Sulfur affects root growth and improves nitrogen recovery and internal efficiency in wheat

被引：32

作者：

Carciochi, Walter D. ^{[1
,2
]}

Divito, Guillermo A. ^{[1
,3
]}

Fernandez, Lucrecia A. ^{[1
,2
]}

Echeverria, Hernan E. ^{[1
,4
]}

机构：

[1] Univ Nacl Mar del Plata UNMdP, Dept Prod Vegetal, Balcarce, Argentina

[2] Agencia Nacl Promoc Cient & Tecnol, Buenos Aires, DF, Argentina

[3] Consejo Nacl Invest Cient & Tecn CONICET, Mar Del Plata, Buenos Aires, Argentina

[4] EEA INTA, Dept Agron, Buenos Aires, DF, Argentina

来源：

JOURNAL OF PLANT NUTRITION | 2017年 / 40卷 / 09期

关键词：

nitrogen uptake; nitrogen use efficiency; root architecture; sulfur uptake; MAGNESIUM-DEFICIENCY; BIOMASS ALLOCATION; BRASSICA-OLERACEA; FIELD CONDITIONS; ATMOSPHERIC H2S; SULFATE UPTAKE; BARLEY PLANTS; CROP GROWTH; NITRATE; SHOOT;

D O I：

10.1080/01904167.2016.1187740

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Wheat plants were cultivated in pots with the objective of evaluating the effect of two sulfur (S) rates (+S and -S) on (i) shoot growth, S and nitrogen (N) uptake and nitrogen use efficiency (NUE) and (ii) root growth and architecture and its relations with S and N uptake. Plant samplings were at Z39, Z51 and Z92 stages. Shoot mass and NUE were greater in +S treatment at the three stages. -S treatment increased root growth at Z39 (14% more length and 16% more tips) in comparison with +S, but the opposite occurred at Z51 (31% less area and 42% less mass). S uptake per unit root mass, area and length were greater in +S treatment at Z39 and Z51. A similar pattern was determined for nitrogen uptake (Nu) at Z39, but the opposite occurred at Z51. This indicates that Nu is mainly controlled by shoot growth and not by root growth.

引用

页码：1231 / 1242

页数：12

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