Stomatal conductance of maize under water and nitrogen deficits

Pesquisa Agropecuária Brasileira

Leonardo Oliveira Medici²  Ricardo Antunes Azevedo¹  Luciano Pasqualoto Canellas¹  Altair Toledo Machado¹  Carlos Pimentel¹ 

[1] ,Universidade Federal Rural do Rio de Janeiro Dep. de Ciências Fisiológicas Seropédica RJ ,Brazil

关键词: Zea mays;    drought tolerance;    anthesis-silking interval;    Zea mays;    tolerância à seca;    sincronia de florescimento;   

DOI  :  10.1590/S0100-204X2007000400020

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate the effect of drought and nitrogen (N) stresses on stomatal conductance of three maize cultivars grown in the field. The stomatal conductance of Sol da Manhã variety (BRS 4157) and Pioneer 6875 hybrid, under drought and high N, was lower than under drought and low N, which indicates drought tolerance, since these cultivars did not exhibit reduction in grain yield by drought, as observed for Amarelão variety, which flowered under more severe drought. 'Sol da Manhã' exhibited shorter anthesis-silking interval under high N than under low N, an additional indication of tolerance.

【 授权许可】

CC BY   
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