桃的常规杂交育种存在很多弊端，给育种工作带来较大的困难。
Conventional intercrossing of peach have many shortcomings, which bring biggish difficulty to breeding work.
在中期，通过分子生物学技术辅助的常规杂交育种(分子标记辅助育种)就足以满足要求了。
In the medium term, conventional crossbreeding helped by molecular biology techniques (a technique called "marker assisted breeding") may suffice.
人们通过常规杂交育种、辐射育种、组织培养育种、多倍体育种、航天育种等手段培育了大量的花卉新品种。
Breeders have bred a great deal of new flower varieties by taking routine cross breeding, radiation breeding, tissue culture breeding, polyploidy breeding, and spaceflight breeding etc.
水稻育种从常规育种到杂交育种方式的转变，大大提高了水稻的产量和质量。
Since rice breeding changed from the conventional to the hybrid, rice production and quality have been greatly increased.
水稻育种从常规育种到杂交育种方式的转变，大大提高了水稻的产量和质量。
Since rice breeding changed from the conventional to the hybrid, rice production and quality have been greatly increased.
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