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Qualitative Agro-morphological Character Diversity of Similar or Duplicate Named Rice (oryza Sativa L.) Germplasm of Bangladesh

Mir Sharf Uddin Ahmed
Bangladesh Rice Research Institute, Gazipur, Bangladesh

Mohammed Khalequzzaman
GRSD, Bangladesh Rice Research Institute, Gazipur, Bangladesh

Md. Khairul Bashar
Harvest-Plus, CIAT, Banani, Dhaka, Bangladesh

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

Abstract/ Executive Summary:

Twenty-one similar or duplicate named Kartiksail rice of Bangladesh were studied for 21 qualitative agromorphological characters at BRRI during T. Aman 2009-11 seasons. Only the presence and shape of ligule showed no variation. The genotypes showed strong surface pubescence on penultimate leaf blade (57%), erect type flag leaf (81%) and lateral tiller (71%), no anthocyanin color in nodes (86%) straw color of apiculus (76%) and awnless (81%) grain and late and slow type leaf senescence (71%), respectively. Again, four types of leaf blade (pale green, green, purple tip and purple margin), five types of lemma and palea (yellowish to straw, gold and or gold furrows on straw, brown spots/furrows on straw, brown and light purple on straw) and four types of apiculus (straw, gold, brown and purple) were observed among the germplasm. The studied germplasm also showed features for developing varieties with unique identification like KS₁₄ had purple (medium) color in basal leaf sheath, KS₅ had purple tip and KS₁₄ had purple margin leaf blade, KS₅ and KS₆ had purple stigma and apiculus, KS₅ had brown (tawny) lemma and palea. Besides, many germplasm had strong hairs on leaf blade surface for developing tolerant varieties against leaf surface infestations. Besides, the genotypes including BR4 and BR23 were grouped into two clusters by the UPGMA clustering method, where cluster II had the maximum genotypes (20). It revealed that accession no 438 and 539 were duplicated. Finally, the Kartiksail land races though having similar or duplicate names showed unique variability for safe conservation.

Keywords: Qualitative characters, Rice landraces, Bangladesh

Location: BRRI, Gazipur

Start Date: 00-00-2009

End Date: 00-00-2011

Program Area: Variety and Species

Commodity: Rice

Objectives:

The present experiment was undertaken to study the qualitative agro-morphological characters of 21 similar or duplicate named Kartiksail rice land races of Bangladesh.

Methodology:

Plant materials - A total of 21 similar or duplicate named Kartiksail rice accessions of Bangladesh along with two popular BRRI varieties viz. BR4 and BR23 were used in the experiment. Crop cultivation - Thirty days old single seedling was transplanted using spacing within and between rows of 20 and 25 cm, respectively in unit plot of 4 rows each 2.7 m long for each accession during T. Aman 2009 and T. Aman 2011 seasons at BRRI Gazipur. The chemical fertilizers were applied at the rate of 60-50-40-10 kg NPKS per hectare. Method of data collection - Twenty one qualitative agro-morphological characters were studied and recorded using “Procedure of DUS tests for inbreed and hybrid Rice” (as approved by National Seed Broad, Ministry of Agriculture in Bangladesh) and “UPOV Rice Test Guidelines” (sources: TG/16/8; project 3). Data analysis - The qualitative data were transformed to binary form. The presence and absence of the different variants scored as 1 and 0, respectively were calculated by computer using Power Marker version 3.25 software. The qualitative binary data were subjected to cluster analysis using the computer package NTSYS-pc version 2.1. A similarity matrix was calculated with the Simqual subprogram using the Dice coefficient, followed by cluster analysis with the SAHN subprogram using the un-weighted pair group method on arithmetic mean (UPGMA) clustering method as implemented in Numerical Taxonomy and Multivariate Analysis System (NTSYS-pc) for portrait the genotypes graphically. The similarity matrix was also used for principal coordinate analysis (PCoA) with the DCenter in NTSYS-pc.

Source of Information: Journal of Biodiversity and Environmental Sciences (JBES); ISSN: 2220-6663 (Print) 2222-3045 (Online); Vol. 7, No. 4, p. 51-61, 2015

Article Link (Online Journal): http://www.innspub.net

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Finally, it is concluded that the Kartiksail land races though having similar or duplicate names showed exclusive variability and unique features for the studied qualitative characters which can be selected for developing varieties with unique identification, better quality and broaden genetic bases. Besides, many germplasm had strong hairs on the surface of the leaf blade, which can be utilized for developing tolerant varieties for leaf surface related insects and diseases. Besides, characterizations of the identified genotypes need to be done using SSR markers for QTL mapping and validating candidate valuable genes.

Knowledge Management: Journal