i dont know more about this but hope these weblinks helps. 

May be you know same

http://blast.jcvi.org/euk-blast/index.cgi?project=osa1

http://orygenesdb.cirad.fr/data.html

http://rice.plantbiology.msu.edu/

http://rice.genomics.org.cn/rice/index2.jsp

http://www.gramene.org/

http://ricedb.plantenergy.uwa.edu.au/

http://bmcgenomics.biomedcentral.com/articles/10.1186/s12864-015-1762-3

https://thericejournal.springeropen.com/articles/10.1186/1939-8433-5-17

https://ricediversity.org/data/

https://ricelab.plbr.cornell.edu/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3583025/

you may contact in these labs then can get your objective database 

Avinash

Thanks Avinash