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Variety traits

Self-fertility of sunflower

Helianthus annuus L.

Sunflower self-fertility is a genetically determined ability of the plant to set seeds through self-pollination in the absence of insects. This trait is critical for yield stability under adverse pollination conditions.

In the reference 20 varieties crop Sunflower, where this is mentioned in the description.

The degree of sunflower self-fertility is defined as the ratio of the number of filled achenes in heads isolated from external pollination to the control values. In breeding practice, a simplified method of counting the number of filled achenes is often used as an indirect indicator of the self-pollination capacity.

Sunflower population varieties are characterized by low self-fertility rates, averaging from 6.8% to 8.9%. Values at the level of 30% or lower are considered insufficient, which makes the crop dependent on entomophilous pollination and increases the risk of empty seeds when pollinator insects are scarce.

Hybrids with increased self-fertility provide more stable productivity in regions with low bee activity and unfavorable weather conditions. Furthermore, this trait plays an important role in seed production for maintaining the purity of maternal lines with minimal influence from cross-pollination.

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

Sources8

Varieties of Sunflower 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.

PR 64 G 20

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION US

AT FR HU IT
9 records

Pr64g46

Active

Helianthus annuus L. · Sunflower

Shatsman Dmytro Oleksandrovych

BG ES HR HU UA
13 records

Pr64h34

Active

Helianthus annuus L. · Sunflower

Pioneer Overseas Corporation US (USA)

ES HR UA
8 records

PR64E83

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

BG IT UA
12 records

P64ll05

Active

Helianthus annuus L. · Sunflower

Sadik El Sayed

ES UA
8 records

NS-H-52

Active

Helianthus annuus L. · Sunflower

CZ SK
7 records

Jupiter

Active

Helianthus annuus L. · Sunflower

VRANCEANU ALEXANDRU VIORELSTANCIU DANILPACUREANU JOITA MARIASTANCIU MARIA

ES RO
7 records

Maxtor

Active

Helianthus annuus L. · Sunflower

MAY AGRO SEED COPR.

IT
6 records

Alienor

Application submitted

Helianthus annuus L. · Sunflower

Rustica Prograin Genetique SA (FR)

FR UA
4 records

10023 R

Terminated

Helianthus annuus L. · Sunflower

Dobroudja Agricultural Institute - General Toshevo (BG)

BG
2 records

HA-26-OR

Active

Helianthus annuus L. · Sunflower

UA
5 records

8H463CL

Active

Helianthus annuus L. · Sunflower

DOW AgroSciences

IT
5 records

OLER

Terminated

Helianthus annuus L. · Sunflower

KOIPESOL SEMILLAS, S.A.

ES FR
3 records

Teknosol

Active

Helianthus annuus L. · Sunflower

MONSANTO TECHNOLOGY

IT
3 records

N23R

Terminated

Helianthus annuus L. · Sunflower

prof.Nina Nenova

BG
3 records

Kalamis

Active

Helianthus annuus L. · Sunflower

Ozen Ali

UA
4 records

Konsul

Terminated

Helianthus annuus L. · Sunflower

Shkorych Drahan, Zaitsev Oleksii Borysovych,

UA
4 records

Kh 762 V

Application submitted

Helianthus annuus L. · Sunflower

Popova Ol`ha Andriivna, Petrenkova Vira Pavlivna, Kuzmysheva Nadiia Viktorivna, Syvenko Valentyna Ivanivna, Alad`ina Zoia Kyrylivna, Makliak Kateryna Mykolaivna, Kyrychenko Viktor Vasylovych,

UA
5 records

ZL-678V

Terminated

Helianthus annuus L. · Sunflower

Kutischeva Nataliia Mykolaivna, Scherban` Serhii Vasyl`ovych, Scherban` Nataliia Fedorovna, Lytovchenko Borys Kyrylovych, Riabota Oleksandr Mykolaiovych,

UA
2 records

Fundulea 911

Protection expired

Helianthus annuus L. · Sunflower

RO
3 records

CMS 3

Active

Helianthus annuus L. · Sunflower

UA
2 records

Minunea

Active

Helianthus annuus L. · Sunflower

2 records

Flordani

Terminated

Helianthus annuus L. · Sunflower

2 records