用水稻高秆抗锈病(DDTT)和矮秆不抗锈病(ddtt)作亲本,通过杂交

用水稻高秆抗锈病(DDTT)和矮秆不抗锈病(ddtt)作亲本,通过杂交育种培育矮秆抗锈病(ddTT)新品种.下列叙述不正确的是(  )

A.杂交育种的原理是基因重组
B.杂交育种可以集中亲本优良性状
CF1的表现型是高秆抗锈病
D.杂交育种可以产生新基因

答案

解:A、杂交育种的原理是基因重组,A正确;
B、杂交育种的优点是将不同个体的优良性状集中到同一个个体上,即集优B正确;
C、用水稻高秆抗锈病(DDTT)和矮秆不抗锈病(ddtt)作亲本,F1DdTt)的表现型是高秆抗锈病,C正确;
D、杂交育种可以产生新基因型,但不能产生新基因,D错误.
故选:D

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