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以9个小麦新品种(系)为材料,应用灰色关联度分析对株高、穗粒数、穗颈长、主茎生物产量、总生物产量、单株产量、千粒重和收获指数进行关联度分析.结果表明:与收获指数密切相关性状的灰色关联度大小依次是穗茎长>穗长>穗粒数>主茎生物产量>株高>千粒重>单株产量>总生物产量,与单株产量密切相关的性状是总生物产量>主茎生物产量>穗粒数>千粒重>株高>穗茎长>穗长>经济系数,因此提出小麦超高产育种目标应该在保证穗粒数和收获指数的基础上,通过获得较高的生物产量、增加穗长、穗粒数和提高千粒重途径,能够获得超高产.
Nine new wheat cultivars (lines) were used to analyze the relationship among plant height, grain number per spike, neck length, main stem biomass, total biomass, yield per plant, 1000-grain weight and harvest index by using gray relational analysis The results showed that the gray relational grade closely related to the harvest index was in the order of spike length> ear length> number of spike per head> biomass of main stem> plant height> 1000-grain weight> single plant yield> total biomass, The closely related traits are total biomass> main stem biomass> grains per spike> 1000-grain weight> plant height> spike length> spike length> economic coefficient. Therefore, the goal of super-high yielding wheat breeding should be to ensure the grain yield and harvest index Based on this, high yield can be obtained by obtaining higher biomass, increasing spike length, number of grains per spike and increasing the way of 1000-grain weight.