University of California, Riverside
College of Natural and Agricultural Sciences
UCR Citrus Variety Collection - Home
UCR Home UCR Web Sites
Search
Resources



Rocky Hill navel orange

Citrus sinensis (L.) Osbeck

 

CRC Has not been assigned a CRC number

PI 658377

VI 180

Rocky1Rocky4Rocky3  

Photos by Toni Siebert, CVC. Photo rights.

Source: Has not been planted by the CVC yet.

 

Parentage/origins: Selection of 'Thomson' navel from Rocky Hill, Lindcove, California. 'Thomson' originated as a limbsport of 'Parent Washington' at the ranch of AC Thomson in Duarte, California in 1891.
 

Rootstocks of accession: Carrizo citrange, C-35 citrange

 

Season of ripeness at Riverside: November to January

 

Notes and observations:

''Thomson Improved' and 'Thomson' are synonyms. 'Thomson' is a selection of 'Parent Washington' that differs in being earlier than 'PW', however with fruit that do not hang well and do not color as well as 'PW'. The tree is also less vigorous than 'PW'. (The Citrus Industry, 1967, 1:483). This selection is supposed to be earlier maturing with good color and production than the original 'Thomson'.

Availability: Commercially available in California through the Citrus Clonal Protection Program.

USDA Germplasm Resources Information Network page for Rocky Hill navel orange

 

 

 

 


How to Support the Collection


Page created by: Center for Visual Computing
Maintained by: tsiebert@ucr.edu

UC Seal