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选择利用RHT1、RHT2和RHT8、RHT9矮秆基因,采用多交、互交、聚合杂交方法,经多年选择选育出一系列矮秆、农艺性状好、适于CHA杂交制种的6个矮秆品系做亲本,进行杂交组配成9个矮×矮类型的矮秆CHA杂种小麦。1993～1995两年内在一般管理条件下对9个矮秆CHA杂种小麦产量及产量因素进行优势及相关分析:有4个杂种小麦产量超标,最高6.1％,穗粒数普遍增多,亩穗数减少,千粒重增减不一,穗粒重增加且与产量关系显著,其余因素与产量关系均未达到显著水平,其中以穗数关系最小。矮秆杂种小麦较高秆杂种小麦增产。
A series of dwarfing stems with good agronomic traits and suitable for CHA hybrid seed production were selected by multi-crossover, cross-crossover and poly-hybrid methods using RHT1, RHT2, RHT8 and RHT8 dwarfing genes. Line of parents to do the hybrid group dubbed 9 short × short dwarf CHA hybrid wheat. From 1993 to 1995, the yield and yield factors of nine dwarf CHA hybrid wheat under general management were analyzed under the general management conditions. The yield and yield of four hybrid wheat were over-standard, the highest was 6.1%, the number of spikelets was generally increased and the number of ears per acre was decreased , 1000-grain weight increase and decrease, grain weight increase and significant relationship with the yield, the rest of the factors and yield did not reach a significant level, with the smallest number of spikes. Dwarf hybrid wheat higher stalk hybrid wheat yield.