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פותח על ידי קלירמאש פתרונות בע"מ -
The effect of low night temperatures on carbohydrates metabolism in developing pollen grains of pepper in relation to their number and functioning
Year:
2004
Source of publication :
Scientia Horticulturae
Authors :
רוזנפלד, קתרינה
;
.
שקד, רחל
;
.
Volume :
102
Co-Authors:
Shaked, R., Department of Vegetable Crops, Institute of Field and Garden Crops, ARO, Volcani Ctr., P.O. Box 6, 50250, Bet Dagan, Israel
Rosenfeld, K., Department of Vegetable Crops, Institute of Field and Garden Crops, ARO, Volcani Ctr., P.O. Box 6, 50250, Bet Dagan, Israel
Pressman, E., Department of Vegetable Crops, Institute of Field and Garden Crops, ARO, Volcani Ctr., P.O. Box 6, 50250, Bet Dagan, Israel
Facilitators :
From page:
29
To page:
36
(
Total pages:
8
)
Abstract:
Four pepper cultivars were grown under winter low night temperature (LNT) conditions (night temperature of 10±2 °C and day temperature which did not exceed 24 °C) in a greenhouse in Bet Dagan, Israel. In all four cultivars, LNT conditions caused a decrease in the number of pollen grains and a reduction in their germinability, in comparison with pollen of control plants grown in another greenhouse under higher temperature conditions (night temperature of 20±2 °C and similar day temperatures). Analysis of carbohydrates content in the later stages of pollen development revealed that LNT caused a reduction in starch concentration 4 days before anthesis (A-4), and in the concentrations of sucrose and reducing sugars (glucose and fructose) at anthesis (A). It is suggested that low temperatures hinder pollen functioning in pepper, by interfering with starch accumulation at A-4, thereby decreasing the concentrations of soluble sugars in the mature pollen grains. The fruits of the LNT-grown plants, except for cv. Devilla, were smaller, seedless and misshapen. The reason for the ability of cv. Devilla to set seeds and normal fruits under LNT conditions need further investigation. © 2004 Published by Elsevier B.V.
Note:
Related Files :
Bet Dagan
Carbohydrate
Central District
cultivars
Israel
metabolism
Pollen viability
Starch
sucrose
temperature
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.scienta.2003.12.007
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
32428
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:09
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Scientific Publication
The effect of low night temperatures on carbohydrates metabolism in developing pollen grains of pepper in relation to their number and functioning
102
Shaked, R., Department of Vegetable Crops, Institute of Field and Garden Crops, ARO, Volcani Ctr., P.O. Box 6, 50250, Bet Dagan, Israel
Rosenfeld, K., Department of Vegetable Crops, Institute of Field and Garden Crops, ARO, Volcani Ctr., P.O. Box 6, 50250, Bet Dagan, Israel
Pressman, E., Department of Vegetable Crops, Institute of Field and Garden Crops, ARO, Volcani Ctr., P.O. Box 6, 50250, Bet Dagan, Israel
The effect of low night temperatures on carbohydrates metabolism in developing pollen grains of pepper in relation to their number and functioning
Four pepper cultivars were grown under winter low night temperature (LNT) conditions (night temperature of 10±2 °C and day temperature which did not exceed 24 °C) in a greenhouse in Bet Dagan, Israel. In all four cultivars, LNT conditions caused a decrease in the number of pollen grains and a reduction in their germinability, in comparison with pollen of control plants grown in another greenhouse under higher temperature conditions (night temperature of 20±2 °C and similar day temperatures). Analysis of carbohydrates content in the later stages of pollen development revealed that LNT caused a reduction in starch concentration 4 days before anthesis (A-4), and in the concentrations of sucrose and reducing sugars (glucose and fructose) at anthesis (A). It is suggested that low temperatures hinder pollen functioning in pepper, by interfering with starch accumulation at A-4, thereby decreasing the concentrations of soluble sugars in the mature pollen grains. The fruits of the LNT-grown plants, except for cv. Devilla, were smaller, seedless and misshapen. The reason for the ability of cv. Devilla to set seeds and normal fruits under LNT conditions need further investigation. © 2004 Published by Elsevier B.V.
Scientific Publication
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