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Phenotypic Performance of Rice Landraces Under Salinity Stress in Reproductive Stage

MM Rashid
Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

L Hassan
Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh

SN Begum
Plant Breeding Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh 2202, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted using a randomized complete block design to explore the performance of rice landraces under salinity stress condition at Plant Breeding Division, Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh. The experiment was consisted of five replication and three different salt treatments viz., EC-6 dSm^-1, EC-8 dSm^-1, EC-12 dSm^-1 with one control condition. Analysis of variance for yield and yield contributing traits showed significant (p<0.01) variation among the genotypes. The performance of all the landraces with respect to yield and yield contributing traits differed from each other under saline condition. Hogla, TalMugur, Nona Bokhra were identified as tolerant to salinity compared to check Binadhan-8, Binadhan-10 and BRRI dhan47 at 12 dSm^-1 salinity treatment. All the traits under this study reduced in the salt stress except days to 50% flowering. In higher salt stress landrace Tal Mugur showed maximum yield followed by Ghunshi and Hogla. The findings of this study can be used for further study and also for developing salt tolerant rice varieties.

Keywords: Landraces, Salinity stress, Reproductive stage, Phenotypic study

Location: Plant Breeding Division at Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh

Start Date: 00-06-2015

End Date: 00-12-2015

Program Area: Crop-Soil-Water Management

Non-commodity: Performance

Objectives:

The objective of this study is to explore the performance of rice landraces under salinity stress condition.

Methodology:

The present experiment was carried out in the net house of the Plant Breeding Division at Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh during the period from June to December 2015. Ten rice genotypes including seven landraces (Hogla, DakhShail, KutePatnai, Ghunshi, Mondeshor, Tal Mugur, Nona Bokhra) and three released varieties (Binadhan-8, Binadhan-10 and BRRI dhan47) were used as plant material. The experiment was carried out in a Randomized Complete Block Design (RCBD) with five replication and three different salt treatments viz., EC-6 dSm^-1, EC-8 dSm^-1, EC-12 dSm^-1 with one control condition. Management practices such as irrigation and fertilization were performed by following the standard procedures (IRRI, 2002). Other intercultural operations were done whenever necessary. Morphological data were collected at appropriate growth stage of rice plant following the standard evaluation system indicated by IRRI (IRRI, 2002). The characters that were evaluated included days to 50% flowering, days to maturity, plant height (cm), panicle length (cm), number of effective tillers plant^-1, number of filled grains panicle^-1, number of unfilled grains panicle^-1, fertility (%) 1000 Seed weight (g) and yield panicle^-1 (g). The recorded data for different parameters were assembled and organized properly for statistical analysis using MSTAT-C following RCBD design.

Source of Information: Progressive Agriculture 28 (1): 1-6, 2017

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Among those landraces Hogla, Talmugur, Nona Bokhra were identified as tolerant to salinity compared to check Binadhan-8, Binadhan-10 and BRRI dhan47 at higher salt concentration (12dSm^-1). The performance of all the genotypes with respect to yield and yield contributing traits differed from each other under saline condition. All the traits under study reduced in the salt stress while days to 50% flowering increased. In normal condition DakhShail, Ghunshi, Mondeshor and Tal Mugur showed better performance for yield and other components. In higher salt stress Tal Mugur showed higher yield followed by Ghunshi and Hogla.

Knowledge Management: Journal