That text points out that all pears should be considered self-sterile when considered in terms of producing a commercial crop. The only decision to make is which variety(ies) to use for pollination.
The document recommends interplanting which to this day is unfortunately still not always done. In cases where it is done a 200% increase in production can occur! Many people getting fruit never considered they could be getting 100% more fruit. What does that add up to over 100 years in a pear orchard on standard rootstock?
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I’m working on Hosui and can’t find direct info about fire blight. My experience growing Hosui is that it is resistant. Anyone seen it get FB?
40 Bartletts! I’m wondering how many growers can accurately identify their Bartlett.
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I added several hundred more pear varieties. For example, the list now includes 137 varieties specifically for Perry.
I need to work on eliminating duplicates. Many varieties are listed 2 or more times with alternate spellings and more are under multiple PI numbers in the USDA database.
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I’m cleaning up information in the database and ran into a couple of problems, mostly from ScottSmith’s information, wagonwheel, and a list Clark posted in 2015. The list of pears has so many spelling errors that I sorted out just the list and cleaned up the spelling problems.
Not really a problem, but if you ever decide to go through it, be aware that the spelling is rough. Is Cornice perhaps Comice?
She genotyped all the pears at Corvallis and made a spreadsheet (I think 31 Bartlett duplicates)
Table S1
If you download the free visualization software Helium, you can see the pedigrees