Genotypic Variation of Gas Exchange Parameters and Leaf Stable Carbon and Nitrogen Isotopes in Ten Quinoa Cultivars Grown under Drought
Identifieur interne : 000034 ( Main/Exploration ); précédent : 000033; suivant : 000035Genotypic Variation of Gas Exchange Parameters and Leaf Stable Carbon and Nitrogen Isotopes in Ten Quinoa Cultivars Grown under Drought
Auteurs : J. A. González [Argentine] ; M. Bruno [Argentine] ; M. Valoy [Argentine] ; F. E. Prado [Argentine]Source :
- Journal of Agronomy and Crop Science [ 0931-2250 ] ; 2011-04.
English descriptors
- KwdEn :
Abstract
Genotypic variations in leaf gas exchange and grain yield were analysed in 10 highland‐adapted quinoa cultivars grown in the field under drought conditions. Trials took place in an arid mountain region of the Northwest of Argentina (Encalilla, Amaicha del Valle, 22°31′S, 65°59′W). Significant changes in leaf gas exchange and grain yield among cultivars were observed. Our data demonstrate that leaf stomatal conductance to water vapour (gs) is a major determinant of net CO2 assimilation (An) because quinoa cultivars with inherently higher gs were capable of keeping higher photosynthesis rate. Aboveground dry mass and grain yield significantly varied among cultivars. Significant variations also occurred in chlorophyll, N and P content, photosynthetic nitrogen‐use efficiency (PNUE), specific leaf area (SLA), intrinsic water‐use efficiency (iWUE) and carboxylation capacity (An/Ci). Many cultivars gave promissory grain yields with values higher than 2000 kg ha−1, reaching for Sayaña cultivar 3855 kg ha−1. Overall, these data indicate that cultivars, which showed higher photosynthesis and conductances, were also generally more productive. Carbon isotope discrimination (Δ) was positively correlated with the grain yield and negatively with iWUE, but δ15N did not show significant correlations. This study provides a reliable measure of specific responses of quinoa cultivars to drought and it may be valuable in breeding programmes.
Url:
DOI: 10.1111/j.1439-037X.2010.00446.x
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000372
- to stream Istex, to step Curation: 000311
- to stream Istex, to step Checkpoint: 000018
- to stream Main, to step Merge: 000045
- to stream Main, to step Curation: 000045
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Genotypic Variation of Gas Exchange Parameters and Leaf Stable Carbon and Nitrogen Isotopes in Ten Quinoa Cultivars Grown under Drought</title>
<author><name sortKey="Gonzalez, J A" sort="Gonzalez, J A" uniqKey="Gonzalez J" first="J. A." last="González">J. A. González</name>
</author>
<author><name sortKey="Bruno, M" sort="Bruno, M" uniqKey="Bruno M" first="M." last="Bruno">M. Bruno</name>
</author>
<author><name sortKey="Valoy, M" sort="Valoy, M" uniqKey="Valoy M" first="M." last="Valoy">M. Valoy</name>
</author>
<author><name sortKey="Prado, F E" sort="Prado, F E" uniqKey="Prado F" first="F. E." last="Prado">F. E. Prado</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">ISTEX</idno>
<idno type="RBID">ISTEX:0018C5B978F44646FAB3E5922D867C527487A30F</idno>
<date when="2011" year="2011">2011</date>
<idno type="doi">10.1111/j.1439-037X.2010.00446.x</idno>
<idno type="url">https://api.istex.fr/document/0018C5B978F44646FAB3E5922D867C527487A30F/fulltext/pdf</idno>
<idno type="wicri:Area/Istex/Corpus">000372</idno>
<idno type="wicri:Area/Istex/Curation">000311</idno>
<idno type="wicri:Area/Istex/Checkpoint">000018</idno>
<idno type="wicri:doubleKey">0931-2250:2011:Gonzalez J:genotypic:variation:of</idno>
<idno type="wicri:Area/Main/Merge">000045</idno>
<idno type="wicri:Area/Main/Curation">000045</idno>
<idno type="wicri:Area/Main/Exploration">000034</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Genotypic Variation of Gas Exchange Parameters and Leaf Stable Carbon and Nitrogen Isotopes in Ten Quinoa Cultivars Grown under Drought</title>
<author><name sortKey="Gonzalez, J A" sort="Gonzalez, J A" uniqKey="Gonzalez J" first="J. A." last="González">J. A. González</name>
<affiliation wicri:level="1"><country xml:lang="fr">Argentine</country>
<wicri:regionArea> Instituto de Ecología, Fundación Miguel Lillo, Tucumán</wicri:regionArea>
<wicri:noRegion>Tucumán</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Bruno, M" sort="Bruno, M" uniqKey="Bruno M" first="M." last="Bruno">M. Bruno</name>
<affiliation wicri:level="1"><country xml:lang="fr">Argentine</country>
<wicri:regionArea> Instituto de Ecología, Fundación Miguel Lillo, Tucumán</wicri:regionArea>
