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Study of Qualitative Agro-morphological Characters of Dhaliboro Rice (oryza Sativa L.) Germplasm of Bangladesh

MS Ahmed
Genetic Resources and Seed Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

S Parveen
Training Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

MHK Baktiar
Genetic Resources and Seed Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

MA Siddique
Genetic Resources and Seed Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

Ten similar or duplicate named Dhaliboro rice germplasm of Bangladesh were studied for twenty-one qualitative agro-morphological characters at BRRI during 2009-11. Only the presence and shape of penultimate leaf ligule characters showed no variations. The majority of the genotypes showed no anthocyanin color in leaf sheath (70%), weak, medium and strong intensity of anthocyanin color in basal leaf sheath (each 10%), green leaf blade color (90%), weak surface pubescence of penultimate leaf blade (80%), no anthocyanin color in auricles and collar of penultimate leaf (90%), colorless ligule of penultimate leaf (80%), white color of stigma (90%), erect blade of flag leaf (60%), erect curvature of lateral tiller (100%), no anthocyanin color in nodes (100%), very weak intensity of anthocyanin color in nodes and internodes (100%), yellowish to straw anthocyanin color of lemma and palea (100%), strong intensity of anthocyanin color in lemma and palea (100%), purple apex color of apiculus (70%), awnless (70%), distribution of awns at tip only (20%), yellowish white to straw and brown color awns (each 50%) and late and slow type of leaf senescence (100%), respectively. The dendrogram based on UPGMA clustering method, distributed the Dhaliboro genotypes along with BRRI dhan28 and BRRI dhan29 into three clusters for the nineteen qualitative agro-morphological traits. Cluster III was the major one with maximum genotypes (9), while cluster I consisted with BRRI dhan28 and BRRI dhan29 and cluster II consisted with only DB5, respectively. It was revealed from the result that the genotype DB2 (acc. no. 2247) and DB6 (acc. no. 4396) were found duplicate, which indicated that they were 100% similar. The genetic distance, ranging from 0.000 to 9.646, also revealed the existence of significant differences among the duplicate named Dhaliboro rice. The highest distances (9.646) was recorded between genotype DB1 (acc. no. 2250) and DB4 (acc. no. 180). Finally, duplicate named Dhaliboro rice germplasm showed exclusive variability and unique features for utilization in future breeding programme, especially regarding issues like intellectual property rights (IPRs).

Keywords: Qualitative characters, Dhaliboro rice, Bangladesh

Location: BRRI

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 ten duplicate named Dhaliboro rice of Bangladesh.

Methodology:

Ten similar or duplicate named Dhaliboro rice germplasm of Bangladesh along with two popular BRRI varieties such as BRRI dahn28 and BRRI dhan29 were used in the experiment. 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 entry 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. Twenty one qualitative agro-morphological characters were studied and recorded using “Procedure of DUS tests for rice hybrid and its component line” (approved by National Seed Broad, Ministry of Agriculture in Bangladesh) and “UPOV Rice Test Guidelines” (sources: TG/16/8; project 3). 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 2.2. 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: Eco-friendly Agril. J. 8(08): 91-96, 2015 (August); ISSN 1999-7957

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The traditional Dhaliboro germplasm showed wide variability and unique qualitative features of rice. The identified unique characters can be utilized for developing new varieties with unique DUS characters. Because it needs to be mention that Intellectual Property Rights is a burning issue for protecting bio-piracy in the worldwide, for which precise identification and distinction of crop variety is a must. However, these processes can also broad the genetic base of modern rice. Finally, molecular characterizations of the studied rice germplasm need to be done for QTL mapping and validating candidate genes responsible for valuable characters.

Knowledge Management: Journal