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Effect of Salinity on Growth and Yield Attributes in Transplanted Aman Rice Genotypes

M. M. Rahman
Manager- PDS
Lalteer Seed limited, Khulna

S. Mandal
Scientific officer
Farm Division, Bangladesh Sugarcrop Research Institute, Ishwardi, Pabna

Md, Abdul Azim
Scientific Officer
Biotechnology Division, Bangladesh Sugarcrop Research Institute

R. C Kabiraj
Principal Scientific Ofiicer
Soil Science and Nutrition Division, Bangladesh Sugarcrop Research Institute

Abstract/ Executive Summary:

A pot experiment was conducted during July 15 to December 6, 2011 with three advanced lines of transplanting Aman rice viz. PNDB-100, PR-26305-M-2 and PNR-166 at the Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh to assess their performance on morphological parameters under different salinity levels. The salinity levels were control (0.27dSm-1), 6dSm-1 and 8dSm-1. Plant height, number of tillers, leaves and leaf area hill-1, total dry matter (TDM) hill^-1, length of panicles, 1000-grain weight and grain yield hill-1 were gradually decreased with the increase level of salinity compared to control. Among the three advanced lines, PNR-166 showed the best performance and showed tolerance to salinity, PNDB-100 was intermediate and PR-26305-M-2 showed the less tolerance to salinity.

Keywords: Rice, salinity, Tolerant, Genotypes

Location: BINA, Mymensing.

Start Date: 15-07-2011

End Date: 06-12-2011

Program Area: Crop-Soil-Water Management

Commodity: Rice, Soil salinity

Objectives:

To assess the effect of salinity stress at different growth stages of rice genotypes and to find out the tolerant genotype to salinity stress.

Methodology:

A pot experiment was conducted under varying levels of soil salinity with three rice cultivars in the pot yard of BINA, Mymensing. The soil was collected from 0-15 cm depth from the BINA farm. The advanced T. aman lines used as planting materials were: PNDB-100 (V1), PR-26305-M-2 (V2) and PNR-166 (V3). These advanced lines are under the process to be released as varieties in future at the BINA, Mymensingh. Soils of 8 kg/pot were fertilized with 40g/pot cow dung, 1.72g Urea/pot, 1.44g TSP/pot, 0.8g MP/pot. Each plastic pot was 21cm deep with 24cm diameter at the top. The total number of pots used in this study was 27 (3 cultivars × 3 salinity levels × 3 replications). One of 25 days old seedling was transplanted in each earthen pot on August 10, 2011. The commercial salt (NaCl) 13.06g and 17.41g were added to each pot for imposition of two saline treatments. These amounts of salt dissolved in 100 ml of water and this solution was then poured uniformly into the pots. The saline treatments were begun at 45 days after transplanting (DAT). After impositions of saline treatments, soil samples were analyzed and the following EC values were found. So=Control, no salt was added (Average EC value was 0.27 dSm-1), S1=Average EC value was 6dSm-1 and S2=Average EC value was 8 dSm-1.The collected data on various characteristics of the advanced lines under this study were statistically analyzed to find out the levels of significance, using the MSTAT-C package developed by Russel (1986). The mean differences were compared by Duncan’s Multiple Range test (DMRT).

Source of Information: Bangladesh J. Environ. Sci., Vol. 34, 95-98, 2018

Article Link (Online Journal): https://www.researchgate.net/publication/329505092_Effect_of_Salinity_on_Growth_and_Yield_Attributes_in_Transplanted_Aman_Rice_Genotypes

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Overall results indicated that advanced line PNR-166 was the best of all, advanced line PNDB-100 was intermediate and PR-26305-M-2 was less tolerant to salinity stress.

Knowledge Management: Journal