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פותח על ידי קלירמאש פתרונות בע"מ -
The effect of root restriction on the incidence of blossom-end rot in bell pepper (Capsicum annuum L.)
Year:
2000
Authors :
אלוני, בנימין
;
.
בר-טל, אשר
;
.
מורשת, שמואל
;
.
קינן, מרים
;
.
קרני, לאה
;
.
Volume :
75
Co-Authors:
Karni, L., Department of Vegetable Crops, Institute of Field and Garden Crops, Volcani Center, Bet Dagan, Israel
Aloni, B., Department of Vegetable Crops, Institute of Field and Garden Crops, Volcani Center, Bet Dagan, Israel
Bar-Tal, A., Dept. Soil Chem., Plant Nutr. E., Inst. Soil, Water and Environ. Sci., Volcani Center, Bet Dagan, Israel
Moreshet, S., Dept. of Environ. Phys. and Irrigat., Inst. Soil, Water and Environ. Sci., Volcani Center, Bet Dagan, Israel
Keinan, M., Dept. Soil Chem., Plant Nutr. E., Inst. Soil, Water and Environ. Sci., Volcani Center, Bet Dagan, Israel
Yao, C., Dept. of Environ. Phys. and Irrigat., Inst. Soil, Water and Environ. Sci., Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
364
To page:
369
(
Total pages:
6
)
Abstract:
Water and calcium uptake are important factors affecting the incidence of fruit blossom-end rot (BER) in tomato and pepper. In the present study an attempt was made to manipulate these factors by severe root pruning and to examine the effect on BER in greenhouse-grown bell pepper (Capsicum annuum L., cv. Mazurka). Pepper plants were transplanted, with the root system split into four separated compartments, each containing a single root quarter. Removal of half, or three quarters, of the root from fruit-bearing plants significantly reduced fruit BER incidence compared with plants with intact roots, especially in fruits which were at the rapid expansion stage at the beginning of the treatments. Removal of three quarters of the root reduced midday leaf water potential, stomatal conductance, and plant height. The number and weight of fruits were not affected by these treatments. Root pruning caused only a slight reduction in stem sap flow, as measured by the heat pulse technique. Calcium concentrations in the distal part of fruits from quarter-root-plants were higher than in fruits from non-pruned plants, whereas magnesium and potassium concentrations were not affected. On the other hand, in the leaves, calcium, magnesium and potassium concentrations were all reduced by root pruning. The K/Ca ratio decreased in the blossom-end of the fruits and increased in the leaves of root-pruned compared with control plants. The results suggest that root pruning did not affect the total uptake of calcium, apparently driven by transpiration, but did enhance calcium partitioning to the developing fruit. Root pruning also affected calcium distribution within the fruit and therefore attenuated BER incidence.
Note:
Related Files :
blossom end rot
Capsicum annuum
Growth inhibition
nutrient concentration
plant growth
tomato
עוד תגיות
תוכן קשור
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DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
29557
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:47
Scientific Publication
The effect of root restriction on the incidence of blossom-end rot in bell pepper (Capsicum annuum L.)
75
Karni, L., Department of Vegetable Crops, Institute of Field and Garden Crops, Volcani Center, Bet Dagan, Israel
Aloni, B., Department of Vegetable Crops, Institute of Field and Garden Crops, Volcani Center, Bet Dagan, Israel
Bar-Tal, A., Dept. Soil Chem., Plant Nutr. E., Inst. Soil, Water and Environ. Sci., Volcani Center, Bet Dagan, Israel
Moreshet, S., Dept. of Environ. Phys. and Irrigat., Inst. Soil, Water and Environ. Sci., Volcani Center, Bet Dagan, Israel
Keinan, M., Dept. Soil Chem., Plant Nutr. E., Inst. Soil, Water and Environ. Sci., Volcani Center, Bet Dagan, Israel
Yao, C., Dept. of Environ. Phys. and Irrigat., Inst. Soil, Water and Environ. Sci., Volcani Center, Bet Dagan, Israel
The effect of root restriction on the incidence of blossom-end rot in bell pepper (Capsicum annuum L.)
Water and calcium uptake are important factors affecting the incidence of fruit blossom-end rot (BER) in tomato and pepper. In the present study an attempt was made to manipulate these factors by severe root pruning and to examine the effect on BER in greenhouse-grown bell pepper (Capsicum annuum L., cv. Mazurka). Pepper plants were transplanted, with the root system split into four separated compartments, each containing a single root quarter. Removal of half, or three quarters, of the root from fruit-bearing plants significantly reduced fruit BER incidence compared with plants with intact roots, especially in fruits which were at the rapid expansion stage at the beginning of the treatments. Removal of three quarters of the root reduced midday leaf water potential, stomatal conductance, and plant height. The number and weight of fruits were not affected by these treatments. Root pruning caused only a slight reduction in stem sap flow, as measured by the heat pulse technique. Calcium concentrations in the distal part of fruits from quarter-root-plants were higher than in fruits from non-pruned plants, whereas magnesium and potassium concentrations were not affected. On the other hand, in the leaves, calcium, magnesium and potassium concentrations were all reduced by root pruning. The K/Ca ratio decreased in the blossom-end of the fruits and increased in the leaves of root-pruned compared with control plants. The results suggest that root pruning did not affect the total uptake of calcium, apparently driven by transpiration, but did enhance calcium partitioning to the developing fruit. Root pruning also affected calcium distribution within the fruit and therefore attenuated BER incidence.
Scientific Publication
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