Pollen Selection for Drought Tolerance in Sunflower

Totsky, I. V.; Lyakh, V. A.

doi:10.1515/helia-2015-0012

Cited by 13 publications

(9 citation statements)

References 7 publications

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“…Such positive influence of pollen selection for heat stresses from the differential response of the pollen grains with reference to fertilization could be due to allelic differences in the pollen grains (Ravikumar, Patil, Soregaon, & Hegde, 2007). The effect of pollen selection for biotic and abiotic stress tolerance is clearly visible at the sporophytic stage of plants (Ravikumar et al., 2007; Ravikumar, Patil, & Salimath, 2003; Sacher, Mulcahy, & Staples, 1983; Totsky & Lyakh, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…Selection at the pollen level has been proposed as a strategy to enrich the frequencies of genes associated with useful agronomic traits (Zamir & Vallejos, 1983). The effect of selection pressure under various biotic and abiotic stresses during the gametophytic generation was reported in several studies (Chi, Löffler, & Van Tuyl, 1999;Clarke et al, 2004;Domınguez et al, 2005;Frova, Portaluppi, Villa, & Goria, 1995;Maisonneuve, Hogenboom, & Den Nijs, 1986;Mandhu, Cresti, & Shivanna, 1992;Zamir, Tanksley, & Jones, 1982;Totsky & Lyakh, 2015) and has proved successful in increasing the frequency of tolerant progeny (Hormaza & Herrero, 1996;Ravikumar & Patil, 2002). Further, it is revealed that plants cope with heavy metal stress by making heritable changes in gene expression (Cong et al, 2019).…”

Section: Crop Sciencementioning

confidence: 95%

“…F I G U R E 4 Distribution pattern of three F 3 populations (GG, GC, and CC) of maize for seed yield and their components under stress condition (dash line represent the mean values, dots represent the outliers) stage of plants (Ravikumar et al, 2007;Ravikumar, Patil, & Salimath, 2003;Sacher, Mulcahy, & Staples, 1983;Totsky & Lyakh, 2015).…”

Section: Crop Sciencementioning

confidence: 99%

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Genetic evidence of pollen selection mediated phenotypic changes in maize conferring transgenerational heat‐stress tolerance

et al. 2020

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Structural genes of pollen are expressed in both sporophytic and gametophytic generations. This genetic overlap makes possible superior pollen genotype selection. Pollen selection is more effective than sporophytic selection since more pollen grains can be exposed to selection pressure at the haploid level. In this study, selection pressure was applied in the F1 generation at the pollen level for heat tolerance. The frequencies of heat‐tolerant plants were studied for seed yield in F2 and F3 generations and for seedling heat tolerance in F4 generations. The heat‐susceptible inbred line BTM4 was crossed to heat‐tolerant inbred line BTM6 of maize (Zea mays L.). In response to heat stress, we compared F2 plants produced by selfing of heat‐stressed pollen grains and without heat‐stressed pollen grains. The resulting F2 plants from heat‐stressed pollen grains showed significantly higher seed yield per plant (5.41 ± 0.31 g) than control F2 (2.90 ± 0.19 g) populations under stress. The selected and control F2 plants were also subjected to genotyping using simple sequence repeat (SSR) primers. We observed that the frequency of alleles from tolerant parents was higher in selected F2 populations, providing genetic evidence for positive effect of pollen selection. The heat tolerance of F4 generation progenies of the same cross suggested that the cyclic pollen selection for heat tolerance in F1, F2, and F3 generations has significantly improved the tolerance of progenies. The results from this study demonstrate that the feasibility of this approach seems to be promising for hastening the incorporation of desirable alleles in a short time.

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Section: Discussionmentioning

confidence: 99%

Section: Crop Sciencementioning

confidence: 95%

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Genetic evidence of pollen selection mediated phenotypic changes in maize conferring transgenerational heat‐stress tolerance

et al. 2020

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“…However, the reduction percentage is more intense in reproductive stages. Other researchers have referred to the formation of more unfilled seeds due to drought stress (Lyakh and Totsky, 2014; Totsky and Lyakh, 2015).…”

Section: Discussionmentioning

confidence: 99%

Effect of drought stress on agro-morphological traits in sunflower (Helianthus annuusL.) genotypes and identification of informative ISSR markers

darbani

Mehrabi

Pordad

et al. 2020

Plant Genet. Resour.

