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Identification of Salt Tolerant Barley Genotypes for Coastal Region of Bangladesh

M. R. ALI
Plant Breeding Division, Bangladesh Agricultural Research Institute,Joydebpur, Gazipur-1701, Bangladesh

M. SHALIM UDDIN*
Plant Breeding Division, Bangladesh Agricultural Research Institute,Joydebpur, Gazipur-1701, Bangladesh

SHAMIM ARA BAGUM
Plant Breeding Division, Bangladesh Agricultural Research Institute,Joydebpur, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

Identification of salt tolerant barley (Hordeum vulgare L.) genotypes and effects of different levels of salinity on their growth, grain development and yield were studied. One hundred and eighty nine barley germplasms were subjected in five levels of NaCl concentration which were equivalent to Electrical Conductivity (EC) of 0, 10, 15, 20 and 25 ds/m. Among the genotypes 39 proved to be saline tolerant at 15 ds/m of salinity. Out of 39 genotypes, 33 were evaluated at Sonagazi and Patuakhali salt area of Bangladesh. All the genotypes were evaluated in the non-saline area at BARI, Gazipur to observe their performance in normal soil. Highest grain yield was recorded from the genotypes BSH-32 and BSH-142 over the three locations. Significantly higher yield was recorded from the experimental site of Gazipur followed by Patuakhali and Sonagazi. Tiller per plant had positive correlation with grain per spike, maturity and grain yield. Grain per spike and maturity was positively correlated with grain yield. From the multivariate analysis it appears that 1st, 2nd and 3rd principal components together account for 79 per cent of the total experimental variation. The two selected genotypes are expected to be released for commercial cultivation in the saline area of Bangladesh.

Keywords: Barley, Genotypes, Selection, Salt tolerant, Bangladesh

Location:

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Barley

Objectives:

The present study was conducted to find out the salt tolerance barley genotypes and the effect of different levels of salinity on the growth, grain development and yield.

Methodology:

The study was conducted using 189 Barley (Hordeum vulgare L.) germplasms at BARI, Gazipur. Five levels of NaCl concentration which were equivalent to EC of 0, 10, 15, 20 and 25 ds/m were used in the experiment. One hundred seeds of each entry were germinated for all the treatments. Germination percentage at 15 ds/m used to characterize the degree of tolerance where 0-20 (highly susceptible = HS), 21-40 (susceptible = S), 41-60 (moderate = M), 61-80 (tolerant = T) and 81-100 (highly tolerant = HT). Field experiments were conducted at BARI, Gazipur (a non-saline area), and Potuakhali, Noakhali, Khulna (saline areas) in the year 2002-2003 barley growing season. In all the locations experiment was carried out in a Randomized Complete Block Design with three replications. Each entry was sown continuously in a row of 2.5 m long with a spacing of 30 cm between rows. NPK fertilizers at the rate of 100: 60: 40 kg/ha were applied. Soil salinity was measured monthly from three random samples of each field in the top 0-15 cm soils during cropping season. Electrical conductivity in soil solution was measured using conductivity bridge (model- EIJKLKAMP pH/EC 18.38).

Source of Information: Bangladesh J. Bot. 36(2): 151-155, 2007 (December)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It appears that selection for the improvement of grain yield in barley can be made based mainly on grain per spike, plant height and spike length. The highest grain yield over the locations was recorded from advanced lines BSH-32 and BSH-142, which may be released as varieties for commercial cultivation in saline soils of Bangladesh.

Knowledge Management: Journal