摘 要: | Presently cotton breeders are confronting seriouschallenges due to the extensive use of narrowgenetic base in Upland cotton,Gossypiumhirsutum.Unique germplasm that incorporatesnew alleles must be developed to provideimproved genetic potential for yield,pest anddisease resistance.Tetraploid species such as G.barbadense,G.tomentosum,and G.mustelinum
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