Salt Tolerance Identification and Evaluation of Barley Germplasms

In order to identify and evaluate the salt tolerance of barley,tesit of Naclstress on the germination and grouth of different barley cultivars were studied. The effect of Na Cl stress on the germination and growth of different barley cultivars were studied. The result showed that with increasing of Na Cl stress concentration,relative germination rate of barley seed decreased,salt injury index increased with the increasing of Na Cl stress concentration. There are some differences about seed germination between different barley cultivars,Sunong 6472,Yan 99218,C 2118,Mei 97-1338,Numar and Haiyandamai showed strong salt tolerance. Through the salt soil( soil salt concentration is 4 ‰) and desalting soil test,found that the spike number,grain number per spike of barley under saline soil conditions ware significantly lower than that under desalting soil conditions,and the1000 grain weight of barley under saline soil conditions was higher than that under desalting soil conditions. Plant height of all cultivars under saline soil was lower than that under desalting soil. The grain yield of Haiyandamai,Hu 01- 2946 and Sunong 6472 respectively is 4 344,4311 and 4 282. 5 kg·hm- 2when growth in saline soil,so those are the best salt tolerant cultivars of this test. This study hot only provides a theoretical basis for barley salt tolerance breeding,but also identified slt tolerant cultivars for barley planting in saline area.