Yield and osmotic adjustment capacity of barley under terminal water-stress conditions
This paper reports the influence of the osmotic adjustment capacity and turgor potential (TP) on tolerance to drought in 12 cultivated genotypes, six breeding lines and six cultivars of barley (Hordeum vulgare L.) under terminal water-stress conditions. When the crops reached the flag leaf stage, half of the experimental plots in which they were grown were submitted to water stress treatment and the remainder maintained under optimal irrigation conditions. Differences were seen in the osmotic adjustment, relative water content (RWC) and water potential (WP) of the different genotypes. Two of the breeding lines showed the greatest osmotic adjustment capacities, maintaining their TPs better than the other genotypes studied. A positive, significant correlation was found between yield and osmotic adjustment capacity, RWC and WP under water-stress conditions. Osmotic adjustment capacity and TP were linearly related, indicating that as water stress increases osmotic adjustment favours the maintenance of higher TPs. Significant correlations were found between osmotic adjustment capacity and grain filling rate and grain yield. Under conditions of terminal water stress, yield was negatively correlated with the number of days to ear emergence; no correlation was found between osmotic adjustment capacity and earliness. Early ear emergence, a good osmotic adjustment capacity and high RWC values all contributed to yield increases under terminal water-stress conditions. © 2008 The Authors.
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Format: | artículo biblioteca |
Language: | English |
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Wiley
2008
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Subjects: | Barley, Drought, Osmotic adjustment, Precocity, Turgor potential, |
Online Access: | http://hdl.handle.net/20.500.12792/1831 http://hdl.handle.net/10261/291808 |
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dig-inia-es-10261-2918082023-02-20T07:22:27Z Yield and osmotic adjustment capacity of barley under terminal water-stress conditions González, A. Martín, I. Ayerbe, L. Barley Drought Osmotic adjustment Precocity Turgor potential This paper reports the influence of the osmotic adjustment capacity and turgor potential (TP) on tolerance to drought in 12 cultivated genotypes, six breeding lines and six cultivars of barley (Hordeum vulgare L.) under terminal water-stress conditions. When the crops reached the flag leaf stage, half of the experimental plots in which they were grown were submitted to water stress treatment and the remainder maintained under optimal irrigation conditions. Differences were seen in the osmotic adjustment, relative water content (RWC) and water potential (WP) of the different genotypes. Two of the breeding lines showed the greatest osmotic adjustment capacities, maintaining their TPs better than the other genotypes studied. A positive, significant correlation was found between yield and osmotic adjustment capacity, RWC and WP under water-stress conditions. Osmotic adjustment capacity and TP were linearly related, indicating that as water stress increases osmotic adjustment favours the maintenance of higher TPs. Significant correlations were found between osmotic adjustment capacity and grain filling rate and grain yield. Under conditions of terminal water stress, yield was negatively correlated with the number of days to ear emergence; no correlation was found between osmotic adjustment capacity and earliness. Early ear emergence, a good osmotic adjustment capacity and high RWC values all contributed to yield increases under terminal water-stress conditions. © 2008 The Authors. 2023-02-20T07:22:27Z 2023-02-20T07:22:27Z 2008 artículo Journal of Agronomy and Crop Science 194: 81-91 (2008) 0931-2250 http://hdl.handle.net/20.500.12792/1831 http://hdl.handle.net/10261/291808 10.1111/j.1439-037X.2007.00289.x 1439-037X en none Wiley |
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Barley Drought Osmotic adjustment Precocity Turgor potential Barley Drought Osmotic adjustment Precocity Turgor potential |
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Barley Drought Osmotic adjustment Precocity Turgor potential Barley Drought Osmotic adjustment Precocity Turgor potential González, A. Martín, I. Ayerbe, L. Yield and osmotic adjustment capacity of barley under terminal water-stress conditions |
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This paper reports the influence of the osmotic adjustment capacity and turgor potential (TP) on tolerance to drought in 12 cultivated genotypes, six breeding lines and six cultivars of barley (Hordeum vulgare L.) under terminal water-stress conditions. When the crops reached the flag leaf stage, half of the experimental plots in which they were grown were submitted to water stress treatment and the remainder maintained under optimal irrigation conditions. Differences were seen in the osmotic adjustment, relative water content (RWC) and water potential (WP) of the different genotypes. Two of the breeding lines showed the greatest osmotic adjustment capacities, maintaining their TPs better than the other genotypes studied. A positive, significant correlation was found between yield and osmotic adjustment capacity, RWC and WP under water-stress conditions. Osmotic adjustment capacity and TP were linearly related, indicating that as water stress increases osmotic adjustment favours the maintenance of higher TPs. Significant correlations were found between osmotic adjustment capacity and grain filling rate and grain yield. Under conditions of terminal water stress, yield was negatively correlated with the number of days to ear emergence; no correlation was found between osmotic adjustment capacity and earliness. Early ear emergence, a good osmotic adjustment capacity and high RWC values all contributed to yield increases under terminal water-stress conditions. © 2008 The Authors. |
format |
artículo |
topic_facet |
Barley Drought Osmotic adjustment Precocity Turgor potential |
author |
González, A. Martín, I. Ayerbe, L. |
author_facet |
González, A. Martín, I. Ayerbe, L. |
author_sort |
González, A. |
title |
Yield and osmotic adjustment capacity of barley under terminal water-stress conditions |
title_short |
Yield and osmotic adjustment capacity of barley under terminal water-stress conditions |
title_full |
Yield and osmotic adjustment capacity of barley under terminal water-stress conditions |
title_fullStr |
Yield and osmotic adjustment capacity of barley under terminal water-stress conditions |
title_full_unstemmed |
Yield and osmotic adjustment capacity of barley under terminal water-stress conditions |
title_sort |
yield and osmotic adjustment capacity of barley under terminal water-stress conditions |
publisher |
Wiley |
publishDate |
2008 |
url |
http://hdl.handle.net/20.500.12792/1831 http://hdl.handle.net/10261/291808 |
work_keys_str_mv |
AT gonzaleza yieldandosmoticadjustmentcapacityofbarleyunderterminalwaterstressconditions AT martini yieldandosmoticadjustmentcapacityofbarleyunderterminalwaterstressconditions AT ayerbel yieldandosmoticadjustmentcapacityofbarleyunderterminalwaterstressconditions |
_version_ |
1767603257919668224 |