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不育系龙特甫A变异株有4种类型。抽穗前温度影响其育性的作用最大。r微效恢复基因的存在也是影响育性的因素。
There are 4 types of sterile line Longtefu A variant. The effect of temperature before heading on fertility is greatest. r The existence of the micro-recovery gene is also a factor that affects fertility.