indicated by a reduction of 37.3% in the modern GAI cultivars. Our results demonstrate the potential of alternative dwarfing genes for improving seedling establishment and grain yields in Mediterranean-like environments. © 2015 Amram, Fadida-Myers, Golan, Nashef, Ben-David and Peleg.
Scientific Publication
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