Alleviation of drought stress in winter wheat by late foliar application of zinc, boron, and manganese
Identifieur interne : 001553 ( Main/Exploration ); précédent : 001552; suivant : 001554Alleviation of drought stress in winter wheat by late foliar application of zinc, boron, and manganese
Auteurs : Md. Rezaul Karim [République populaire de Chine] ; Yue-Qiang Zhang [République populaire de Chine] ; Rong-Rong Zhao [République populaire de Chine] ; Xin-Ping Chen [République populaire de Chine] ; Fu-Suo Zhang [République populaire de Chine] ; Chun-Qin Zou [République populaire de Chine]Source :
- Journal of Plant Nutrition and Soil Science [ 1436-8730 ] ; 2012-02.
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Abstract
In many regions, drought during flowering and grain‐filling inhibits micronutrient acquisition by roots resulting in yield losses and low micronutrient concentrations in cereal grains. A field and a greenhouse experiment were conducted to study the effect of foliar applications of zinc (Zn), boron (B), and manganese (Mn) at late growth stages of winter wheat (Triticum aestivum L.) grown with or without drought stress from booting to maturity. Foliar applications of Zn, B, and Mn did not affect grain yield in the absence of drought. However, under drought, foliar application of Zn and B in the field increased grain yield (15% and 19%, respectively) as well as raising grain Zn and B concentration, while Zn and Mn sprays in the greenhouse increased grain yield (13% and 10%, respectively), and also increased grain Zn and Mn concentrations. Furthermore, under drought stress both in the field and greenhouse experiment the rate of photosynthesis, pollen viability, number of fertile spikes, number of grains per spike, and particularly water‐use efficiency (WUE) were increased by late foliar application of micronutrients. These results indicate that by increasing WUE foliar application of Zn, B, and Mn at booting to anthesis can reduce the harmful effects of drought stress that often occur during the late stages of winter wheat production. These findings therefore are of high relevance for farmers' practice, the extension service, and fertilizer industry.
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DOI: 10.1002/jpln.201100141
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Bodenk.</title><idno type="ISSN">1436-8730</idno><idno type="eISSN">1522-2624</idno><imprint><publisher>WILEY‐VCH Verlag</publisher><pubPlace>Weinheim</pubPlace><date type="published" when="2012-02">2012-02</date><biblScope unit="volume">175</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="142">142</biblScope><biblScope unit="page" to="151">151</biblScope></imprint><idno type="ISSN">1436-8730</idno></series><idno type="istex">F089857E68C92214681576B6926190B12474A63D</idno><idno type="DOI">10.1002/jpln.201100141</idno><idno type="ArticleID">JPLN201100141</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1436-8730</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Triticum aestivum</term><term>micronutrients</term><term>water‐use efficiency</term><term>yield</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In many regions, drought during flowering and grain‐filling inhibits micronutrient acquisition by roots resulting in yield losses and low micronutrient concentrations in cereal grains. A field and a greenhouse experiment were conducted to study the effect of foliar applications of zinc (Zn), boron (B), and manganese (Mn) at late growth stages of winter wheat (Triticum aestivum L.) grown with or without drought stress from booting to maturity. Foliar applications of Zn, B, and Mn did not affect grain yield in the absence of drought. However, under drought, foliar application of Zn and B in the field increased grain yield (15% and 19%, respectively) as well as raising grain Zn and B concentration, while Zn and Mn sprays in the greenhouse increased grain yield (13% and 10%, respectively), and also increased grain Zn and Mn concentrations. Furthermore, under drought stress both in the field and greenhouse experiment the rate of photosynthesis, pollen viability, number of fertile spikes, number of grains per spike, and particularly water‐use efficiency (WUE) were increased by late foliar application of micronutrients. These results indicate that by increasing WUE foliar application of Zn, B, and Mn at booting to anthesis can reduce the harmful effects of drought stress that often occur during the late stages of winter wheat production. These findings therefore are of high relevance for farmers' practice, the extension service, and fertilizer industry.</div></front></TEI><affiliations><list><country><li>République populaire de Chine</li></country><settlement><li>Pékin</li></settlement></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Karim, Md Rezaul" sort="Karim, Md Rezaul" uniqKey="Karim M" first="Md. Rezaul" last="Karim">Md. Rezaul Karim</name></noRegion><name sortKey="Chen, Xin Ing" sort="Chen, Xin Ing" uniqKey="Chen X" first="Xin-Ping" last="Chen">Xin-Ping Chen</name><name sortKey="Zhang, Fu Uo" sort="Zhang, Fu Uo" uniqKey="Zhang F" first="Fu-Suo" last="Zhang">Fu-Suo Zhang</name><name sortKey="Zhang, Yue Iang" sort="Zhang, Yue Iang" uniqKey="Zhang Y" first="Yue-Qiang" last="Zhang">Yue-Qiang Zhang</name><name sortKey="Zhao, Rong Ong" sort="Zhao, Rong Ong" uniqKey="Zhao R" first="Rong-Rong" last="Zhao">Rong-Rong Zhao</name><name sortKey="Zou, Chun In" sort="Zou, Chun In" uniqKey="Zou C" first="Chun-Qin" last="Zou">Chun-Qin Zou</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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