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Effect of Brassinosteroids (tnz-303), Chloro Indole Acetic Acid (cl-iaa) and Gaba on Growth Attributes of Lentil

M. F. Dakua
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh

M. O. Islam
Department of Crop Botany, Bangladesh Agricultural University, Mymensingh

Y. Kamuro
BAL Planning Co. Ltd., 2-15-16, Hanaike, Ichinomiya, Aichi 491, Japan

Abstract/ Executive Summary:

An experiment was carried out in the field of the Crop Botany Department, Bangladesh Agricultural University, Mymensingh to study the effect of Cl- IAA, TNZ303 and GABA on growth and physiological characters of lentil (Lens esculena Moench.) varieties Bari masur 3 (BM-3) and Bari masur 4 (BM-4). Growth performance of variety BM-3 was better than that of BM-4. Results revealed that all the plant growth regulators at selective concentration stimulated growth and some physiological attributes in both varieties. The effect of GABA was the best over other two plant growth regulators (PGRs). The total dry matter, leaf area index, crop growth rate and net assimilation rate were significantly enhanced by GABA at 0.664 ml L^-1 and followed by 0.332 ml L^-1 of same PGR and 0.166 ml L^-1 of TNZ-303. Few growth attributes were also stimulated by Cl-IAA at 0.332 ml I^-1.

Keywords: Plant growth regulators, Physiological attributes, Lentil, Growth

Location: Bangladesh Agricultural University, Mymensingh

Start Date: 00-00-0000

End Date: 00-00-0000

Program Area: Crop-Soil-Water Management

Commodity: Lentil

Objectives:

To study the effect of TNZ303 (Brassinosteroid), GABA and Cl-IAA on growth attributes of lentil in Mymensingh of Bangladesh.

Methodology:

The experiment was conducted in the field of Bangladesh Agricultural University, Mymensingh, located at 24°75' N latitude and 90°50' E longitude at the elevation of 18 m above the sea level. The BARI masur-3 (BM-3) and BARI masur-4 (BM-4) were used in the present experiment. The basal dose of fertilizers was 45 kg urea, 85 kg TSP, 35 kg MP and 6 tons cowdung per hectare which incorporated thoroughly at the time of final land preparation before seed sowing. Effects of three PGRs namely Cl-IAA, TNZ-303 and GABA applied each at 0. 0 ml L^-1 (control), 0.166 ml L^-1 , 0.332 ml L^-1, and 0.664 ml L^-1 of tap water were investigated. The three-factor experiment was laid out in Randomized Complete Block Design (RCBD) where each treatment was replicated five times. The size of a plot was 4 m x 2 m and spacing among the plots was 0.5 m. The seeds were soaked in solutions of PGRs of various concentration for 12 hours separately and sown in broadcast method. Two weeding and thinning were done at 15 and 45 days after sowing (DAS), respectively with the help of a spade. Growth parameters were determined from 15 DAS to 105 DAS with 15 days interval. At each harvest, ten plants were selected aside of each plot and uprooted carefully by a khupri in order to ensure maximum roots and carried to the laboratory in labeled polythene bags to prevent desiccation or transpiration losses. The plants were dried separately at 80°C for 72 hours for dry weight estimation. Growth attributes like leaf areas index (LAI), crop growth rate (CGR), net assimilation rate (NAR), total dry matter (TOM) etc. were estimated.

Source of Information: Progress. Agric. 15(1) : 295-301, 2004, ISSN 1017-8139

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In the present experiment, results indicate that GABA, a mixed formulation, stimulated growth- contributing characters in lentil and ultimately enhanced them. Several aspects might be speculated for higher growth. Application of PGR prior to germination might stimulate endogenous PGRs activity and enhanced germination process over the control. Rapid germination provided long duration for growth process and or endogenous stimulation, which activated physiological process for higher growth and yield. These factors or other factor(s) unknown might enhanced flowering and fruit setting in plants.

Knowledge Management: Journal