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Genetic Analysis of Some Quantitative Traits in White Jute Through Diallel Crossess.

Mahmud Al Hossain
Senior Scientific Officer
Capsularis Department, Breeding Division, Bangladesh Jute Research InstituteManikmia Avenue, Dhaka-1207

Abstract/ Executive Summary:

In order to develop high yielding salinity tolerant cultivars selected six salt tolerant genotypes(C-3473, C-2593, C-2234, C-12033, C-12221, C-3070) were crossed with the existing high yielding variety (D-154) which better perform in non saline condition in 7X7 diallel fashion and 21 cross combinations were made. In F₁ generations both additive and non additive genetic components were important in the regulation of various morphological characters. In diallel analysis, parent-7 (D-154), parent-1(C-3473), parent-4(C-12033) parent-5 (C-12221) and parent-2 (C-2593) were identified as general good combiner for high yielding salt stress tolerant cultivars. According to combining ability analysis, the cross C-12221 X D-154 was found to be best SCA performance for high yielding salt stress tolerant cultivars in ranking for all the characters. This was followed by C-12033 XD-154, C-2234 XC-3070, C-2593 X C-2234, C-3473 X C-2234, C-2593 X C-3070 and C-2593 X D-154. The cross C-3473XC-3070 was found to be very low in their performance. This was because these two are considered to be the closest genotypes. Partial dominant gene actions were involved in plant height, dry stick weight/plant and dry fibre weight/plant and over dominant gene actions were involved in base diameter, fresh weight with leaves/plant and fresh weight without leaves/plant.

Keywords: Genetic analysis, quantitative traits, white jute and diallel crossess.

Location: Green house premises, BJRI, Dhaka.

Start Date: 01-08-2012

End Date: 31-12-2012

Program Area: Variety and Species

Commodity: Jute

Objectives:

To carry out genetic analysis including combining ability, heterosis and G x E interaction for fibre yield and yield contributing characters in diallel cross of potential parents. 2.To identify desirable combiner from diallel crosses.

Methodology:

F₁ seeds were used as experimental material of 15 combinations generated from 6 x 6 diallel crosses. Six potential salinity tolerant genotypes of white jute germplasms were used 6 x 6 diallel combination. This experiment was carried out in a randomized complete block design with three replications at green houses premises of BJRI head office Dhaka.

Source of Information: Annual Report-2012, BJRI

Article Link (Online Journal):

Funding Source:

1. Government

Budget: Tk. 3000/-

Total Budget (Tk.) : Tk. 3000/-

Achievement/Findings:

In order to develop high yielding salinity tolerant cultivars selected six salt tolerant genotypes(C-3473, C-2593, C-2234, C-12033, C-12221, C-3070 ) were crossed with the existing high yielding variety(D-154) which better perform in non saline condition in 7X7 diallel fashion and 21 cross combinations were made. In F₁ generations both additive and non additive genetic components were important in the regulation of various morphological characters. In diallel analysis, parent-7 (D-154), parent-1(C-3473), parent-4(C-12033) parent-5 (C-12221) and parent-2 (C-2593) were identified as general good combiner for high yielding salt stress tolerant cultivars. According to combining ability analysis, the cross C-12221 X D-154 was found to be best SCA performance for high yielding salt stress tolerant cultivars in ranking for all the characters. This was followed by C-12033 XD-154, C-2234 XC-3070, C-2593 X C-2234, C-3473 X C-2234, C-2593 X C-3070 and C-2593 X D-154. The cross C-3473XC-3070 was found to be very low in their performance. This was because these two are considered to be the closest genotypes. Partial dominant gene actions were involved in plant height, dry stick weight/plant and dry fibre weight/plant and over dominant gene actions were involved in base diameter, fresh weight with leaves/plant and fresh weight without leaves/plant.

Knowledge Management: Report/Proceedings