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Effects of Phosphorus Deficiency on Anatomical Structures in Maize (zea Mays L.)

BIMAL CHANDRA SARKER
Department of Botany, Ananda Mohan College, Mymensingh, Bangladesh.

J. L. KARMOKER
Department of Botany, University of Dhaka, Dhaka-1000, Bangladesh

PARVEEN RASHID
Department of Botany, University of Dhaka, Dhaka-1000, Bangladesh

Abstract/ Executive Summary:

Anatomical response of maize (Zea mays L.) to phosphorus deficiency grown in sand culture and half strength Hoagland solution revealed that phosphorus deficiency caused a decrease in diameter of the root and stem as well as thickness of the leaf. Epidermal cells of the root, stem and leaf became thickened, cortical zone of root and stem was reduced, endodermal and pericycle cells became smaller and thick walled in phosphorus deficient plants. The prominent structural changes due to phosphorus deficiency occurred in the vascular system where the vascular area is decreased with less number of xylem vessels and smaller size of the cavity. Phosphorus deficiency also resulted in decreased number and smaller sized stomata in leaves.

Keywords: Phosphorus deficiency, Anatomy, Maize, Zea mays

Location: Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur.

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Maize

Objectives:

To study the effect of phosphorus deficiency on anatomical structure in maize.

Methodology:

Seeds of maize (Zea mays L. var. Barnali) were collected from Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur. Plants were grown in sand culture (Hewitt 1966) under phosphorus rich and phosphorus deficient modified half-strength Hoagland nutrient solution (Hoagland and Arnon 1950). Five plants were raised in each pot and there were ten pots for each treatment placed in randomized block design. The sand of control pots were moistened with +P nutrient solution twice in a week while that of phosphorus deficient pots with no phosphorus in the nutrient solution. Root (3 cm below sand surface), stem segments (fourth internode) and leaves (middle portion) were collected from 28-day-old maize plants. Transverse sections of the samples of 15 ?m thickness were done using a rotary microtome (OSK-9771, Japan). The sections were stained in safranin and fast-green, and having photographed (Nikon UFY-11A, Japan). For stomatal study, epidermal peels were taken from the upper surface of the leaves collected from fifth node of 28-day-old maize plants.

Source of Information: Bangladesh J. Bot. 39(1): 57-60, 2010 (June)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The phosphorus deficiency resulted in decrease in vascular area as well as decrease in size and number of stomata which may lead to decrease in growth and other morphological characters as well as yield of the maize plants.

Knowledge Management: Journal