Measuring the performance of perennial alfalfa with drought tolerance indices

Drought is one of the abiotic stresses that reduces agricultural production in the Mediterranean basin. The selection of crop varieties with performance adapted to water stress has been the subject of numerous studies. In this context, 16 alfalfa (Medicago sativa L.) cultivars from different origins...

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Autores principales:	Bellague,Djamal, M’Hammedi-Bouzina,Mahfoud, Abdelguerfi,Aïssa
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2016
Materias:	Drought index Lower-Cheliff Medicago sativa performance yield
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000300003
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spelling	oai:scielo:S0718-583920160003000032018-10-01Measuring the performance of perennial alfalfa with drought tolerance indicesBellague,DjamalM’Hammedi-Bouzina,MahfoudAbdelguerfi,Aïssa Drought index Lower-Cheliff Medicago sativa performance yield Drought is one of the abiotic stresses that reduces agricultural production in the Mediterranean basin. The selection of crop varieties with performance adapted to water stress has been the subject of numerous studies. In this context, 16 alfalfa (Medicago sativa L.) cultivars from different origins (Algeria, Australia, France, Italy, Morocco, Tunisia, and the United States) were studied under two water regimes (irrigated and rainfed) in the Lower-Cheliff plain of Algeria. The trials focused on the performance of these cultivars according to eight drought tolerance indices. To achieve this, DM yields and water use efficiency (WUE) of a 2-yr experimental study were used. Results showed a regression in mean yields from the third to the fourth year with stress indices of 0.29 and 0.88, respectively. The study of correlations showed that DM yields were well correlated to mean production (MP) and the stress tolerance index (STI). For the two trials and based on yield and STI index, ’Mamuntanas’, ’Ameristand 801S’, ’Erfoud 1’ and ’Ecotipo siciliano’ had the best performance. However, ’Coussouls’, ’Magali’, ’Prosementi’, ’Africaine’, and ’Gabes-2355’ performed poorly. Discriminant function analysis showed that the variables that discriminated in the cultivar groups for yield in the irrigated trial were modified STI, WUE, and the superiority index (Pi). The ANOVA test of cumulative yield and the regression rate confirmed that under environmental conditions similar to the Lower-Cheliff plain, ’Mamuntanas’, ’Ameristand 801S’, ’Erfoud 1’, and ’Ecotipo siciliano’ were perennial and performed under irrigated conditions while ’Erfoud 1’ performed in the rainfed trial.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.76 n.3 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000300003en10.4067/S0718-58392016000300003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Drought index Lower-Cheliff Medicago sativa performance yield
spellingShingle	Drought index Lower-Cheliff Medicago sativa performance yield Bellague,Djamal M’Hammedi-Bouzina,Mahfoud Abdelguerfi,Aïssa Measuring the performance of perennial alfalfa with drought tolerance indices
description	Drought is one of the abiotic stresses that reduces agricultural production in the Mediterranean basin. The selection of crop varieties with performance adapted to water stress has been the subject of numerous studies. In this context, 16 alfalfa (Medicago sativa L.) cultivars from different origins (Algeria, Australia, France, Italy, Morocco, Tunisia, and the United States) were studied under two water regimes (irrigated and rainfed) in the Lower-Cheliff plain of Algeria. The trials focused on the performance of these cultivars according to eight drought tolerance indices. To achieve this, DM yields and water use efficiency (WUE) of a 2-yr experimental study were used. Results showed a regression in mean yields from the third to the fourth year with stress indices of 0.29 and 0.88, respectively. The study of correlations showed that DM yields were well correlated to mean production (MP) and the stress tolerance index (STI). For the two trials and based on yield and STI index, ’Mamuntanas’, ’Ameristand 801S’, ’Erfoud 1’ and ’Ecotipo siciliano’ had the best performance. However, ’Coussouls’, ’Magali’, ’Prosementi’, ’Africaine’, and ’Gabes-2355’ performed poorly. Discriminant function analysis showed that the variables that discriminated in the cultivar groups for yield in the irrigated trial were modified STI, WUE, and the superiority index (Pi). The ANOVA test of cumulative yield and the regression rate confirmed that under environmental conditions similar to the Lower-Cheliff plain, ’Mamuntanas’, ’Ameristand 801S’, ’Erfoud 1’, and ’Ecotipo siciliano’ were perennial and performed under irrigated conditions while ’Erfoud 1’ performed in the rainfed trial.
author	Bellague,Djamal M’Hammedi-Bouzina,Mahfoud Abdelguerfi,Aïssa
author_facet	Bellague,Djamal M’Hammedi-Bouzina,Mahfoud Abdelguerfi,Aïssa
author_sort	Bellague,Djamal
title	Measuring the performance of perennial alfalfa with drought tolerance indices
title_short	Measuring the performance of perennial alfalfa with drought tolerance indices
title_full	Measuring the performance of perennial alfalfa with drought tolerance indices
title_fullStr	Measuring the performance of perennial alfalfa with drought tolerance indices
title_full_unstemmed	Measuring the performance of perennial alfalfa with drought tolerance indices
title_sort	measuring the performance of perennial alfalfa with drought tolerance indices
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000300003
work_keys_str_mv	AT bellaguedjamal measuringtheperformanceofperennialalfalfawithdroughttoleranceindices AT m8217hammedibouzinamahfoud measuringtheperformanceofperennialalfalfawithdroughttoleranceindices AT abdelguerfiaissa measuringtheperformanceofperennialalfalfawithdroughttoleranceindices
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Measuring the performance of perennial alfalfa with drought tolerance indices

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