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Variety traits

Self-fertility in walnuts

Juglans regia L.

The ability of a walnut tree to produce viable fruit when pollinated by its own pollen. This trait is key to overcoming dichogamy and ensuring stable yields under isolated conditions.

In the reference 46 varieties crop Persian walnut, where this is mentioned in the description.

In walnuts, self-fertility is assessed as a qualitative genotype characteristic by observing the fruit set of isolated individuals growing at a significant distance from other trees. There are no standardized quantitative indicators or scoring scales for evaluating this trait in breeding programs.

A biological characteristic of the walnut is dichogamy, where the flowering periods of male and female inflorescences on the same tree often do not coincide. Self-fertile forms are highly valued in breeding, as they reduce yield dependency on the presence of pollinator trees and weather conditions that hinder pollen transfer.

General information about the subject — on the page Self-fertility.

Sources8

Varieties of Persian walnut mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Geisenheim

Active

Juglans regia L. · Persian walnut

NL
3 records

Amanda

Active

Juglans regia L. · Persian walnut

NL
3 records

Weinsberg 1

Active

Juglans regia L. · Persian walnut

NL
2 records

Red Rief

Active

Juglans regia L. · Persian walnut

NL
3 records

Coenen

Active

Juglans regia L. · Persian walnut

NL
3 records

Broadview

Active

Juglans regia L. · Persian walnut

NL
3 records

Amphyon

Active

Juglans regia L. · Persian walnut

NL
3 records

Rita

Active

Juglans regia L. · Persian walnut

NL
3 records

Bella Maria

Active

Juglans regia L. · Persian walnut

NL
2 records

Rote Linzer

Active

Juglans regia L. · Persian walnut

NL
4 records

Dionym

Active

Juglans regia L. · Persian walnut

NL
4 records

Cyril

Active

Juglans regia L. · Persian walnut

NL
2 records

Vebu 6

Active

Juglans regia L. · Persian walnut

Yukal Ivan Ivanovych

UA
2 records

Milotai kései

Active

Juglans regia L. · Persian walnut

Szentivanyi Peter

HU
2 records

Ela

Active

Juglans regia L. · Persian walnut

BF-LJ agr. sadjarstvo MB (SI)

SI
1 record

SER MADZhESTIK

Terminated

Juglans regia L. · Persian walnut

Ponomarenko Oleksandr Kostiantynovych

UA
2 records

Bonifac

Active

Juglans regia L. · Persian walnut

Szentivanyi Peter

HU
2 records

Rode Donaunoot

Active

Juglans regia L. · Persian walnut

Information not available - Contact NL authorities

NL
1 record

Rote Moselwalnuss

Active

Juglans regia L. · Persian walnut

Information not available - Contact NL authorities

NL
1 record

Desertnyj

Active

Juglans regia L. · Persian walnut

1 record

Nr. 286

Active

Juglans regia L. · Persian walnut

2 records