Weedy rice always occurs sympatrically with cultivated rice, and genes from cultivated rice can be easily incorporated into the gene pool of weedy rice through recurrent crop-to-weed gene flow and introgression.
Inter-specific breeding offers a way of expanding the gene pool of cultivated rice and enlarging the range of genetic variation available for plant improvement (McCouch et al. 2007).
This knowledge is particularly important for assessing transgene escape to weedy rice and its biosafety consequences when a transgene with natural selective advantages is possibly added and spread to the gene pool of weedy rice.
As the direct gene pool of cultivated rice (AA genome), wild Oryza species possess abundant genetic diversity.
We selected PsbS-KO, a putative knockout mutant for OsPsbS1, from a pool of T-DNA insericen rice lines.
Mole coloradito ($18) looks right, a stark yin and yang of chicken leg in a rust-red pool encroaching on a mound of rice, but the sauce barely hints at a true mole's depths.
A total of 51 nSSR were selected from the larger pool of nSSRs available for rice based on the fact that they were well distributed throughout the genome, amplified well in multiplex arrays in both wild and cultivated germplasm, and were optimized for use in diversity analysis (Additional file 1: Table S3) (Garris et al. [2005]; Edwards [2005]).
A pool of leaves from ten rice seedlings were collected as one biological replicate, and each stress treatment was repeated three times.
The wild species of Oryza, representing the AA, BB, CC, BBCC, CCDD, DD EE), FF, GG, HHJJ and HHKK genomes provide an important pool of useful genes for rice improvement [ 2, 3].
