对盐碱地上大麦双列杂交组合进行的双列分析表明 :穗长、抽穗期及百粒重表现超显性 ,穗长、百粒重显性指向增效 ,抽穗期显性指向减效 ;单株穗数、总小穗数、株高及最大分蘖数表现部分显性 ,显性指向增效 ;单株产量、穗粒数、抽穗度、旗叶面积及穗粒重表现部分显性 ,显性指向减效。单株产量、抽穗期及单株穗数的广义遗传力在 70 %～ 80 %之间 ,遗传力属中等水平 ,对这些性状在早代不宜进行严格的直接选择。株高、每穗小穗数、最大分蘖数、穗粒数、穗长、抽穗度、旗叶面积、穗粒重与百粒重的广义遗传力均在 80 %以上 ,可根据育种目标对上述遗传力较高的性状进行直接选择 The double-row analysis on the combinations of barley and barley in saline-alkali soil showed that: the spike length, heading date and 100-grain weight presented super-dominant, spike length, 100-grain weight dominant and synergistic, The number of panicle spikes, total spikelets, plant height and maximum tiller number were partly dominant and dominantly pointed; the yield per plant, spike number per plant, heading degree, flag leaf area and spike weight were all dominant Sexual point to reduce. The general heritability of single plant yield, heading date and panicle per panicle is between 70% and 80%, and the heritability is medium level. Therefore, it is inappropriate for these traits to be strictly and directly selected in the early generation. The heritability of plant height, the number of spikelets per panicle, the maximum number of tillers, the number of spikelets per panicle, the spike length, the heading degree, the flag leaf area, the spikelet weight and the heredity of 100 kernels were above 80% Heritability higher traits for direct selection