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פותח על ידי קלירמאש פתרונות בע"מ -
Relationship between carbohydrate concentration and root growth potential in coniferous seedlings from three climates during cold hardening and dehardening
Year:
2000
Authors :
עצמון, ניר
;
.
Volume :
20
Co-Authors:
Tinus, R.W., Southern Research Station, USDA Forest Service, 2500 South Pine Knoll Drive, Flagstaff, AZ 86001, United States
Burr, K.E., Southern Research Station, USDA Forest Service, 2500 South Pine Knoll Drive, Flagstaff, AZ 86001, United States
Atzmon, N., Southern Research Station, USDA Forest Service, 2500 South Pine Knoll Drive, Flagstaff, AZ 86001, United States
Riov, J., Southern Research Station, USDA Forest Service, 2500 South Pine Knoll Drive, Flagstaff, AZ 86001, United States
Facilitators :
From page:
1097
To page:
1104
(
Total pages:
8
)
Abstract:
Greenhouse-cultured, container-grown seedlings of Aleppo pine (Pinus halepensis Mill.), radiata pine (Pinus radiata D. Don), and interior Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco) were cold acclimated and deacclimated in growth chambers over 24 weeks. Needle and root cold hardiness and root growth potential (RGP) were measured weekly. Root, needle and stem analyses for soluble sugars and starch were performed biweekly. In all tissues, there was a close correspondence between cold hardiness and the absolute concentration of soluble sugars, as well as between the increase and decrease in concentration of soluble sugars during cold hardening and dehardening, respectively, supporting the theory that soluble sugars function as cryoprotectants in plant tissues. The magnitude of starch concentration did not parallel the magnitude of the cold hardiness attained, and changes in starch concentration were related to production and consumption factors, rather than timing of changes in cold hardiness. The rise and fall of RGP paralleled the rise and fall of total carbohydrate concentration in roots. The behavior of the three species was surprisingly similar, considering the different climates to which they are adapted.
Note:
Related Files :
Carbohydrate
carbohydrates
freezing
Growth, Development and Aging
Pinus halepensis
Radiata pine
trees
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31631
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:04
Scientific Publication
Relationship between carbohydrate concentration and root growth potential in coniferous seedlings from three climates during cold hardening and dehardening
20
Tinus, R.W., Southern Research Station, USDA Forest Service, 2500 South Pine Knoll Drive, Flagstaff, AZ 86001, United States
Burr, K.E., Southern Research Station, USDA Forest Service, 2500 South Pine Knoll Drive, Flagstaff, AZ 86001, United States
Atzmon, N., Southern Research Station, USDA Forest Service, 2500 South Pine Knoll Drive, Flagstaff, AZ 86001, United States
Riov, J., Southern Research Station, USDA Forest Service, 2500 South Pine Knoll Drive, Flagstaff, AZ 86001, United States
Relationship between carbohydrate concentration and root growth potential in coniferous seedlings from three climates during cold hardening and dehardening
Greenhouse-cultured, container-grown seedlings of Aleppo pine (Pinus halepensis Mill.), radiata pine (Pinus radiata D. Don), and interior Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco) were cold acclimated and deacclimated in growth chambers over 24 weeks. Needle and root cold hardiness and root growth potential (RGP) were measured weekly. Root, needle and stem analyses for soluble sugars and starch were performed biweekly. In all tissues, there was a close correspondence between cold hardiness and the absolute concentration of soluble sugars, as well as between the increase and decrease in concentration of soluble sugars during cold hardening and dehardening, respectively, supporting the theory that soluble sugars function as cryoprotectants in plant tissues. The magnitude of starch concentration did not parallel the magnitude of the cold hardiness attained, and changes in starch concentration were related to production and consumption factors, rather than timing of changes in cold hardiness. The rise and fall of RGP paralleled the rise and fall of total carbohydrate concentration in roots. The behavior of the three species was surprisingly similar, considering the different climates to which they are adapted.
Scientific Publication
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