Response of sunflower (Helianthus annuus L) genotypes to PEG-mediated water stress

Vassilevska-Ivanova, R.; Shtereva, Lydia; Kraptchev, B.; Karceva, Tanya V.

doi:10.2478/s11535-014-0355-5

Cited by 8 publications

(8 citation statements)

References 22 publications

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“…De Leonardis, Petrarulo, De Vita, and Mastrangelo (2012) consider that the improvement of drought tolerance represented, and still represents, one of the major objectives of plant breeding. Sunflower genotypes may perform differently under different drought levels, and genotypic differences in drought tolerance could be, at least in part, attributed to the ability of plants to acclimate and induce different defence mechanisms under severe water stress (Vassilevska‐Ivanova et al, 2014). According to Ahmad et al (2009), dry biomass, plant height and root length indicate that seedling growth is a reliable and efficient procedure for screening sunflower hybrids for moisture stress tolerance.…”

Section: Discussionmentioning

confidence: 99%

“…We have observed the seedling mass gradually decreasing with an increment in PEG concentration, so that in the 10% PEG variant there was only half of the seedling mass obtained compared to control (water) treatment (Table 2; 0.30 vs. 0.60 g). Vassilevska‐Ivanova et al (2014) concluded that a number of physiological and biochemical features of sunflower plants, such as seed germination, shoot and root length, fresh and dry matter content, water content and the accumulation of proline, MDA and H 2 O 2 , are directly affected by PEG‐mediated water stress. In their research, the increase of MDA content was evident under severe water stress (−1.0 MPa), and the levels of proline increased in parallel with the severity of water stress in both tested sunflower genotypes.…”

Section: Discussionmentioning

confidence: 99%

“…The opinions on sunflower's drought resistance are different, so it was considered as tolerant crop (Mahpara et al, 2019; Markulj Kulundžić et al, 2016) as well as susceptible to drought (Hussain et al, 2014, 2015, 2018; Sarvari, Darvishzadeh, & Najafzadeh, 2017). It was reported that sunflower is particularly susceptible to water shortage at the germination stage (Ahmad, Ahmad, Ashraf, Ashraf, & Waraich, 2009; Amin, Saif‐ul‐Malook, Ashraf, & Bibi, 2014), and during early vegetative stages (Vassilevska‐Ivanova, Shtereva, Kraptchev, & Karceva, 2014). Therefore, it has become very important to elucidate the drought tolerance mechanisms of sunflower, with aim to improve its agronomic performance and obtain more resistant sunflower cultivars (Baloǧlu, Kavas, Aydin, Öktem, & Yücel, 2012).…”

Section: Introductionmentioning

confidence: 99%

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The effects of seed priming with sodium hydrosulphide on drought tolerance of sunflower (Helianthus annuus L.) in germination and early growth

Ocvirk

Špoljarević

Kristić

et al. 2020

Annals of Applied Biology

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Sunflower seeds (hybrid Luka) were primed with water (hydropriming) or sodium hydrosulphide (NaHS) solutions (0.1, 0.5, 1.0 and 1.5 mM NaHS) and subsequently dried to initial moisture content. Unprimed (control) and primed seeds were germinated in a growth chamber on paper towels moistened with water or polyethylene glycol (PEG) 6000 solutions (2.5, 5.0 and 10%), mimicking different drought stress levels. To evaluate the response of the primed seeds to drought in the germination stage, the germination energy (GE), germination rate (SG), seedling fresh mass (SW), hydrogen peroxide and free proline content (PRO), as well as lipid peroxidation rate (malondialdehyde; MDA) were established. The results show strong effects of the imposed drought stress and the metabolic response to oxidative stress through lower germinability and proline accumulation in seedlings. NaHS priming showed some positive effects on seed germination depending on stress level and the concentration of NaHS. Sunflower seeds were also germinated in pots filled with soil, at optimal (70% of field water capacity [FWC 70%]) and drought conditions (FWC 30%), in natural outdoors conditions. When plantlets developed the first pair of leaves, the number of plants (emergence rate [ER]), shoot mass (SM) and leaves mass (LM) were determined, as well as the total activities of catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR) and dehydroascorbate reductase (DHAR). There was a significant influence of an interaction between drought stress and priming, whereas drought stress inhibited plant emergence and early growth (SW and LW), and strong antioxidative enzymatic response to drought stress was clearly established in the leaves. Although seed priming showed some influence on enzyme activities, it was mostly related to seed hydropriming effects, while NaHS seed priming was less effective, influencing only DHAR. Altogether, the results imply that sunflower seed priming with NaHS may not have a prolonged impact on the antioxidative defence mechanism based on CAT and ascorbate/glutathione cycle during sunflower early growth in drought conditions.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effects of seed priming with sodium hydrosulphide on drought tolerance of sunflower (Helianthus annuus L.) in germination and early growth

