Felix
TerminatedHelianthus annuus L. · Sunflower
IT
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.
AS 35114
ActiveHelianthus annuus L. · Sunflower
UA
3 records
YeS Stark
ActiveHelianthus annuus L. · Sunflower
Bushulian Oleh Volodymyrovych, Shatsman Dmytro Oleksandrovych,
UA
2 records
XF 469
WithdrawnHelianthus annuus L. · Sunflower
PIONEER HI-BRED INT
IT
1 record
TOLEDO 61
TerminatedHelianthus annuus L. · Sunflower
CECOSA
ES
1 record
Terner
ActiveHelianthus annuus L. · Sunflower
Tovarystvo z obmezhenoiu vidpovidalnistiu «TK ART-AHRO»
UA
2 records
Sayad
TerminatedHelianthus annuus L. · Sunflower
Omelchenko Serhii Volodymyrovych, Semenchenko Oleh Valeriiovych,
UA
2 records
SERELIA
ActiveHelianthus annuus L. · Sunflower
Joel Meunier
UA
1 record
Santos Plius
ActiveHelianthus annuus L. · Sunflower
Kalinichenko Artem Oleksandrovych
UA
2 records
Remil
Protection expiredHelianthus annuus L. · Sunflower
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
FR
2 records
Rembo
TerminatedHelianthus annuus L. · Sunflower
Nicolae Parvu
UA
2 records
RA1001735
ActiveHelianthus annuus L. · Sunflower
RAGT 2N S.A.S
IT
1 record
Prometei
ActiveHelianthus annuus L. · Sunflower
Sliusar E.L., Borodin Serhii Heorhiiovych, Lebid` Zoia Ivanivna, Bihun Mariia Semenivna, Nikitchyn Dmytro Ivanovych, Tolmachov Viktor Valentynovych,
UA
1 record
PR64J50
WithdrawnHelianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
IT
1 record
PHA 133
TerminatedHelianthus annuus L. · Sunflower
Pioneer Hi-Bred International Inc (US)
FR
1 record
OS-H-4
WithdrawnHelianthus annuus L. · Sunflower
Poljoprivredni Institut Osijek, HR
HR
1 record
OS-H-3
WithdrawnHelianthus annuus L. · Sunflower
Poljoprivredni Institut Osijek, HR
HR
1 record
Osman
Application submittedHelianthus annuus L. · Sunflower
SYROTIUK NATALIIA, SUKONNYK OKSANA, SUKONNYK OLEH, SUKONNYK IHOR
UA
2 records
NKARMONY
Protection expiredHelianthus annuus L. · Sunflower
SYNGENTA SEEDS AG, CH
FR
1 record
NS H 8063
ActiveHelianthus annuus L. · Sunflower
Grahovac Nada, Gvozdenac Sonja, Radeka Iija, Jockovic Milan, Jocic Sinisa, Cvejic Sandra,
UA
2 records
Novo Ale
ActiveHelianthus annuus L. · Sunflower
Reva IAroslav Mykolaiovych
UA
2 records
NKAlegro
WithdrawnHelianthus annuus L. · Sunflower
Syngenta Crop Protection AG, Seeds Division, CH
HR
1 record
NA Sumatra
ActiveHelianthus annuus L. · Sunflower
Cvejic, Sandra Dusanic, Nenad Jockovic, Milan Miklic, Vladimir Mykhno, Mykola Jocic, Sinisa
UA
2 records
M94K07
WithdrawnHelianthus annuus L. · Sunflower
Mehmet Ali Keceli
UA
2 records