136
Views
10
CrossRef citations to date
0
Altmetric
Original Articles

Kinetics of Zinc Uptake and Anatomy of Roots and Leaves of Coffee Trees as Affected by Zinc Nutrition

, &
Pages 2101-2112 | Received 04 Apr 2004, Accepted 07 Jan 2005, Published online: 14 Feb 2007
 

ABSTRACT

Zinc (Zn) uptake kinetics and root and leaf anatomy were studied in coffee trees grown in nutrient solutions with or without Zn. Leaves and roots were sampled and cuts were made in the medium part of the leaves and in root tips and observed under an optical microscope. Plants grown without Zn showed an increase in root and in root stele diameter. There was also an increase in epidermis thickness and in the cross-sectional area of the cortex and stele due to Zn deficiency, but the diameter of xylem vessels was decreased. An increase in root cortex and stele diameter provided for an increased surface for nutrient uptake. Accordingly, Cmin was decreased from 13.8 to 3.4 μ mol L−1 and Vmax increased from 0.50 to 2.1 μmol cm−2 h−1.

Notes

*Significant (P < 0.05);

**(P < 0.01).

*after 24 hours;

** after 36 hours.

***Values expressed in μ mol cm−2 h−1.

*Difference between the first and last samplings.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 495.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.