Boron distribution and mobility in navel orange grafted on citrange and trifoliate orange
Identifieur interne : 001625 ( Main/Exploration ); précédent : 001624; suivant : 001626Boron distribution and mobility in navel orange grafted on citrange and trifoliate orange
Auteurs : Gui-Dong Liu [République populaire de Chine] ; Rui-Dong Wang [République populaire de Chine] ; Li-Shu Wu [République populaire de Chine] ; Shu-Ang Peng [République populaire de Chine] ; Yun-Hua Wang [République populaire de Chine] ; Cun-Cang Jiang [République populaire de Chine]Source :
- Plant and soil [ 0032-079X ] ; 2012.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Background and Aims In China, boron (B) deficiency is frequently observed in citrus orchards, and is responsible for considerable loss of productivity and quality. A better understanding of B distribution and remobilization within orange plants is important for developing programs in rational fertilization and effective mitigation of B-deficiency. In the present study (i) the distribution of newly absorbed B and (ii) the translocation of foliar-applied B in 'Newhall' navel orange grafted on citrange and trifoliate orange was investigated. Methods 10B was applied in the nutrient solution or sprayed on the lower-old leaves of both grafted plants for 35 days. Results In the 10B uptake experiment, citrange-grafted plants showed higher newly acquired total B content and B concentration in both lower-old and upper-old leaves than those in trifoliate-orange-grafted plants. The newly absorbed B in the new leaves was much higher than that in the lower-old leaves and the upper-old leaves in both grafted plants. Foliar application of 10B to the lower-old leaves resulted in B translocation to the upper-old leaves and the new leaves with preference mainly to the new leaves in both citrange and trifoliate orange when root B supply was relatively low. However, 10B sprayed to the lower-old leaves not only did not increase the abundance percentage of 10B in the root, but also reduced B concentration and the total B content in the root. Conclusions The results suggest that foliar-applied B can be translocated within both grafted plants, which might also depress B uptake from root medium with low B supply. Rootstock can affect the B distribution in old leaves in navel orange, and newly absorbed B was preferentially transported to the new leaves.
Affiliations:
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Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Boron</term>
<term>Citroncirus webberi</term>
<term>Citrus sinensis</term>
<term>Distribution</term>
<term>Graft</term>
<term>Isotopes</term>
<term>Mobility</term>
<term>Orange</term>
<term>Poncirus trifoliata</term>
<term>Soil plant relation</term>
<term>Translocation</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Distribution</term>
<term>Mobilité</term>
<term>Greffe</term>
<term>Translocation</term>
<term>Isotope</term>
<term>Relation sol plante</term>
<term>Citrus sinensis</term>
<term>Citroncirus webberi</term>
<term>Poncirus trifoliata</term>
<term>Bore</term>
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<front><div type="abstract" xml:lang="en">Background and Aims In China, boron (B) deficiency is frequently observed in citrus orchards, and is responsible for considerable loss of productivity and quality. A better understanding of B distribution and remobilization within orange plants is important for developing programs in rational fertilization and effective mitigation of B-deficiency. In the present study (i) the distribution of newly absorbed B and (ii) the translocation of foliar-applied B in 'Newhall' navel orange grafted on citrange and trifoliate orange was investigated. Methods <sup>10</sup>
B was applied in the nutrient solution or sprayed on the lower-old leaves of both grafted plants for 35 days. Results In the <sup>10</sup>
B uptake experiment, citrange-grafted plants showed higher newly acquired total B content and B concentration in both lower-old and upper-old leaves than those in trifoliate-orange-grafted plants. The newly absorbed B in the new leaves was much higher than that in the lower-old leaves and the upper-old leaves in both grafted plants. Foliar application of <sup>10</sup>
B to the lower-old leaves resulted in B translocation to the upper-old leaves and the new leaves with preference mainly to the new leaves in both citrange and trifoliate orange when root B supply was relatively low. However, <sup>10</sup>
B sprayed to the lower-old leaves not only did not increase the abundance percentage of <sup>10</sup>
B in the root, but also reduced B concentration and the total B content in the root. Conclusions The results suggest that foliar-applied B can be translocated within both grafted plants, which might also depress B uptake from root medium with low B supply. Rootstock can affect the B distribution in old leaves in navel orange, and newly absorbed B was preferentially transported to the new leaves.</div>
</front>
</TEI>
<affiliations><list><country><li>République populaire de Chine</li>
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<tree><country name="République populaire de Chine"><noRegion><name sortKey="Liu, Gui Dong" sort="Liu, Gui Dong" uniqKey="Liu G" first="Gui-Dong" last="Liu">Gui-Dong Liu</name>
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<name sortKey="Jiang, Cun Cang" sort="Jiang, Cun Cang" uniqKey="Jiang C" first="Cun-Cang" last="Jiang">Cun-Cang Jiang</name>
<name sortKey="Peng, Shu Ang" sort="Peng, Shu Ang" uniqKey="Peng S" first="Shu-Ang" last="Peng">Shu-Ang Peng</name>
<name sortKey="Wang, Rui Dong" sort="Wang, Rui Dong" uniqKey="Wang R" first="Rui-Dong" last="Wang">Rui-Dong Wang</name>
<name sortKey="Wang, Yun Hua" sort="Wang, Yun Hua" uniqKey="Wang Y" first="Yun-Hua" last="Wang">Yun-Hua Wang</name>
<name sortKey="Wu, Li Shu" sort="Wu, Li Shu" uniqKey="Wu L" first="Li-Shu" last="Wu">Li-Shu Wu</name>
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