testcross

1. The kind of mating, using as one parent a known homozygous recessive, is called a testcross.
   这种杂交即利用一个已知的纯合的隐性作为一个亲本的杂交，称为测交。
2. Genetic Analysis on Combining Ability of Growth, Stem Form and Wood Basic Density of Pinus massoniana by testcross mating design
   基于马尾松测交系子代的生长、干形和木材密度GAC/SCA分析
3. New Counting Method of Linkage Mapping of Genes by Three-Point Testcross
   三点测交基因连锁作图计算的新方法
4. In the study, the feasibility of constructing a molecular genetic map using "double pseudo-testcross" strategy was discussed through establishing a F1 population.
   本研究通过构建梅花重瓣性F1作图群体，探讨了运用拟测交方法构建梅花分子遗传图谱的可行性。
5. On Genetic Mapping by Three-point Testcross
   浅谈三点测交作遗传图
6. Three better single or double low maintenance lines and two better single or double low restoring lines have be bred out by a lot of testcross for screen.
   用国内外单、双低品种（系）广泛测交，筛选到3份较好的单、双低保持材料，2份较好的单、双低恢复材料。
7. Previous researches about QTL mapping for kernel nutritional quality traits have been conducted with IHO, IHP and BHO high-oil corn germplasms and using single genetic background and testcross populations.
   前人主要针对IHO、IHP和BHO种质背景，利用单一遗传背景和测交群体对玉米籽粒品质性状开展了QTL定位研究。

noun

1. a cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from that of the offspring

   Synonym:    test-cross