Genetic variations in yield and yield contributing traits of green amaranth
The experiment was carried out at the experimental farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur during 2015 using twenty promising genotypes (AA21 to AA40) of green amaranth in Randomized Complete Block Design (RCBD) with three replications to s...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Serbian Genetics Society
2020-01-01
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| Series: | Genetika |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0534-0012/2020/0534-00122001393R.pdf |
| Summary: | The experiment was carried out at the experimental farm of Bangabandhu Sheikh
Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur during 2015
using twenty promising genotypes (AA21 to AA40) of green amaranth in
Randomized Complete Block Design (RCBD) with three replications to study the
variability, genetic parameters, association of yield related morphological
traits to foliage yield and to find out the direct and indirect effects of
components characters towards foliage yield. The significant analysis of
variance revealed wide range of variability among the twenty genotypes of
green amaranth. Except for stem diameter, foliage yield and all the yield
contributing morphological traits had high heritability including high
genetic advance in percent of mean, high to moderate genotypic and
phenotypic variances and coefficient of variations with minimum differences
of PCV and GCA indicated that the traits were governed by additive gene
actions and had a great scope of selection for the improvement of green
amaranth. Correlation study revealed that total biomass and shoot weight
showed significant association with foliage yield per m2. Hence, selection
based on total biomass and shoot weight could remarkably improve the foliage
yield of green amaranth. However, the path coefficient analysis revealed
that shoot weight had the highest positive direct effect (1.19) with
significant genotypic correlation on foliage yield. It indicated that direct
selection based on shoot weight would be effective for the improvement of
foliage yield of green amaranth. Mean performance study revealed that the
genotypes, such as AA21, AA22, AA24, AA25, AA27, AA28, AA31, AA36 and AA39
had high foliage yields including most of the yield related morphological
traits over the grand mean. These genotype could be selected as high
yielding varieties or parental lines for future breeding program. |
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| ISSN: | 0534-0012 1820-6069 |