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Lucerne (Medicago sativa L.) selected for vigor in a nonsaline environment maintained growth under salt stress
Year:
1989
Authors :
Kapulnik, Yoram
;
.
Volume :
40
Co-Authors:
Kapulnik, Y., Department of Agronomy and Range Science, University of California, Davis, CA, 95616, United States, Institute of Field and Garden Crops, The Volcani Center, Bet Dagan, 50250, Israel
Teuber, L.R., Department of Agronomy and Range Science, University of California, Davis, CA, 95616, United States
Phillips, D.A., Department of Agronomy and Range Science, University of California, Davis, CA, 95616, United States
Facilitators :
From page:
1253
To page:
1259
(
Total pages:
7
)
Abstract:
Lucerne populations HP32 and M69-33 (Medicago sativa L.), which were developed from Hairy Peruvian (HP) and Moapa 69 (M69) by selection for increased growth and N assimilation in nonsaline conditions, also produced more forage at 20% bloom than the original cultivars when moderate salt stress was applied after germination. During the first 45 days of seedling development, the improved populations produced as much total dry matter in the presence of 150 mM NaCl as the original cultivars did in the absence of NaCl. When plants were grown to 20% bloom with 200 mM NaCl, HP32 produced 70% more forage than HP (P=0.01), while M69-33 yielded 26% more forage than M69 (P=0.05). Because all tests were conducted in the absence of combined N, growth of the improved populations was accompanied by increased N2 fixation. Superior growth of HP32 under saline conditions was associated with greater exclusion of Na (P=0.05) and Cl (P=0.08) from the leaves. These results show that selecting for increased growth and N assimilation without salt stress in two populations of lucerne provided potential agronomic benefits in both saline and nonsaline environments. © 1989 CSIRO. All Rights Reserved.
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DOI :
10.1071/AR9891253
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28421
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:39
Scientific Publication
Lucerne (Medicago sativa L.) selected for vigor in a nonsaline environment maintained growth under salt stress
40
Kapulnik, Y., Department of Agronomy and Range Science, University of California, Davis, CA, 95616, United States, Institute of Field and Garden Crops, The Volcani Center, Bet Dagan, 50250, Israel
Teuber, L.R., Department of Agronomy and Range Science, University of California, Davis, CA, 95616, United States
Phillips, D.A., Department of Agronomy and Range Science, University of California, Davis, CA, 95616, United States
Lucerne (Medicago sativa L.) selected for vigor in a nonsaline environment maintained growth under salt stress
Lucerne populations HP32 and M69-33 (Medicago sativa L.), which were developed from Hairy Peruvian (HP) and Moapa 69 (M69) by selection for increased growth and N assimilation in nonsaline conditions, also produced more forage at 20% bloom than the original cultivars when moderate salt stress was applied after germination. During the first 45 days of seedling development, the improved populations produced as much total dry matter in the presence of 150 mM NaCl as the original cultivars did in the absence of NaCl. When plants were grown to 20% bloom with 200 mM NaCl, HP32 produced 70% more forage than HP (P=0.01), while M69-33 yielded 26% more forage than M69 (P=0.05). Because all tests were conducted in the absence of combined N, growth of the improved populations was accompanied by increased N2 fixation. Superior growth of HP32 under saline conditions was associated with greater exclusion of Na (P=0.05) and Cl (P=0.08) from the leaves. These results show that selecting for increased growth and N assimilation without salt stress in two populations of lucerne provided potential agronomic benefits in both saline and nonsaline environments. © 1989 CSIRO. All Rights Reserved.
Scientific Publication
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