Ocvirk

Špoljarević

Kristić

et al. 2020

Annals of Applied Biology

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show abstract

“…In this sense, many examples of oxidative stress and antioxidant defense mechanism in H. annuus subjected to drought (Kaya et al, 2006;Rauf et al, 2008;Ahmad et al, 2009;Petcu and Pâcureanu, 2011) have been reported. However, there have been limited studies concerning the response of sunflower genotypes developed after wide (interspecific or intergeneric) hybridization (Vassilevska-Ivanova et al, 2014b). In this paper we have presented two genetically stable lines that have intermediate characteristics between both parents and will likely be useful in sunflower breeding.…”

Section: Discussionmentioning

confidence: 99%

Drought Stress Responses of Sunflower Germplasm Developed after Wide Hybridization

Vassilevska-Ivanova

Shtereva

Stancheva

et al. 2016

Turkish JAF Sci.Tech.

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Response of sunflower germplasms viz. cultivated sunflower H. annuus and two breeding lines H. annuus x T. rotundifolia and H. annuus x V. encelioides developed after wide hybridization were used for identification of drought tolerant sunflower genotypes at the seedling growth stage. Three water stress levels of zero (control), -0.4, and -0.8 MPa were developed using polyethyleneglycol-6000 (PEG-6000). Physiological and biochemical stress determining parameters such as root and shoots length, fresh weight, antioxidant enzyme activities (superoxide dismutase (SOD), catalase (CAT), guaiacol peroxidase (GPO), ascorbate peroxidase (APX) and antioxidant metabolite content (total antioxidant capacity, total phenols and total flavonoids content) were compared between seedlings of all three genotypes. Results revealed that sunflower genotypes have similar responses at two osmotic potentials for shoot and root length and fresh weight. The data also showed that drought stresss could induce oxidative stress, as indicated by the increase level of ascorbate peroxidase and guaiacol peroxidase at -04 MPa in H. annuus cv 1114. Although the activity of ascorbate peroxidase and guaiacol peroxidase was differentially influenced by drought, the changes of antioxidant enzyme activities such as catalase, superoxide dismutase, guaiacol peroxidase, and ascorbate peroxidase subjected to drought stress follow a similar pattern in both breeding lines, indicating that similar defense systems might be involved in the oxidative stress injury in sunflowers. Increase in content of phenols and flavonoids were detected for all three genotypes under stress, which showed that these were major antioxidant metabolites in scavenging cellular H2O2.

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“…Sunflower wild types have very useful genes for drought tolerant genes because some subspecies of Helianthus genus have very wide adaptation capability for drought stress conditions such as H. mollis, H. deserticola, H. hirsutus, H. maximiliani, H. tuberosus, H. argophyllus etc. [20], [21]. Therefore, cultural types have some tolerant genes especially derived from these sources and also from some land races.…”

Section: Introductionmentioning

confidence: 99%

Effects of Drought Stress on Sunflower Stems and Roots

2016

IJAAEE

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Although sunflower (Helianthus annuus L.) is deep rooted crop, water stress is one the most reducing factors on sunflower seed yield because sunflower grows generally in dry lands and rainfed regions. When drought stress appears in dry summers, some morphological and physiological changes emerge on sunflower plants to defend themselves against drought and to overcome of this stress period. Roots and other plant organs mostly affected from drought stress during this period. Therefore, sunflower breeders should be aware of plant responses to drought stress to develop better drought resistant lines and cultivars in their breeding programs. The study was conducted to determine drought tolerances of sunflower male inbred lines developed in National Project under controlled conditions in Edirne, a city in Trakya region which has about 50% of sunflower areas in Turkey. Their root and plant developments and responses of fifty sunflower male lines were evaluated against drought stress in the study. Based on results, the most affected trait in the study was total fresh root weight and reduced over 90% especially at first stress conditions. Total fresh and dry weights followed this trait respectively. Sunflower inbred lines responded varyingly drought stress in the studied traits depending on when stress applied early or late. However, mostly sunflower plants influenced more at first stress conditions almost all traits because these traits started to be effective mostly while constituting yield at earlier plant development stages. Based on measured traits and damage index for drought stress, TT 135 R, TT 199 R, 9786 R and 9993 R inbred lines existed at drought tolerant lines. As results, dry and total fresh weight and total root fresh weight are important indicators evaluating of sunflower genotypes for drought tolerance. Besides, sunflower genotypes exhibited different tolerance levels against drought stress so higher tolerant male lines will be selected to develop hybrids regarding these traits.

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Response of sunflower (Helianthus annuus L) genotypes to PEG-mediated water stress

Cited by 8 publications

References 22 publications

The effects of seed priming with sodium hydrosulphide on drought tolerance of sunflower (Helianthus annuus L.) in germination and early growth

The effects of seed priming with sodium hydrosulphide on drought tolerance of sunflower (Helianthus annuus L.) in germination and early growth

Drought Stress Responses of Sunflower Germplasm Developed after Wide Hybridization

Effects of Drought Stress on Sunflower Stems and Roots

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