Inheritance of seed yield and yield-related traits in sunflower

Abdelsatar, Mohamed Ali; Elnenny, E. M. M.; Hassan, Tamer H.

doi:10.1080/15427528.2020.1723767

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…In contrast to wild progenitors, domesticated sunflowers have wider heads (21)(22)(23). Studies show that sunflower head diameter is a quantitative trait affected by many genetic loci, including both additive and non-additive genetic components (24)(25)(26). To assess the genetic mechanism of sunflower head diameter, many quantitative trait loci (QTL) studies have been conducted to identify loci regulating this trait.…”

Section: Introductionmentioning

confidence: 99%

Dissecting the genetic architecture of sunflower head diameter using genome-wide association study

Mural

et al. 2022

Preprint

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Sunflower (Helianthus annuus L.) plays an essential role in meeting the edible oil demand worldwide. Sunflower seed yield can be decomposed into several yield component traits, one of which is the head diameter. In 2019, 2020, and 2022, we evaluated the head diameter phenotypic variation on a set of diverse sunflower accessions (N=342) in replicated field trials. By combining three years of field data, the broad sense heritability (H2) of the head diameter trait was estimated to be 0.88. Then, a subset of N=274 accessions was genotyped by using the tunable genotyping-by-sequencing (tGBS) method, resulting in 226,779 high-quality SNPs. With these SNPs and the head diameter phenotype, the genome-wide association study(GWAS) was conducted using two statistical approaches: 1) the mixed linear model (MLM) and 2) the fixed and random model circulating probability unification (farmCPU). The MLM and farmCPU GWAS approaches identified 106 and 8 significant SNPs that were placed close to 53 and 21 genes, respectively. Two significant peaks were identified in MLM, with a strong signal on chromosome 10 and a less strong signal on chromosome 16. The farmCPU method detected the same signals on chromosomes 10 and 16 and several additional significant signals on other chromosomes. The head diameter associated genetic loci and the underlying candidate genes can be leveraged for further functional validation and serve as a basis for sunflower oil yield improvement.

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Section: Introductionmentioning

confidence: 99%

Dissecting the genetic architecture of sunflower head diameter using genome-wide association study

Mural

et al. 2022

Preprint

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“…Trotter] (Abraha et al., 2018), coriander ( Coriandrum sativum L.) (Gholizadeh et al., 2018), cowpea [ Vigna unguiculata (L.) Walp.] (Rodrigues, Damasceno‐Silva, Rocha, Bastos, & Santos, 2018), Indian mustard ( Brassica juncea L.) (Singh, Kumar, Kaur, Singh, & Kaur, 2019), and sunflower ( Helianthus annuus L.) (Abdelsatar, Elnenny, & Hassan, 2020).…”

Section: Introductionmentioning

confidence: 99%

Genetic analysis of safflower populations under water stress and nonstress conditions

Yeloojeh

Saeidi

2020

Agronomy Journal

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An important target in safflower (Carthamus tinctorius L.) breeding programs is its genetic improvement aimed at enhancing drought tolerance. The present experiment was carried out to study the combining ability and the nature of gene action for agronomic and physiological traits in safflower populations under water stress and non-stress conditions. In this study, 28 entries (21 F 2 populations derived from a half-diallel cross along with their seven parental lines) were evaluated under the above conditions. The interactions of general and specific combining abilities (GCA and SCA) with irrigation regimes were significant for the measured traits. A higher ratio of GCA/SCA effects (>0.70) for all the traits under both conditions indicated the greater importance of additive gene effects for their genetic control. The parental lines C129 and K115 were identified as superior general combiners for high seed yield (367.4 and 228.4 under nonstress; 166.1 and 175.2 under stress), and the parental line Saffire showed a good GCA for early maturity (-3.36 and-2.69, respectively, under nonstress and stress conditions). It may, therefore, be claimed that these parents can be beneficially exploited as the genetic materials in safflower breeding programs to improve seed yield, early maturity, and developing drought-tolerant cultivars.

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Gene action and heritability in bi-parental crosses of sunflower

Abdelsatar

Hassan

2020

Agron. Colomb.

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A field experiment was conducted in the contrasting locations of Kafr-El-Hamam/Sharkia and Al-Arish/North Sinai agricultural research stations of the Agricultural Research Center in Egypt. We estimated the additive and dominance genetic variances, as well as heritability in the broad and narrow senses for sunflower yield and its attributes in the cross L350 x L355 using North Carolina Design-III. The magnitude of the additive variances for all studied traits at both locations in proportion to the phenotypic variances was larger than the dominance variances. The average degree of dominance was greater than the unit, as also confirmed by the high narrow-sense heritability for most of the studied traits. The genetic improvement may be achieved through the selection of genotypes with larger head diameter and heavier seed weight which also showed moderate to high values of narrow-sense heritability. Thirty-two sunflower backcrosses were grouped into eight distinct clusters/groups by canonical analysis.

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Inheritance of seed yield and yield-related traits in sunflower

Cited by 3 publications

References 10 publications

Dissecting the genetic architecture of sunflower head diameter using genome-wide association study

Dissecting the genetic architecture of sunflower head diameter using genome-wide association study

Genetic analysis of safflower populations under water stress and nonstress conditions

Gene action and heritability in bi-parental crosses of sunflower

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