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Genetic Variability and Association of Curd Weight and Other Morphological Attributes in Cauliflower

S. R. Saha
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur

S. S. Choudhury
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur

S. Ahmad
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur

Abstract/ Executive Summary:

Variability and interrelationships among nine morphological traits were studied in ten diverse genotypes of cauliflower. High genotypic coefficients of variation were obtained from whole plant weight, curd weight, plant height and length of the biggest leaf. Simple correlation studies indicated that length of the biggest leaf, curd diameter and whole plant weight were the most important characters for curd yield per plant. But partial and multiple correlation studies revealed that length of the biggest leaf, whole plant weight and curd weight per plant contributed more to yield improvement in cauliflower.

Keywords: Variability, Association, Morphology, Yield, Cauliflower

Location: Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Hathazari, Chittagong

Start Date: 17-09-1990

End Date: 00-00-1991

Program Area: Variety and Species

Commodity: Cauliflower

Objectives:

To asses the amount of genetic variability of various component characters and their contribution to curd yield in cauliflower.

Methodology:

The experiment was conducted at the Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Hathazari, Chittagong during rabi season of 1990-91. Ten diverse cauliflower genotypes of local and exotic origin were grown in a randomized complete block design with three replications. Seeds were sown on 17 September 1990 in the seed bed, and 35 day old seedlings were transplanted in the main field on 23 October 1990 providing 60 × 60cm spacing. The unit plot size was 3.60 × 3.60m. The crop was fertilized at the rate of 110kg N, 85kg TSP, 132kgMP and 15 tons cowdung per hectare. The entire quantity of cowdung and TSP and half of urea and MP were applied during final land preparation. The remaining doses of urea and MP were applied in three equal installments as top dressing. Irrigation along with other intercultural operations were done as scheduled or necessary. Days required for curd initiation was recorded by visual observation of each plant everyday. Data on curd weight, plant height, number of leaves per plant, length of the biggest leaf, width of the biggest leaf, curd length, curd diameter and whole plant weight were taken from ten randomly selected plants from each plot. Genotypic and phenotypic coefficients of variation (GCV and PCV) were worked out in accordance with the formula. Heritability (H%) in board sense and genetic advance in percentage of mean (GA%) were calculated using the formula. Simple, partial and multiple correlation coefficients were estimated.

Source of Information: Bangladesh Hort.,26(1&2):13-15,1998; ISSN:0379-4288.

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Simple correlation studies indicated that length of the biggest leaf, curd diameter and whole plant weight were the most important characters for curd yield per plant. But partial and multiple correlation studies revealed that length of the biggest leaf, whole plant weight and curd weight per plant contributed more to yield improvement in cauliflower.

Knowledge Management: Journal