EFFECT OF DISEASES CONTROL AND CULTIVARS ON THE ROOT HEALTH AND THE ENDOMYCORRHIZAL INFECTION ON WHEAT

Ciência Rural

Alta, Celso¹  Blume, Elena²  Fries, Marcos Rubens¹ 

[1] UFSM, Santa Maria;Purdue University, USA

关键词: diseases control;    wheat cultivars endomycorrhiza;   

DOI  :  10.1590/S0103-84781992000300003

学科分类：农业科学（综合）

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

【 摘 要 】

A field experiment was conducted, in Germany, to evaluate the effect of shoot diseases control, and different wheat cultivars, on the root health and the natural endomycorrhiza fungus infection. The treatments were different shoot diseases control (no control; stalk diseases control; leaf diseases control; stalk and leaf diseases control) and three wheat cultivars (Sorbas, Kraka and Kanzler). The root length, the percentage of healthy roots, as well as the mycorrhizal frequency and intensity were evaluated at four wheat development stages. The chemical control of diseases initially inhibited the root growth, and later increased it, but there were no significant effects on the root health and the mycorrhizal infection. The cultivar Kanzler presented both the highest level of mycorrhiza infection and the largest percent of healthy roots, while Kraka showed the lowest values. A significant positive correlation was obtained between these two variables.

【 授权许可】

CC BY-NC