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Qualitative Agro-morphological Character Diversity of Similar or Duplicate Named Rice (oryza Satival.) 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
Departmentof Genetics and Plant Breeding, BAU, Mymensingh, Bangladesh

Abstract/ Executive Summary:

Twenty-one similar or duplicate named Kartiksailrice of Bangladesh were studied for 21 qualitative agro-morphological characters at BRRI during T. Aman 2009-11 seasons. Only the presence and shape of the 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 a purple tip and KS14 had purple margin leaf blade, KS5 and KS6 had a 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 Kartiksailland races though having similar or duplicate names showed unique variability for safe conservation.

Keywords: Qualitative characters, Rice landraces, Bangladesh

Location:

Start Date:

End Date:

Program Area: Conservation and Biodiversity

Commodity: Rice

Objectives:

The present experiment was, therefore, 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 Kartiksailrice accessions of Bangladesh along with two popular BRRI varieties viz.BR4 and BR23 were used in the experiment. Crop cultivationThirty 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, 2001) and “UPOV Rice Test Guidelines” (sources: TG/16/8; project 3). Data analysis The qualitative data were transformed to binary form as described by Sneath and Sokal (1973). 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 (Liu and Muse, 2005). The qualitative binary data were subjected to cluster analysis using the computer package NTSYS-pc version 2.1 (Rohlf, 2002). A similarity matrix was calculated with the Simqual subprogram using the Dice coefficient, followed by cluster analysis with the SAHN subprogram using the unweighted pair group method on the arithmetic mean (UPGMA) clustering method as implemented in Numerical Taxonomy and Multivariate Analysis System(NTSYS-pc) for a 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 http://www.innspub.net

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Finally, it can be said that the Kartiksailland 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 a 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