[问答题] 组合育种(combination breeding)
[名词解释] Mutation breeding(诱变育种)
[问答题] 超亲育种(transgression breeding)
[名词解释] 诱变育种(induced mutation breeding)
[问答题] 杂交育种(breeding by hybridization)
[名词解释] Cross breeding(杂交育种)
[名词解释] Genetically engineered breeding(基因工程育种)
[问答题] 简述回交育种的优缺点
[问答题,论述题] 试述回交育种的优缺点?