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Relationship of Biological Yield and Harvest Index with Grain Yield in Triticale, Durum and Bread Wheat

A. K. M. Shamsuddin
Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

Biological yield end harvest index were positively correlated with grain yield in durum and bread wheat. In triticale. their correlations with grain yield were positive but not Significant. Path analysis indicated that biological yield and harvest index were correlated with grain yield mainly through their direct effects in durum and bread wheat. In triticale. the direct effects of these two characters on grain yield were also high and positive. But considerable amount of negative indirect effects of biological yield via harvest Index and vies-versa minimized the correlation between biological yield and between harvest index and grain yield.

Keywords: Biological Yield, Harvest index, Wheat

Location: Bangladesh Agricultural University farm

Start Date: 01-11-1982

End Date: 15-03-1983

Program Area: Socio-economic and Policy

Non-commodity: Analysis and interpretations

Objectives:

The nature of relationship between biological yield, harvest index and grain yield had been examined in triticale, durum wheat and bread wheat.

Methodology:

This study included three separate experiments on triticale, durum and bread wheat. The experiments were conducted at the Bangladesh Agricultural University farm during the winter of 1982- 83. The experiments of triticale and durum wheat contained 20 genotypes in each, while the experiment of bread wheat contained 65 genotypes. In triticale and durum wheat experiments, the seeds were sown in randomized block design with three replications. In case of bread wheat experiment, the seeds of the varieties were sown following an augmented design. In all experiments the plot size was 3m x 1.05m containing 7 rows 15cm from each other. The plant population in the rows was continuous. The seeds of all the experiments were sown in the middle of November, 1982 and the crops were harvested by the middle of March, 1983. The data on biological yield, harvest index and grain yield were collected from 30 randomly selected plants from each variety. The data were aver aged over variety and analysed for correlation and then path coefficient following Dewey and Lu (1959).

Source of Information: Bangladesh J. Crop Sci. 1990, 1 (1) : 31-35

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results of the present study suggest that emphasis should be given on biological yield and harvest index for yield improvement in wheat and triticale breeding programme.

Knowledge Management: Journal