[How long the way from QTL to QTGS?].
Most of the important economic traits in higher plants are quantitative traits. Genetic basic researches for quantitative traits were strongly promoted. This article fully elaborated the complicated relationship between quantitative phenotype and its genotype, introduced the recently developed strategy of fine mapping. discussed the current difficulty and hardness among the process of dissect the genetic basis of target traits, then brought forward several research direction that remained to be improved , and finally gave a view of such prospect. Generally speaking,, however, a QTL is still a considerable DNA fragment frequently containing multiplex genes. We also provided some ways and means from QTL coarse locus research to the variation at quantitative trait gene (QTG) level and from QTG to quantitative trait nucleotides (QTN) corresponding to alleles resulted from the intragenetic polymorphism. This is a major challenge for quantitative genetics in the post-genome era.
Zeng
Chang-Ying
CY
National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China. flyer97@webmail.hzau.edu.cn
Xu
Fang-Sen
FS
Memg
Jin-Ling
JL
Wamg
Yun-Hua
YH
Hu
Cheng-Xiao
CX
D000818:Animals; D002874:Chromosome Mapping; D017343:Genes, Plant; D006801:Humans; D006824:Hybridization, Genetic; D010641:Phenotype; D040641:Quantitative Trait Loci