Correlation among nitrogen and chlorophyll contents of leaves and grain yield of oat

Ciência Rural

Wolff, William Messa¹  Floss, Elmar Luiz¹ 

[1] Universidade de Passo Fundo, Passo Fundo, Brasil

关键词: chlorophyll meter;    thousand grain weight;    grain filling period;    grain filling rate;   

DOI  :  10.1590/S0103-84782008000600003

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

An experiment was conducted at the Passo Fundo University, with the aim of evaluate the correlations among nitrogen contents, chlorophyll contents, grain yield (GY), thousand grain weight (TGW), grain filling period (GFP) and grain filling rate (GFR) in oat cultivars. The experiment was conducted during 2003 agriculture year, with oat cultivars developed by Passo Fundo University, with four replications, at random blocks distribution. The chlorophyll contents, estimated by chlorophyll meter (SPAD 502 model) and chemical method, and nitrogen contents were determined at anthesis stage. At maturation stage, the GY, TGW, GFP and GFR variables were determined. It was observed that there were no significant correlations among chlorophyll contents with nitrogen contents, with GY, TGW and GFP, but there were significant correlations among nitrogen contents and GY, TGW and GFP.

【 授权许可】

CC BY-NC