| Cultivar Name: |
Sonora
|
| Type |
Almond |
| Synonyms |
S.5A-20
|
| Patent |
Not Patented
|
| Parentage |
21-19A [Nonpareil x A1-30(Nonpareil x Eureka)] x 22-20 (Nonpareil x A1-30)
|
| Species |
Prunus dulcis
|
| Usage |
Scion
|
| Chill Requirement |
350 chill hours required
|
| Bloom Time |
-4
days relative to Nonpareil
|
| S Genotype |
SdSg |
| CIG |
XV |
| Nut Classification |
California
|
| Kernal Size |
Large
|
| Kernal % of Nut |
65%
|
| Nut Shell |
Paper
|
| Tree Size |
Medium
|
| Ripening time |
+1
weeks relative to
Nonpareil
|
| Self Compatible |
No - Not Self Compatible
|
| Pollinators |
Pollinates Nonpareil, NePlus Ultra, Peerless, Mission, Merced, and Thompson; incompatible with Solano and Vesta.
|
| Description |
Orig. in Davis, Calif., by Dale E. Kester, Agr. Expt. Sta., Univ. of California.
Introd. in 1983. Cross made in 1946; selected in 1954; tested as S.5A-20.
Considered less frost sensitive than other early blooming cultivars. Knocks well and produces high shelling percentages, but may have a tendency to alternate bear. Sets fruit on laterals. |
| References |
- The Brooks and Olmo Register of Fruit & Nut Varieties. Third Edition. 1997. ASHS Press, Alexandria, Virginia.
- Major California Almond Varieties. Almond Board of California Link
- California Almonds Informational Pamphlet. Almond Board of California. Link
- Fowler Nursery Commercial Fruit and Nut Tree Variety Descriptions. Link
- Duarte Nursery Link
- Sierra Gold Nurseries Variety Descriptions. Link
- UC Davis Fruit and Nut Research & Information. Link
- Burchell Nursery Fruit and Nut Tree Varieties. Link
- Dave Wilson Nursery. Link
- Characteristics of California Almonds, Growing Advantage. Link
- The Evaluation and Selection of Current Varieties; written by WESLEY K. ASAI, WARREN C. MICKE, DALE E. KESTER, AND DONALD ROUGH; Link
- A Mutation in ‘Nonpareil’ Almond Conferring
Unilateral Incompatibility, written by Dale E. Kester and Warren C. Micke ; Link
- Almond Variety Development, team leader Gradziel; Link
- Multidimensional Analysis of S-alleles from Cross-incompatible Groups of California Almond Cultivars; written Barckley, Uratsu, Gradziel, Dandekar; Link
- Almond Varieties and Uses, Riverwest Processing, Inc.; Link
- Burchell Nursery Almond Cross-Compatibility Chart; Link
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