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Genetic Parameters and Relationship Among Some Agronomic Characters in Sunflower (helianthus Annuus L.)

M. S. Alam
Regional Agricultural Research Station, Jamalpur, Bangladesh

M. N. Hossain
Regional Agricultural Research Station, Jamalpur, Bangladesh

A. B. M. A. Khair
Regional Agricultural Research Station, Jamalpur, Bangladesh

M S. Khan
Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

Abstract/ Executive Summary:

Variability, genetic parameters and degree of association of yield and yield components in 32 selected strains of sunflower were studied. Significant variation was observed in all the characters included except days to maturity. Genotypic coefficients of variability were low in all the characters. The seed yield/plant had the highest value of heritability associated with highest genetic advance. The genetic advance was low for days to maturity. Seed yield/plant was significantly and positively associated with capitulam diameter and number of seeds/capitulam. Capitulam diameter was positively associated with number of seeds/capitulm.

Keywords: Genetic, Sunflower, Agronomic

Location: Regional Agricultural Research Station, Jamalpur

Start Date: 00-00-1983

End Date: 00-00-1984

Program Area: Variety and Species

Commodity: Sunflower

Objectives:

To evaluate some important genetic parameters and the association among yield contributing characters.

Methodology:

Thirty one selected strains of sunflower were included in the study. DS-l was used as a check. The experiment was set in a randomized complete block design with three replications at the Regional Agricultural Research Station, Jamalpur during rabi season, 1983-84. The unit plot size was 3x 3m having rows 50 cm apart and plants were spaced 30 cm within the row. Observations on various characters eg plant height, capitulam size (diameter), No. of seeds/capitulam, 100-seed weight. seed yield/plant and days to maturity were recorded on 10 randomly selected plants from each plot. Genotypic and phenotypic coefficients of variation were estimated according to the formula. Heritability and genetic advance at 5% selection intensity were calculated using the method.

Source of Information: Bangladesh J. Agri. 1987, 12(2) : 89-93

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It may be concluded that the seed yield/plant is an important character which may be considered as a selection criterion and for yield improvement selection of big size capitulam and higher number of seeds per capitulam should be considered as these correlate with yield positively and significantly.

Knowledge Management: Journal