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Genetic Architecture of Yield in Bottle Gourd (lagenaria Siceraria Monila)

A. K. M. Quamruzzaman
Horticultural Research Centre, BARI, Gazipur

S. Ahmad
Horticultural Research Centre, BARI, Gazipur

M. Moniruzzaman
Agricultural Research Station, BARI, Rangamati.

M. A. Z. Chowdhury
Crop Division, BARC, Framgate.

Abstract/ Executive Summary:

The genetic architecture of yield was studied in a five parent half diallel cross of bottle ground. The values of mean square for general combining ability (GCA) and specific combining ability (SCA) were higher significant which suggested the presence of both additive and non-additive genetic variance in the population. But the higher magnitude of GCA compared to SCA indicated variance predominance of additive genetic variance. In most of the cases, the cross between poor and poor parents showed positive SCA effect for fruits yield, which indicated the yielding. The estimates of mid parent heterosis ranged from – 19.0 to 31.8 per cent and the better parent heterosis ranged from -28.4 to 20.5 percent. Analysis for genetic components of variations suggested that additive components were more important in the inheritance of fruit yield. This character was controlled by two to three pairs of genes or groups of genes. Narrow sense heritability was 55 per cent indicating probability of selection in segregating generations. The graphical analysis also indicated wide genetic diversity among the parents.

Keywords: Genetic architecture, Bottle gourd, Vegetables

Location: Olericultural Division, Horticultural Research Centre, BARI, Gazipur.

Start Date: 00-00-2005

End Date: 00-00-2006

Program Area: Variety and Species

Commodity: Bottle gourd

Objectives:

To investigate the genetic architecture of yield in bottle ground.

Methodology:

The experiment was conducted at the Experiment field of Olericultural Division, Horticultural Research Centre, BARI, Gazipur during the winter season of 2005-06. The seeds of ten F₁ crosses (P₁ x P₂, P₁ x P₃ , P₁ x P₄, P₁x P₅, P₂ x P₃, P₂ x P₃, P₂ x P₄ , P₂ x P₅, P₃ x P₄, P₃ x P₄, P₃ x P₅, P₄ x P₅) of bottle ground in a diallel set involving 5 parents ( P₁ = BGN 1-4, P₂ = BGN2-1, P₃= BGN2-3, P₄ = BGN2-5, P₅ = BGN3-5) were sown in the polybag in 15^th Sep 2005 and twenty days old seedling were transplanting in the main field on 05 Oct 2005. The experiment was laid out in RCB design with 3 replications. The plot size was 10.0 m x 2.5 m maintaining 2.0 x 2.5 m spacing. The land was fertilized with cow dung , TSP, MP, gypsum, boric acid, zinc @ 20000, 175, 150, 100, 12, 12 kg/ha respectively. The total amount of cow dung, TSP, MP, gypsum, boric acid, zinc and 1/3^rd MP were applied during final land preparation and in the pit. The rest of MP and entire amount of urea were applied in four equal installments at 20, 40, 60, 80 days after transplanting. The intercultural operations were done as when necessary. Data on yield was recorded from three randomly selected plants per entry per replication. In the analysis of variance the F test was used at the 5% and 1% level of probability. The trait means were compared by the Tukey test at the 5% level of probability.

Source of Information: Bangladesh Journal of Agricultural, vol 35 (2), 2010, 101-107, ISSN 0253-5408,

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It is observed from the graphical analysis and the component of variance analysis that partial dominance effect was involved for this character. Therefore, it is concluded that heterosis breeding would be prospective for bottle gourd to bring out the desired improvement for desire character.

Knowledge Management: Journal