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The aims of the current study were to investigate the effect of drought stress on phenological and morphological traits of sunflower genotypes and to determine the important traits for identifying drought-tolerant and drought-sensitive cultivars. For this purpose, a lattice square-design experiment was conducted with 64 sunflower genotypes in an 8 × 8 pattern with two replications under non-stress and moisture-stress conditions (irrigation holding at the flowering stage) during 2 years 2016 and 2017. Measured and recorded traits were included the some phenological and morphological traits seeds. Sil-96 genotype showed the highest yield under both non-stress and moisture-stress conditions. Among the morphological traits, the head and stem diameters were highly significant to determine the final yield. In comparing the genotypes, it was concluded that the number of seeds per head was the most influential component affecting the yield. Furthermore, 1000-seed weight was the most important factor affecting grain yield under moisture-stress conditions. The result of association analysis study shows that 45 of inter-simple sequence repeat markers in a general linear model are associated with yield and yield component traits and 23 of them were verified in a mixed linear model (MLM) association approach. Also, 32 markers were informative for morpho-physiological traits and 24 of them verified using the MLM. Finally, 19 informative markers were identified for phenological traits and 10 of them were verified by the MLM.

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“…Exposure to water stress at critical stages such as germination, anthesis, and achene filling contributes up to 50% reduction in sunflower productivity (Kalarani et al 2004;Hussain et al 2008). Drought stress at the early growth stages reduces leaf area and stem elongation (Fatemi 2014), while at the anthesis stage, it causes pollen sterility and produces infertile achenes (Lyakh and Totsky 2014;Totsky and Lyakh 2015). Various studies have documented that water potential in sunflower decreases with increasing drought stress (Ghobadi et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Mitigating Drought Stress in Sunflower (Helianthus annuus L.) Through Exogenous Application of β-Aminobutyric Acid

Wasaya

Abbas

Yasir

et al. 2021

J Soil Sci Plant Nutr

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Drought stress is a serious threat for sustainable crop production throughout the world especially in arid and semi-arid regions and one of the main constraints to sunflower (Helianthus annuus L.) production. Different mitigation strategies, including foliar spray of osmolytes such as β-aminobutyric acid (BABA), help the crop to combat drought conditions. A 2-year field study was conducted to evaluate the effect of exogenous application of BABA on the growth, productivity, and net return of sunflower under drought conditions. The experimental treatments comprised drought levels, viz., control (well watered (WW)); drought stress at vegetative stage (DVS); and drought stress at reproductive stage (DRS). Drought-mitigating treatments comprised foliar application of BABA, viz., 0 mM (control), 25 mM, 50 mM, and 75 mM with three replications. Foliar application of BABA under drought condition had significant effect on physiological traits, yield, and yield-related traits. Foliar application of 75-mM BABA solution improved SPADchlorophyll value and membrane stability index and maintained higher relative water contents. It also improved 1000-achene weight and achene yield, and produced about 41% and 44% more achene yield during 2018 and 2019 respectively compared with other treatments. Significant and positive correlations were also observed between yield and yield-contributing traits of sunflower under different water stress conditions. This finding suggests that foliar application of 75-mM BABA may be used as a viable option for sunflower growers to enhance achene yield and net benefit under drought conditions in arid and semi-arid regions.

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Pollen Selection for Drought Tolerance in Sunflower

Cited by 13 publications

References 7 publications

Genetic evidence of pollen selection mediated phenotypic changes in maize conferring transgenerational heat‐stress tolerance

Genetic evidence of pollen selection mediated phenotypic changes in maize conferring transgenerational heat‐stress tolerance

Effect of drought stress on agro-morphological traits in sunflower (Helianthus annuusL.) genotypes and identification of informative ISSR markers

Mitigating Drought Stress in Sunflower (Helianthus annuus L.) Through Exogenous Application of β-Aminobutyric Acid

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