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Definition of Testcross
1. Noun. 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.
Generic synonyms: Cross, Crossbreeding, Crossing, Hybridisation, Hybridization, Hybridizing, Interbreeding
Definition of Testcross
1. [v -ED, -ING, -ES]
Lexicographical Neighbors of Testcross
Literary usage of Testcross
Below you will find example usage of this term as found in modern and/or classical literature:
1. Two-line Hybrid Rice Breeding Manual by Sant S. Virmani (2003)
"least 10 single plants are needed for a preliminary testcross. 2. Re-testcross.
From the preliminary testcross data, the varieties or lines that performed ..."
2. Molecular Markers in Plant Genome Analysis: Sponsored CRIS/ICAR Projects and by Andrew Kalinski (1995)
"... disequilibrium for testcross and per se performance of F2, F3, BC1, (to the
inbred) and recombinant inbred generations was derived for cases where a ..."
3. Hybrid Rice: Proceedings of the International Symposium on Hybrid Rice : 6 by International Rice Research Institute (1989)
"This nursery includes the testcross F^ and their corresponding male parents. ...
The re-testcross F[s and the progeny of single plants of restorer lines ..."
4. Rice Genetics II: Proceedings of the Second International Rice Genetics by International Rice Research Institute (1991)
"The F2 and testcross populations from other crosses all segregated in the ratio
of 15 resistant:1 susceptible and 3 resistant:1 susceptible, respectively, ..."
5. Hybrid Rice Technology: New Developments and Future Prospects : Selected by Sant S. Virmani, International Rice Research Institute (1994)
"... of heterosis in two rice hybrids CX Mao and SS Virmani Six basic generations (P;,
P2, F;, F2, B;, and B2) and triple testcross families of the heterotic ..."
6. Rice Genetics IV by Gurdev S. Khush, D. S. Brar, Bill Hardy (2001)
"Second, the frequencies of epistasis types I and II are greater in the RI population
than in the backcross and testcross populations. ..."
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