STRUCTURAL-CHANGES IN CONIFER NEEDLES DUE TO MG-DEFICIENCY AND K-DEFICIENCY

被引：40

作者：

FINK, S

机构：

[1] Institut fuer Biologie I, Tuebingen, D-7400

来源：

FERTILIZER RESEARCH | 1991年 / 27卷 / 01期

关键词：

FOREST DECLINE; NEEDLE ANATOMY; CATION DEFICIENCIES; ULTRASTRUCTURAL CHANGES; CHLOROPLAST DEFORMATION; PHLOEM NECROSIS;

D O I：

10.1007/BF01048605

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Needles from Norway spruces (Picea abies Karst.) with symptoms of Mg- or K-deficiency were investigated anatomically. Besides pronounced changes in the structure of the chloroplasts and partial accumulation of starch in the mesophyll cells, premature necrosis and collapse of the sieve cells in the vascular bundles was the most pronounced structural symptom. The same pattern of development was found in yellow needles of mature trees in the field with symptoms of 'new-type forest decline' as in needles from young trees grown in quartz-sand culture with controlled induction of deficiencies. The possible consequences of these structural symptoms for the physiology of trees growing under these deficiencies and their involvement in recent 'forest decline' are discussed.

引用

页码：23 / 27

页数：5

共 26 条

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