<P> For several decades, the Williams pear has been used actively as a parent in the production of new varieties: </P> <Table> <Tr> <Td> Date </Td> <Td> Originator </Td> <Td> Marketed </Td> <Td> Parent </Td> <Td> Other Parent </Td> <Td> Plant Patent Number </Td> </Tr> <Tr> <Td> 27 Aug 1974 </Td> <Td> Griggs </Td> <Td> California </Td> <Td> Max Red Bartlett </Td> <Td> Comice </Td> <Td> US plant patent 3599 </Td> </Tr> <Tr> <Td> 9 Aug 1988 </Td> <Td> Reimer </Td> <Td> Reimer </Td> <Td> Max Red Bartlett </Td> <Td> Comice </Td> <Td> US plant patent 6245 </Td> </Tr> <Tr> <Td> 30 Jan 2007 </Td> <Td> White </Td> <Td> Prem2P </Td> <Td> Max Red Bartlett </Td> <Td> Nijisseiki </Td> <Td> US plant patent 17387 </Td> </Tr> <Tr> <Td> 17 Apr 2007 </Td> <Td> Hart </Td> <Td> Prem1P </Td> <Td> Max Red Bartlett </Td> <Td> Nijisseiki </Td> <Td> US plant patent 17624 </Td> </Tr> </Table> <Tr> <Td> Date </Td> <Td> Originator </Td> <Td> Marketed </Td> <Td> Parent </Td> <Td> Other Parent </Td> <Td> Plant Patent Number </Td> </Tr> <Tr> <Td> 27 Aug 1974 </Td> <Td> Griggs </Td> <Td> California </Td> <Td> Max Red Bartlett </Td> <Td> Comice </Td> <Td> US plant patent 3599 </Td> </Tr>

Where are bartlett pears grown in the us