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Genotype X Environment (predictable) Interaction in Cotton

M.M.A. Ali
Scientific officer
Cotton Research, Training and Seed Multiplication Farm. Jessor.

A.K. Azad
Department of. Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University, Dinajpur.

B.K. Biswas
Department of. Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University, Dinajpur.

M.R. Amin
Professor
Dept. of Agricultural and Industrial Engineering. HSTU. Dinajpur, Bangladesh

K. Akhtar
Department of. Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University, Dinajpur.

Abstract/ Executive Summary:

Genetically diverse ten genotypes were tested under three different spacing which were S1 (90 cm x 45 cm), S2 (90 cm x 50 cm) and S3 (90 cm x 60 cm) at Cotton Research, Training and Seed Multiplication Farm, Sadarpur, Dinajpur during the growing season, 2006-2007. Analysis of variance revealed significant effect of the spacing over the characters studied. Phenotypic index, regression coefficient and deviation from regression coefficient were the fundamental clues of G x E interaction. After furnishing the results, the genotype D-1 found to be the suitable and the spacing 90 cm x 60 cm was the most favorable for the characters and the seed cotton yield along with yield of lint was high in D-1(2.19 kg/plot) over three spacing.

Keywords: Spacing, Genotype, Interaction, Cotton

Location: Cotton Research, Training & Seed Multiplication Farm, Sadarpur, Dinajpur

Start Date: 00-00-2006

End Date: 00-00-2007

Program Area: Variety and Species

Commodity: Cotton

Objectives:

To study the genotype - environment interaction in cotton using different morpho - agronomic characters.

Methodology:

The study was carried out at the cotton Research, Training & Seed Multiplication Farm, Sadarpur, Dinajpur during the growing season of 2006-07. Ten cotton genotypes taken from the Gene Bank of Cotton Research station, Mahigonj, Rangpur are used in the present study. The experimental design for the present study was a randomized complete block with three replications. Each experimental plot consists of two rows of 4.5 meter, 5.0 meter and 6.0 meter in length respectively. The row to row distance was 90 cm plant to plant distance were 45 cm, 50 cm and 60 cm respectively. Green manure and decomposed organic matter are used @ of 6.0 ton/hectare before final land preparation. The chemical fertilizers such as Urea, T.S.P, MOP, Gypsum, Borax and Zinc sulphate were applied in the rows at the rate of 50-175-100-100-10-10 and 10 kg/ha, respectively as basal doze. The rest 150 kg Urea was applied in three equal splits (i. e. 50 kg/ split) at 25,42 and 55 days after planting as side dressing, 3-5 cm away from the plant and the furrows of the fertilizer are hilled up immediately. At the time of third side dressing of Urea, 75 kg of MOP (rest) was also used. Other intercultural operations such as weeding, mulching, irrigation and drainage were performed timely as per need. After 50 days of sowing, first spray of chloropyriphose was done against sucking pest such as jassid and aphids. Other seven sprays were done timely. To control chewing pest (i.e. boll worm) pyrethroid was used 6 (six) times. In all cases scouting base pesticide application was followed. Hand pickings, light trap and Zollaghier trap were also used to control insects and to sustain friendly agro-ecosysterns. Fungicides (Bavistin, Endophil etc) were also used for seedling disease and boll-rot. Irrigation was done one time at moisture stress condition. The crops ware harvested in the month of December, January and February dated on 16, 24 and 22 . respectively. Ten plants were selected randomly from each plot to record data on yield and yield contributing characters. All data were subjected to statistical analysis. Analysis of variance was done for all the characters.

Source of Information: J. Sci. Technol. (Dinajpur) Vol. 7: 33-40 (2009), ISSN 1994-0386

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Analysis of variance revealed significant effect of the spacing over the characters studied. Phenotypic index, regression coefficient and deviation from regression coefficient were the fundamental clues of G x E interaction. After furnishing the results, the genotype D-1 found to be the suitable and the spacing 90 cm x 60 cm was the most favorable for the characters and the seed cotton yield along with yield of lint was high in D-1(2.19 kg/plot) over three spacing.

Knowledge Management: Journal