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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.

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.

LG 56.65 M

Active

Helianthus annuus L. · Sunflower

Tuson Jean-Mark

BG FR HR IT RO SK +1
18 records

Mas 80 IR

Active

Helianthus annuus L. · Sunflower

Zhoel` Meun`er

ES FR HR IT RO UA
16 records

LG 55.80

Active

Helianthus annuus L. · Sunflower

Limagrain Verneuil Holding (FR)

BG IT SK UA
13 records

LG 50521 CLP

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

ES IT RO SK UA
12 records

P 64 LC 108

Active

Helianthus annuus L. · Sunflower

Sadik El Sayed

BG ES UA
14 records

P 64 LE 99

Active

Helianthus annuus L. · Sunflower

Revol Benoit

HR HU IT UA
15 records

MAS 92 CP

Active

Helianthus annuus L. · Sunflower

Maisadour Semences, F

ES RO SK UA
10 records

LG 5543 CL

Active

Helianthus annuus L. · Sunflower

LIMAGRAIN VERNEUIL HOLDING S.A.

BG IT SK UA
12 records

LG 5555 CLP

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

BG IT RO UA
12 records

LG 5463 CL

Active

Helianthus annuus L. · Sunflower

Remy Rouane

ES IT UA
11 records

LG 50689 SX

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

BG ES HU IT RO UA
11 records

P 63 LL 124

Active

Helianthus annuus L. · Sunflower

Pioneer Overseas Corporation US (USA)

AT FR HR UA
12 records

MAS 90 F

Active

Helianthus annuus L. · Sunflower

MAS SEEDS

ES IT RO UA
10 records

MAS 96 P

Active

Helianthus annuus L. · Sunflower

MAS Seeds,FR

BG ES IT UA
8 records

LG 5662

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

FR IT SK UA
10 records

LG 50514

Active

Helianthus annuus L. · Sunflower

Limagrain Europe S.A.S

ES FR IT UA
10 records

RW 666

Active

Helianthus annuus L. · Sunflower

NOVARTIS SEEDS

BG ES FR HU UA
9 records

LG5671 CLP

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

IT SK UA
9 records

NK Brio

Active

Helianthus annuus L. · Sunflower

SYNGENTA SEEDS AG, CH

CZ HR HU
8 records

P 64 HH 106

Active

Helianthus annuus L. · Sunflower

Sadik El Sayed

ES PT UA
11 records

LG 5661CL

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

BG IT SK UA
8 records

LG50779 SX

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

IT RO SK UA
11 records

LG 50510

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

IT SK UA
10 records

LG 59580

Active

Helianthus annuus L. · Sunflower

Remy Rouane

BG IT UA
8 records

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