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Genotype X Environment Interaction Effects on the Field Performance of Stem Amaranth (amaranthus Tricolor L.)

M. N. N. Dewan
Departmentof Genetics and Plant Breeding, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

M. E. Haq
Departmentof Genetics and Plant Breeding, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

M. M. Hasan
Adaptive Research Division, BRRI, Gazipur-1706, Bangladesh

M. S. Hossain
Departmentof Genetics and Plant Breeding, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

M. Z. Tareq*
Jute Agriculture Experimental Station, BJRI, Manikganj, Bangladesh

Abstract/ Executive Summary:

Research was carried out to find genotype x environment interaction effects on the field performance of 20 germplasm of Stem amaranth at Genetics Farm, Sher-e-Bangla Agricultural University, Dhaka during the period from November, 2013 to May 2014. The experiment was laid out in the Randomized Complete Block Design with three replications. Data were recorded on plant height (cm), no. of leaves per plant, individual leaf weight (gm), individual stem weight (gm), marketable stem weight (gm), yield (Kg/ha) at three environments. G-18 was the tallest with nonsignificant S2di value (10.5) and G-9 was the shortest (2.22). G-20 produced the most number of leaves with non-significant S2di value (2.59) and G-01 was the least (11.56**). G-01 was the highest individual leaf weight with a significant S2di value (46.08**) and G-15 was the least (2.84). G-01 was the highest individual stem weight with a non-significant S2di value (15.13) and G-09 was the least (48.09). G-01produced highest marketable stem weight with a non-significant S2di value (451.59) and G-09 was the least (39.77). G-01 was the highest yield producing with nonsignificant S2di value (7821.539) and G-09 was the least (688.8164). Based on stable responses considering the higher yield characterG-08 and G-18, for higher individual leaf weight G-07 and G-11, for higher individual stem weight G-18, for lesser dry weight of stem G-14 and G-18 genotypes could be selected for effective use in breeding program.

Keywords: Amaranthus, Environment, Genotype, Interaction, Field performances

Location: Genetics Farm, Sher-e-Bangla Agricultural University, Dhaka

Start Date: 00-11-2013

End Date: 00-05-2014

Program Area: Variety and Species

Commodity: Amaranth

Objectives:

A study was undertaken to identify the environmentally stable genotypes of amaranth for the breeding, to assess the heritability of yield contributing characters of different amaranth genotypes and to select the most promising genotypes for future breeding program.

Methodology:

The experiment was conducted at the Research Farm of the Sher-e-Bangla Agricultural University in three successive sowing dates: 05.11.2013, 15.01.2014 and 25.03.2014, respectively. Three different sowing dates were used as three separate environment and 20 amaranth genotypes collected from Bangladesh Agricultural Research Institute(BARI) were used as experimental materials. The location of the experimental site was situated at 23⁰74'N latitude and 90⁰35'E longitudes with an elevation of 8.6 meter from the sea level. The pH was 5.47 to 5.63 and organic carbon content is 0.82%. The experiment was conducted in Randomized Complete Block Design (RCBD) with three replications. The unit plot size was 1m x 1m. Land was prepared accordingly. After land preparation, the seeds were sown in line. All intercultural operations were done as and when necessary. Five plants were selected randomly from each plot for recording data at the marketable stage of the plant. Then the harvested plants were measured either by manually or by using many devices to get data. Data were recorded on plant height (cm), no. of leaves per plant, individual leaf weight (gm), individual stem weight (gm), marketable stem weight (gm), yield (Kg/ha) at three environments. During data analysis, different sowing dates are considered as separate environments. Data were subjected to analyze by the statistical approaches provided by Eberhart and Russell (1966) and Panwaret al. (1995) for the estimation of genotype-environment interaction. The individual genotypic response i.e. regression coefficient (bi) was tested by t-test using the standard error of the corresponding bi value against the hypothesis. The individual deviations from linear regression tested by F-test using pooled error.

Source of Information: Bangladesh J. Pl. Breed. Genet., 30 (1):21-31, 2017

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the above results it can be concluded that, significant genotype-environment interactions were observed for all the characters. The season I was poor and the season II & III was considered as good environment for the production of plants with higher plant height, more number of leaves, leaf weight, stem weight, marketable stem weight and finally higher yield.

Knowledge Management: Journal