<wicri:noRegion>Tucumán</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Valoy, M" sort="Valoy, M" uniqKey="Valoy M" first="M." last="Valoy">M. Valoy</name>
<affiliation wicri:level="1"><country xml:lang="fr">Argentine</country>
<wicri:regionArea> Instituto de Ecología, Fundación Miguel Lillo, Tucumán</wicri:regionArea>
<wicri:noRegion>Tucumán</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Prado, F E" sort="Prado, F E" uniqKey="Prado F" first="F. E." last="Prado">F. E. Prado</name>
<affiliation wicri:level="1"><country xml:lang="fr">Argentine</country>
<wicri:regionArea> Cátedra de Fisiología Vegetal, Facultad de Ciencias Naturales e IML, Universidad Nacional de Tucumán, Tucumán</wicri:regionArea>
<wicri:noRegion>Tucumán</wicri:noRegion>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series><title level="j">Journal of Agronomy and Crop Science</title>
<idno type="ISSN">0931-2250</idno>
<idno type="eISSN">1439-037X</idno>
<imprint><publisher>Blackwell Publishing Ltd</publisher>
<pubPlace>Oxford, UK</pubPlace>
<date type="published" when="2011-04">2011-04</date>
<biblScope unit="volume">197</biblScope>
<biblScope unit="issue">2</biblScope>
<biblScope unit="page" from="81">81</biblScope>
<biblScope unit="page" to="93">93</biblScope>
</imprint>
<idno type="ISSN">0931-2250</idno>
</series>
<idno type="istex">0018C5B978F44646FAB3E5922D867C527487A30F</idno>
<idno type="DOI">10.1111/j.1439-037X.2010.00446.x</idno>
<idno type="ArticleID">JAC446</idno>
</biblStruct>
</sourceDesc>
<seriesStmt><idno type="ISSN">0931-2250</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>chlorophyll</term>
<term>gas exchange</term>
<term>grain yield</term>
<term>isotope discrimination</term>
<term>quinoa</term>
<term>water‐use efficiency</term>
</keywords>
</textClass>
<langUsage><language ident="en">en</language>
</langUsage>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Genotypic variations in leaf gas exchange and grain yield were analysed in 10 highland‐adapted quinoa cultivars grown in the field under drought conditions. Trials took place in an arid mountain region of the Northwest of Argentina (Encalilla, Amaicha del Valle, 22°31′S, 65°59′W). Significant changes in leaf gas exchange and grain yield among cultivars were observed. Our data demonstrate that leaf stomatal conductance to water vapour (gs) is a major determinant of net CO2 assimilation (An) because quinoa cultivars with inherently higher gs were capable of keeping higher photosynthesis rate. Aboveground dry mass and grain yield significantly varied among cultivars. Significant variations also occurred in chlorophyll, N and P content, photosynthetic nitrogen‐use efficiency (PNUE), specific leaf area (SLA), intrinsic water‐use efficiency (iWUE) and carboxylation capacity (An/Ci). Many cultivars gave promissory grain yields with values higher than 2000 kg ha−1, reaching for Sayaña cultivar 3855 kg ha−1. Overall, these data indicate that cultivars, which showed higher photosynthesis and conductances, were also generally more productive. Carbon isotope discrimination (Δ) was positively correlated with the grain yield and negatively with iWUE, but δ15N did not show significant correlations. This study provides a reliable measure of specific responses of quinoa cultivars to drought and it may be valuable in breeding programmes.</div>
</front>
</TEI>
<affiliations><list><country><li>Argentine</li>
</country>
</list>
<tree><country name="Argentine"><noRegion><name sortKey="Gonzalez, J A" sort="Gonzalez, J A" uniqKey="Gonzalez J" first="J. A." last="González">J. A. González</name>
</noRegion>
<name sortKey="Bruno, M" sort="Bruno, M" uniqKey="Bruno M" first="M." last="Bruno">M. Bruno</name>
<name sortKey="Prado, F E" sort="Prado, F E" uniqKey="Prado F" first="F. E." last="Prado">F. E. Prado</name>
<name sortKey="Valoy, M" sort="Valoy, M" uniqKey="Valoy M" first="M." last="Valoy">M. Valoy</name>
</country>
</tree>
</affiliations>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Musique/explor/MonteverdiV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000034 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000034 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Wicri/Musique |area= MonteverdiV1 |flux= Main |étape= Exploration |type= RBID |clé= ISTEX:0018C5B978F44646FAB3E5922D867C527487A30F |texte= Genotypic Variation of Gas Exchange Parameters and Leaf Stable Carbon and Nitrogen Isotopes in Ten Quinoa Cultivars Grown under Drought }}
This area was generated with Dilib version V0.6.21. |