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Evaluation of Conventional Cultivars and Hybrid Rice Varieties by Their Morpho-physiological Performance During Aman Season

Ariful Islam
Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

Nasima Akhter
Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

Md. Saidur Rahman*
Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

Md. Mofizur Rahman*
Department of Horticulture, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh.

Abstract/ Executive Summary:

Aims: The objectives of the research work were to evaluate the morpho-physiological characteristics of selected local and high yielding varieties (HYV) of rice.Study Design: The research used randomized complete block design (RCBD) with four replications. Place and Duration of Study: Central research field of Sher-e-Bangla Agricultural University, Dhaka-1207 during June to December 2017. Methodology: In this research we used seven conventional rice cultivars (Kanchancni, Chinisagar, Sunashail, Ranjay, Lohadang, Haldijan, Kohabinni) and three high yielding rice varieties (BR11, BRRI dhan46 and BRRI dhan51) where different morpho-physiological data were taken for evaluation their performance. Obtaining data were analyzed by using analysis of variance technique and subsequently, least significance difference (LSD at 5%) for comparing the treatment means by MSTAT-C software. Results: Themorpho-physiological characters showed the considerable variation during the experimentation. Among the different growth parameter, the highest plant height and flag leaf area was found from Lohadang, number of leaves hill^-¹ and number of tillers hill-1from Ranjay, crop growth rate and absolute grain growth rate from Sunashail, flag leaf dry weight from Kanchancni and SPAD value of flag leaf and specific leaf weight from BRRI dhan51. Meanwhile, the minimum days to anthesis, days from anthesis to maturity and life duration from germination to maturity were recorded from BRRI dhan46 and Kanchancni, respectively. Conclusions: The results showed that among the conventional rice cultivars Kanchancni and the HYV varieties, BRRI dhan46 exhibit better morpho-physiological performance than others.

Keywords: Conventional rice cultivars; Hybrid rice; Crop growth rate; Absolute grain growth rate; SPAD value; Specific leaf weight.

Location: Sher-e-Bangla Agricultural University, Dhaka

Start Date: 00-07-2017

End Date: 00-12-2017

Program Area: Socio-economic and Policy

Commodity: Rice

Objectives:

The present study was undertaken to evaluate the morpho-physiological characteristics of selected local and HYV of rice.

Methodology:

Experimental Site The study was conducted in the experimental field at Sher-e-BanglaAgricultural University, Dhaka-1207 during the period from July to December 2017. 2.2 Climate and Soil The experimental area was sub-tropical, high temperature, high humidity and heavy rainfall in kharif season (April-September) and less rainfall in Rabi season (October-March). The soil was Silty Clay in texture. Soil pH was 6.2 and had organic carbon 0.43%. 2.3 Experimental Treatment and Design Rice was used as the test crop in this experiment. The experiment comprised a single factor where seven conventional rice cultivars i.e. Kanchancni, Chinisagar, Sunashail, Ranjay, Lohadang, Haldijan and Kohabinni and three high yielding rice varieties i.e. BRRI dhan46, BR11 and BRRI dhan51 were used. The experiment was laid out in a Randomized Complete Block Design (RCBD) with four replications (block). There were 10 plots of 6m2(3 m × 2 m) in size in each of 4 replications resulting in 40 plots in total. The distance maintained between the two-unit plots was 0.5 m and between the blocks was 1 m. 2.4 Crop Husbandry The 22 days aged seedlings were transplanted in the main field on August 5, 2017 with the plant to plant distance of 15 cm and row to row distance of 20 cm. The fertilizers cowdung, urea, Triple super phosphate (TSP), Murate of potash (MoP), gypsum,zinc sulphate and borax were applied @10 tha^-1, 150 kg, 100 kg, 100 kg, 10 kg, 60 kg and 10kg, respectively. The entire fertilizers without urea were applied during the final land preparation. Urea was applied in three equal installments at the seedling establishment, tillering and before panicle initiation. Intercultural operations and plant protection measures were followed when necessary. 2.5 Data Collection Ten hills per plot were used and data were collected from them. Data on the following parameters were recorded during the course of the experiment such as: Plant height (cm), Number of leaves hill^-1, Number of total tillers plant^-1, Crop growth rate (g cm^-2 day^-1), Absolute grain growth rate (mg plant^-1day^-1), SPAD value of flag leaf during anthesis and grain filling stage, Flag leaf area (cm²), Flag leaf dry weight (g), Specific leaf weight (mg cm^-2), Days to first anthesis, Duration from anthesis to maturity and Duration from germination to maturity. 2.6 Statistical Analysis All the collected data were tabulated and analyzed statistically using analysis of variance technique and subsequently, Least Significance Difference (LSD at 5%) for comparing the treatment means by MSTAT-C software.

Source of Information: Annual Research & Review in Biology34(6): 1-8, 2019;

Article Link (Online Journal): Article no.ARRB.55141ISSN: 2347-565X, NLM ID: 101632869

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results showed that among the conventional rice cultivars Kanchancni and the HYV varieties, BRRI dhan46 exhibit better morpho-physiological performance than others.

Knowledge Management: Journal