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Comparative Potential on Yield and Its Related Characters in Fine Rice

O. Habiba
Department of Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh

M.L. Kabir
Department of Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh

M.K. Rabby
Department of Zoology, Ulipur Government College, Kurigram, , Bangladesh

B.K. Biswas
Department of Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh

M. Hasanuzzaman
Department of Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh

Abstract/ Executive Summary:

A total of twenty fine grain rice cultivars including fifteen land races, three developed (Paijam, BR-49 and BR34) and two exotic (Philippine katari and Ranjit) varieties were collected from different parts of Bangladesh to identify the yield enhancing characters and to select desirable cultivars with high yield potential and high aroma emission from rice grain. The experiments were conducted in Aman season in 2013, in the Plant Breeding Research Field, HSTU, Dinajpur. Genetic variation for yield (t/ha) and other fourteen yield related characters like, plant height (cm), panicle length (cm), panicle weight (gm), total tillers/plant, productive tillers/plant, rachilla/panicle, sterile grain/panicle, total grain/panicle, 1000-grain weight (g), grain length (mm), grain breadth (mm), aroma content (%), days to 50% flowering, days to maturity was estimated. All the characters showed high heritability except sterile grain/panicle, indicated better progress under selection. High heritability (98.65%) was revealed by productive tillers/plant, suggested that the character would be less affected by environment. The cultivar, Ranjit produced the highest yield (4.96 t/h).The highest aroma contents in Kalozira (35%) and Kalosoru (30%) was estimated. The highest yield (4.96 t/h) was obtained from Ranjit and it was statistcally similar with the yields of Bolder (4.68 t/h), Malsira (4.25 t/h), Kalozira (4.33 t/h), BR-49 (4.26 t/h). The simultaneous consideration of yield potential and aroma emission from rice grain, four cultivars viz. Kalozira, Radhunipagol, Badshabogh and Chinigura may be advanced for commercial cultivation by the farmers and agriculture entrepreneurs and may be incorporated in further breeding for the development of high yielding fine rice varieties but the highest amount of aroma emission (35%) and yield (4.33 t/h) indicated that Kalozira was the best aromatic rice cultivar.

Keywords: Genetic variation, Heritability; Genetic diversity, Rice ( Oriza sativa L.)

Location: Plant Breeding Research Field, Department of Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University, Dinajpur

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Rice

Objectives:

The present study was undertaken to identify those characters that are important for improving the yield potential in fine rice and Comparative yield potential of the collected fine rice cultivars.

Methodology:

The experiment was conducted in the Plant Breeding Research Field, Department of Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University, Dinajpur. The experimental plots were laid out in Randomized Complete Block Design with three replications. Each replication contained 150 hills of each cultivar having 20cm×20cm spacing. The unit plot size was 3m in length and 2m in breadth. The cultivars were randomly distributed to each of the plots within a block. Fertilizer was applied at the rate of 150kg, 100 Kg, 70Kg, 60 Kg and 4000 Kg Urea, TSP, MP, Gypsum and Cowdung respectively. The cow dung was applied at the beginning of land preparation and all the fertilizers except urea were applied as basal dose at the time of final land preparation. Urea (150 kg/ha) was applied in equal three splits. The first dose of urea was applied at 21 days after transplanting (DAT), the second dose of urea was added as top dressing at 45 days (active vegetative stage) after transplanting and third dose was applied at 60 days (panicle initiation stage) after transplanting as recommended by BRRI. Data on different yield and yield contributing characters were recorded on plot and hill basis at different dates as per experimental requirement. Data were recorded on the following plant characters- Plant height (cm) ,Panicle length (cm), Panicle wt. (gm) Rachilla/panicle (no. ,Sterile grain/panicle (no.), Total grain/panicle (no.), 1000- grain weight (g), Grain length (mm), Grain breadth (mm , Productive tillers/plant (no. , Total tillers/plant , Days to 50% flowering (day), Days to maturity (day, Yield (t/h). Statistical analysis - The collected data were compiled and tabulated in form for statistical analysis. Analysis of variance was done following Randomized Complete Block Design (RCBD) with the help of a computer package (MSTAT-C) and the mean differences among the varieties were adjusted by Duncan’s Multiple Range Test.

Source of Information: International Journal of Agronomy and Agricultural Research (IJAAR); ISSN: 2223-7054 (Print) 2225-3610 (Online); Vol. 7, No. 4, p. 95-102, 2015

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

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Out of the fourteen traits the panicle weight, 1000- grain weight, effective tillers per plant, plant height, days to 50% flowering, and days to maturity are important traits for improving the yield potential in fine rice. Among the 20 fine rice cultivars seemed to be highly potential. Ranjit and Bolder were outstanding against yield/ha.

Knowledge Management: Journal