Wild populations of trees usually carry a large "genetic load" . 树木的野生群体往往具有大量的“遗传负荷。”
2.
Most plants carry a large "genetic load" for deleterious recessive genes of which a few are homozygous and depress growth . 多数植物带有大量有害的隐性基因的“遗传负荷”，其中少数是纯合的，因而降低了生长。
3.
Wild populations of trees usually carry a large " genetic load " 树木的野生群体往往具有大量的“遗传负荷。 ”
4.
Most plants carry a large " genetic load " for deleterious recessive genes of which a few are homozygous and depress growth 多数植物带有大量有害的隐性基因的“遗传负荷” ，其中少数是纯合的，因而降低了生长。
