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一、育种目标及选育过程 (一) 育种目标的设想:北部冬麦区解放以来经历了五次品种更换,品种主要特点变化的总趋势是丰产潜力六的品种不断取代落伍的品种;穗重逐步提高(穗粒数和千粒重均有所增加),穗数减少;本区固有的干旱生态型品种——多穗型以其产量不高、感病和易倒伏的缺点逐渐被淘汰,80年代种植
I. Breeding Objectives and Breeding Process (I) Proposal for Breeding Objectives: The northern winter wheat area has undergone five species changes since its liberation. The general trend of the main characteristics of the varieties is that the varieties with high yield potential six continue to replace the outdated varieties. The spike weight Gradually increased (grain number per spike and grain weight per thousand increased), and the number of spikes decreased. The inherent drought-ecotype variety in this area, the multi-spike type, was gradually eliminated due to its low yield, shortages of susceptibility and susceptibility to lodging. In the 1980s Planting