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A Study of Leaf Growth in Two Cultivated Species of Jute (corchorus Capsularis and C. Olitorius)

D. K. Saha
Department of Botany. University of Rajshahi, Rajshahi. Bangladesh,

N. K. Paul
Department of Botany. University of Rajshahi, Rajshahi. Bangladesh,

Abstract/ Executive Summary:

This investigation was undertaken to study the leaf growth of two cultivated species of jute (Corchorus capsularis and C. olitorius). The rate of leaf appearance was faster in C. cepsuleris (0.66 leaves/day) than that of C. olitorius (0.59 leaves/day). C. olitarius had longer duration of leaf extension as well as higher rate of leaf extension than that of C. capsularis. At the early stages of growth, the lengths and breadths of the fourth to the sixth leaf and that of total leaf area of C. olitorius were lower and at the later stages these values were significantly higher than that of C. capsularis. The formation of larger leaf was accompanied by a slower rate of leaf appearance and longer duration of leaf extension as well as higher rate of leaf extension.

Keywords: Jute, Leaf growth, Corchorus capsularis

Location: Department of Botany, Rajshahi University

Start Date: 01-06-1981

End Date:

Program Area: Variety and Species

Commodity: Jute

Objectives:

To study the leaf growth of two cultivated species of jute (Corchorus capsularis and C. olitorius).

Methodology:

The experiment was carried out in the Department of Botany, Rajshahi University. Seeds of C. cepsularis, cv. D154 and C. olitorius cv. C. G. were sown in earthen pots on June 1, 1981. The pots were arranged in randomized block design with three replications. Necessary cultural practices were maintained during the growing period. Initiation dates of the first leaf to the 20^th leaf were recorded. Length and breadth of the first to the sixth leaf were measured on alternate days until maturity, when the growth was checked. For determination of total leaf area/plant, twelve plants were harvested for each species at each growth stage. Ten harvests were taken at equal intervals of 4 days, and the first harvest was taken at 26 days after sowing. Leaf area was determined using the disk method and the areas of cork borers used were 0.6358 and 1.3266 cm, for the first and the remaining harvests, respectively. Twenty disks were used in calculating the area. In this study, leaves refer only to the leaf-blades in calculating leaf area by using the area-weight relationship. Leaves and disks were weighed after oven-drying at 90⁰C for 24 h till they reached constant weight and the leaf area was calculated by the following formula: ( Area of disks X Weight of leaves / Weight of disks). Analysis of variance was performed and least significant differences (LSD) values were calculated.

Source of Information: Bangladesh Journal of Agriculture. Vol: 9 (No-4), pp: 9-14, 1984

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The present study indicated that in jute the formation of larger leaf was accompanied by slower rate of leaf appearance and longer duration of leaf extension as well as higher rate of leaf extension.

Knowledge Management: Journal