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An evaluation of seed and seedling drought tolerance screening tests in wheat
Year:
1980
Source of publication :
Euphytica
Authors :
Sinmena, Bebi
;
.
Ziv, Oded
;
.
Volume :
29
Co-Authors:
Blum, A., The Volcani Center, POB 6, Bet Dagan, Israel
Sinmena, B., The Volcani Center, POB 6, Bet Dagan, Israel
Ziv, O., The Volcani Center, POB 6, Bet Dagan, Israel
Facilitators :
From page:
727
To page:
736
(
Total pages:
10
)
Abstract:
A series of experiments was performed in order to evaluate the significance of seed germination and seedling growth in osmotic media as screening methods for drought tolerance. Ten spring wheat (Triticum aestivum L. em Thell.) and one durum wheat (Triticum durumDesf.) were tested under controlled environments, using polyethylene glycol-6000 (PEG) solutions as the moisture stress inducing media. Tolerance in the rate of endosperm utilization, under stress, prior to the onset of germination varied among cultivars. Germination rate or injury to germination at various concentrations of PEG differed significantly among cultivars. Cultivar rating with respect to injury to germination changed with stress levels. Injury to germination did not correlate with endosperm utilization rate in PEG or in water. Germinating seedlings were tolerant to extreme desiccation up to the stage of emergence of the first leaf from the coleoptile. Growth of photosynthesizing seedlings was monitored as they were carried through an increasing concentration gradient of PEG solutions, ranging from -5.9 to -11.3 bars of water potential. Cultivars significantly differed in seedling growth tolerance to increasing levels of water stress. Seedling growth tolerance across cultivars was not correlated with their germination responses under srress. It is concluded that tolerance to water stress in growing seedlings can be screened for by using PEG-containing nutrient solutions. It can not be predicted from germination tests in osmotica. Work was done under a US-Israel Binational Science Foundation (BSF) Grant no. 1654/78. © 1980 H. Veenman En Zonen B.V.
Note:
Related Files :
bread wheat
drought tolerance
germination
Triticum aestivum
Triticum durum
water stress selection
wheat
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Related Content
More details
DOI :
10.1007/BF00023219
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21476
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:44
Scientific Publication
An evaluation of seed and seedling drought tolerance screening tests in wheat
29
Blum, A., The Volcani Center, POB 6, Bet Dagan, Israel
Sinmena, B., The Volcani Center, POB 6, Bet Dagan, Israel
Ziv, O., The Volcani Center, POB 6, Bet Dagan, Israel
An evaluation of seed and seedling drought tolerance screening tests in wheat
A series of experiments was performed in order to evaluate the significance of seed germination and seedling growth in osmotic media as screening methods for drought tolerance. Ten spring wheat (Triticum aestivum L. em Thell.) and one durum wheat (Triticum durumDesf.) were tested under controlled environments, using polyethylene glycol-6000 (PEG) solutions as the moisture stress inducing media. Tolerance in the rate of endosperm utilization, under stress, prior to the onset of germination varied among cultivars. Germination rate or injury to germination at various concentrations of PEG differed significantly among cultivars. Cultivar rating with respect to injury to germination changed with stress levels. Injury to germination did not correlate with endosperm utilization rate in PEG or in water. Germinating seedlings were tolerant to extreme desiccation up to the stage of emergence of the first leaf from the coleoptile. Growth of photosynthesizing seedlings was monitored as they were carried through an increasing concentration gradient of PEG solutions, ranging from -5.9 to -11.3 bars of water potential. Cultivars significantly differed in seedling growth tolerance to increasing levels of water stress. Seedling growth tolerance across cultivars was not correlated with their germination responses under srress. It is concluded that tolerance to water stress in growing seedlings can be screened for by using PEG-containing nutrient solutions. It can not be predicted from germination tests in osmotica. Work was done under a US-Israel Binational Science Foundation (BSF) Grant no. 1654/78. © 1980 H. Veenman En Zonen B.V.
Scientific Publication
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