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Combining Ability for Yield and Yield Contributing Characters of White Jute (corchorus Capsularis L.)

RAHIMA KHATUN
Bangladesh Jute Research Institute, Dhaka-1207, Bangladesh

R. H. SARKER
Department of Botany, University of Dhaka. Dhaka-1000. Bangladesh

M. A. SOBHAN
Bangladesh Jute Research Institute, Dhaka-1207, Bangladesh

Abstract/ Executive Summary:

Crosses were made between three varieties and seven accessions of white jute (Corchorus capsularis L.) in all possible combinations to establish 10 × 10 full diallel set. Variances for general combining ability (GCA) and specific combining ability (SCA) were significant or highly significant for all the characters indicating additive and non-additive gene actions played predominant role for expression of these characters. The magnitudes of GCA variance were higher than the corresponding SCA variance confirmed the predominance of additive genetic variations for these traits. The variety CVL-1 and Acc. 1831 were good general combiners for plant height, technical height, base diameter, number of nodes, bark weight, fibre weight and stick weight. Crosses, var. CVL-1 × Acc. 1831, Accs. 3695 × 4087, Accs. 1831 × 1833, Accs.1831 × var.CC-45, Acc. 2146 × var. A-38 and Acc. 2146 × var.CC-45 revealed significant positive SCA effect for fibre weight. Significant reciprocal SCA effect was observed in crosses, Accs.1832 × 3695, Accs.1833 × 1831 and Acc. 4087 × var.CVL-1. Crosses, var. CVL-1 × Acc.1831, Accs. 3695 × 4087, Acc.1831 × var.CC-45, Acc.2146 × var.CC-45 and a reciprocal cross, Accs.1833 × 1831 were found to be good specific combiners for bark weight, fibre weight and stick weight.

Keywords: Combining ability, Fibre yield, White jute

Location: Central station of Bangladesh Jute Research Institute

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Jute

Objectives:

To obtain information on the nature of combining ability in white jute (Corchorus capsularis L.).

Methodology:

The materials consisted of seven Accessions viz. 3695, 1515, 1831 1832, 1833, 2146 and 4087 as well as three improved varieties, viz. CVL-1, A-38 and CC-45. All the parents were crossed in all possible combinations including reciprocals. Ten parents and their crosses (45 F1s and 45 reciprocals) were grown in a randomized complete block design with three replications at the field of central station of Bangladesh Jute Research Institute in 2001. Seeds of each parent and F1s were sown in one row of 3 m long. Space between rows was 30 cm and that between plants was 6 - 7 cm. From each replication 10 plants were selected at random and harvested 120 days after sowing. Standard intercultural practices were followed to raise a healthy and disease free crop. Data on plant height, technical height, base diameter, number of nodes, number of branches, bark weight, fibre weight, stick weight, number of fruits, number of seeds per fruit, seed weight and 1000 seed weight on per plant basis were recorded. The combining ability analysis was done following Method-1, Model-1 of Griffing (1956).

Source of Information: Bangladesh J. Bot. 39(1): 79-85, 2010 (June)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The magnitudes of GCA variance were higher than the corresponding SCA variance confirmed the predominance of additive genetic variations for these traits. The variety CVL-1 and Acc. 1831 were good general combiners for plant height, base diameter, number of nodes, bark weight, fibre weight and stick weight. Crosses, var. CVL-1 × Acc. 1831, Accs. 3695 × 4087, Accs. 1831 × 1833, Accs.1831 × var.CC-45, Acc. 2146 × var. A-38 and Acc. 2146 × var.CC-45 revealed significant positive SCA effect for fibre weight. Significant reciprocal SCA effect was observed in crosses, Accs.1832 × 3695, Accs.1833 × 1831 and Acc. 4087 × var.CVL-1. Crosses, var. CVL-1 × Acc.1831, Accs. 3695 × 4087, Acc.1831 × var.CC-45, Acc.2146 × var.CC-45 and a reciprocal cross, Accs.1833 × 1831 were found to be good specific combiners for bark weight, fibre weight and stick weight.

Knowledge Management: Journal