8Kh288KPDM
TerminatedHelianthus annuus L. · Sunflower
Steve Thompson
UA
2 records
Variety traits
Drought tolerance of sunflower
Helianthus annuus L.
A complex adaptive trait of sunflower that determines yield stability under moisture deficit due to morphophysiological mechanisms and biochemical regulation of metabolism.
In the reference 75 varieties crop Sunflower, where this is mentioned in the description.
The evaluation of sunflower tolerance is based on biochemical markers, such as the accumulation of free proline, where an index of 4.1 and above indicates high tolerance. Also taken into account are the ability of roots to penetrate deep soil horizons, the water-holding capacity of leaves due to cuticular waxes, and the preservation of cell membrane integrity during dehydration.
From an agronomic perspective, drought tolerance is expressed by a higher threshold for pollen sterilization during high temperatures at the flowering stage and the ability to rapidly recover assimilation after stress. The critical periods for the crop are flowering and seed filling, where moisture deficiency can reduce yield by half, making it effective to maintain a plant density of 45–55 thousand plants per hectare in arid zones.
General information about the subject — on the page Drought tolerance.
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.
VPERED
TerminatedHelianthus annuus L. · Sunflower
Benko Mykola Ivanovych
UA
2 records
TOLEDO 1
WithdrawnHelianthus annuus L. · Sunflower
CECOSA
ES
1 record
Sharan KLP
TerminatedHelianthus annuus L. · Sunflower
Reva IAroslav Mykolaiovych
UA
2 records
Rimi-2/Rimi-2
ActiveHelianthus annuus L. · Sunflower
Goran Malidza, Sinisa Jocic, Dragan Skoric,
UA
2 records
Radar RM
WithdrawnHelianthus annuus L. · Sunflower
EURALIS GENETIQUE
IT
1 record
Obrion
ActiveHelianthus annuus L. · Sunflower
Reva IAroslav Mykolaiovych
UA
2 records
NA Lira
ActiveHelianthus annuus L. · Sunflower
Cvejic, Sandra Dusanic, Nenad Jockovic, Milan Miklic, Vladimir Mykhno, Mykola Jocic, Sinisa
UA
2 records
MAGASUN
ActiveHelianthus annuus L. · Sunflower
VANDERHAVE RESEARCH
ES
1 record
LHA270/05
Application submittedHelianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
IT
1 record
LG 56.71 CL
WithdrawnHelianthus annuus L. · Sunflower
SK
2 records
LG5671HO
WithdrawnHelianthus annuus L. · Sunflower
LIMAGRAIN VERNEUIL HOLDING S.A.
IT
1 record
LG 55.86
WithdrawnHelianthus annuus L. · Sunflower
SK
1 record
LHA 455/44
TerminatedHelianthus annuus L. · Sunflower
LIMAGRAIN VERNEUIL HOLDING S.A.
IT
1 record
LG5631
WithdrawnHelianthus annuus L. · Sunflower
LIMAGRAIN VERNEUIL HOLDING S.A.
IT
1 record
Lakaren SU
ActiveHelianthus annuus L. · Sunflower
Pryvatne Pidpryiemstvo "NASINNEVE"
UA
2 records
IR-92
TerminatedHelianthus annuus L. · Sunflower
Meszaros Laszlo / Piszker Zoltan / Walcz Ilona / Takacs Laszlo
HU
1 record
ES ARKADIIA
TerminatedHelianthus annuus L. · Sunflower
Didier Sauvaire
UA
2 records
Aston
ActiveHelianthus annuus L. · Sunflower
Tovarystvo z obmezhenoiu vidpovidalnistiu «TK ART-AHRO»
UA
2 records
ABS 5319
WithdrawnHelianthus annuus L. · Sunflower
Agro Bio Seed Ltd, BG
BG
1 record
FS5582B
TerminatedHelianthus annuus L. · Sunflower
MONSANTO TECHNOLOGY
LG5479HO
WithdrawnHelianthus annuus L. · Sunflower
Limagrain Europe, FR
FR
1 record
PH 505 B
TerminatedHelianthus annuus L. · Sunflower
Pannar Seed Ltd (GB)
FR
1 record
ŠOKAC
TerminatedHelianthus annuus L. · Sunflower
Poljoprivredni Institut Osijek, HR
HR
1 record