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Evaluation of genetic potential of barley genotypes against salt stress under hydroponic conditions


The International Journal of Biological Research (TIJOBR)

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Fahad Bashir1, M. Zeeshan Basheer1, Ali Anwar2*, M. Adil1, Shuja-Ur-Rehman3, Muhammad Saqib Mushtaq5, M. Waqas4, Abbas Shoukat1Muhammad Mubashar Zafar6

*Corresponding author: alianwaruaf@gmail.com
Submitted Accepted Published
Apr 17,2018 Jan 24,2019 Feb 01,2019

2019 / Vol: 2 / Issue: 1


Abstract


Salinity is one of the most severe stress factors threatening the agriculture over the globe. Barley is considered as one of the most salt tolerant crops however different levels of tolerance are present among barley cultivars. A hydroponic experiment was carried out in wire house of Institute of Soil and Environmental Science, University of Agriculture Faisalabad to evaluate the performance of barley cultivars under different levels of salinity. Twelve’s barley genotypes (Haider-93, B-05011, B-15006, Joo-83, B-15003, B-15005, B-9008, B-14003, B-15002, B-9006, B-14011, B-14007) were grown against two salinity levels (100mM and 200mM) along with control. Crop duration was 6 weeks and data were recorded for root length, shoot length, fresh root weight, fresh shoot weight dry root weight and dry shoot weight. The experiment was arranged according to completely randomized design (CRD) with factorial arrangement having three replications. The shoot fresh weight was significantly affected by salt stress. As concentration of salts increased shoot fresh weight of barley genotypes decreases. It was observed that with increasing salt stress the root fresh weight was significantly decreased. However remarkable variation was found in different barley genotypes with application of salt stress. Shoot length was considerably influenced with application of salt stress and it was found that with increasing salt stress shoot length of barley genotypes significantly reduced. The mean data root length justifies that it was considerably decreased with enhancing NaCl stress in different barley genotypes.  The data shoot dry weight of different barley genotypes explained that shoot dry weight significantly reduced with increasing salt stress. Root dry weight was considerably influenced with application of salt stress and it was found that with increasing salt stress root dry weight of barley genotypes significantly reduced. Among twelve genotypes B-05011, B14003 and B-9006 were found salt tolerant, While B-15006, B-15003 and B-15005 were found most salt sensitive as compared to other barley genotypes. The selected tolerant genotype could be grown as natural in saline soil to get better growth (yield as well as good material for breeding programme.

Keywords: salinity, yield, sodium, barley, potassium, K+/Na+


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