Screening Spinach Cultivars for White Rust Resistance and Bolting

Goreta, Smiljana; Leskovar, Daniel I.

doi:10.21273/horttech.16.1.0162

Cited by 5 publications

(11 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, oriental cultivars that Japanese and other Asian customers prefer bolt easy Chun, et al [9]. Low bolting rate was found in the cultivars 'Fidalgo', 'Springfield', and 'Springer' Goreta, et al [10], which will improve the efficiency of breeding and producing in spinach. [15].…”

Section: Different Genotypes In Spinachmentioning

confidence: 99%

“…At present, the identification of morphological index of bolting is the common evaluation criteria for the bolting traits and it mainly depends on subjective observation, measurement and statistics. In previous study, bolting rate was estimated as percentage of plants bolted per replication, that is: 0 = none; 1 = 1% to 20%; 2 = 21% to 40%; 3 = 41% to 60%; 4 = 61% to 80%; 5 = 81% to 100% Goreta, et al [10]. In addition, an accession was deemed 'early bolting', if any plant started stem elongation earlier than 60 d after planting, 'intermediate' if bolting between 60 and 70 d, and 'late bolting' after the 70 d Chitwood, et al [11].…”

Section: Evaluation Criteria For the Bolting Traitmentioning

confidence: 99%

“…And its flowerstalk length increased with increasing photoperiod (e.g., at 14 DAT, from 15 mm at the shorter photoperiods to 80 mm at 16 hours/ day) Chun, et al [17]. Before transplanting, short photoperiod treatments can retard bolting while long-day exposure induces bolting Goreta, et al [10].…”

Section: Different Genotypes In Spinachmentioning

confidence: 99%

“…The combination of physiological indexes and morphological index would be helpful to the study of the bolting trait. Genetic variation among spinach and resistance to bolting among different cultivars for bolting has been documented for many years Goreta, et al [10], and therefore late-bolting cultivars could be developed through breeding efforts Brandenberger, et al [34]. Areas with mild climate conditions are suitable for growing winter spinach, and successful production depends on choosing late bolting cultivars.…”

Section: Prospects Of the Bolting Trait In Spinachmentioning

confidence: 99%

“…For example, three cultivars (Fidalgo, Springfield, and Springer) showed late-bolting traits from a total of 18 cultivars during 8 years in the Winter Garden region of Texas Goreta, et al [10]. For further study, we can detect the different varieties of spinach from mild climate condition in winter to take full advantage of the bolting genetic information for breeding.…”

Section: Prospects Of the Bolting Trait In Spinachmentioning

confidence: 99%

See 4 more Smart Citations

Management of the Tolerance to Bolting for Spinach (Spinacia Oleracea L.): Retrospect and Prospects

Li¹,

Liu

et al. 2020

BJSTR

View full text Add to dashboard Cite

Spinach (Spinacia oleracea L.) is an important and nutritious green leafy vegetable, and there are rich carotenoids, folate, vitamin C, calcium and iron in spinach. The yields of spinach were approach 28 million tons in 2017 all over the world (FAO). However, the earlier bolting is one of the important limiting factors affecting the quality and yield in spinach, and it is an instant task to preventing the earlier bolting and creating the bolting tolerance germplasm resources in spinach breeding. The evaluation criteria is essential to determine whether it has entered the reproductive stage and to judge the timing of harvesting or breeding, but the evaluation criteria for the bolting trait in spinach had not been established yet. Bolting is controlled by some endogenous and environmental factors. The bolting variation provided extremely rich resources in spinach, and the abiotic stresses could induce bolting and the biochemical regulations such as endogenous and exogenous hormones could also influence the bolting mechanism.A diverse range of endogenous and environmental signals regulates bolting, and these signals are integrated into a single decision. The study on bolting characteristics was summarized in terms of factors influencing bolting and inheritance of bolting characteristics, to serve as reference for the further study in spinach. Because of its sensitivity to photoperiod, long-day exposure induces bolting in spinach, which is not good for the year-round production in spinach. Manipulating the day length and temperature during the growing process of spinach can prevent bolting. The previous studies showed that bolting tolerance is associated with an expression of an integrative gene network involved in environmental perception, hormone signalling, and flowering in the shoot apical meristem. However, the genotypic tolerance to bolting, particularly important for breeders, is still poorly understood in spinach. This review on bolting trait may lay the foundation for bolting-resistant breeding in spinach.

show abstract

Section: Different Genotypes In Spinachmentioning

confidence: 99%

Section: Evaluation Criteria For the Bolting Traitmentioning

confidence: 99%

Section: Different Genotypes In Spinachmentioning

confidence: 99%

Section: Prospects Of the Bolting Trait In Spinachmentioning

confidence: 99%

Section: Prospects Of the Bolting Trait In Spinachmentioning

confidence: 99%

See 3 more Smart Citations

Management of the Tolerance to Bolting for Spinach (Spinacia Oleracea L.): Retrospect and Prospects

Li¹,

Liu

et al. 2020

BJSTR

View full text Add to dashboard Cite

show abstract

Genome-wide association study and genomic prediction of white rust resistance in USDA GRIN spinach germplasm

Shi

Bhattarai

Xiong

et al. 2022

Horticulture Research

View full text Add to dashboard Cite

White rust, caused by Albugo occidentalis, is one of the major yield-limiting diseases of spinach (Spinacia oleracea) in some major commercial production areas, particularly in southern Texas in the United States. The use of host resistance is the most economical and environment-friendly approach to managing white rust in spinach production. The objectives of this study were to conduct a genome-wide associating study (GWAS), to identify single nucleotide polymorphism (SNP) markers associated with white rust resistance in spinach, and to perform genomic prediction (GP) to estimate the prediction accuracy (PA). A GWAS panel of 346 USDA (US Dept. of Agriculture) germplasm accessions was phenotyped for white rust resistance under field conditions and GWAS was performed using 13 235 whole-genome resequencing (WGR) generated SNPs. Nine SNPs, chr2_53 049 132, chr3_58 479 501, chr3_95 114 909, chr4_9 176 069, chr4_17 807 168, chr4_83 938 338, chr4_87 601 768, chr6_1 877 096, and chr6_31 287 118, located on chromosomes 2, 3, 4, and 6 were associated with white rust resistance in this GWAS panel. Four scenarios were tested for PA using Pearson’s correlation coefficient (r) between the genomic estimation breeding value (GEBV) and the observed values: (1) different ratios between the training set and testing set (fold), (2) different GP models, (3) different SNP numbers in three different SNP sets, and (4) the use of GWAS-derived significant SNP markers. The results indicated a 2- to 10-fold difference in the various GP models had similar, although not identical, averaged r values in each SNP set; using GWAS-derived significant SNP markers would increase PA with a high r-value up to 0.84. The SNP markers and the high PA can provide valuable information for breeders to improve spinach by marker-assisted selection (MAS) and genomic selection (GS).

show abstract

Population Structure and Association Analysis of Bolting, Plant Height, and Leaf Erectness in Spinach

Chitwood

Shi

Mou

et al. 2016

horts

View full text Add to dashboard Cite

Spinach (Spinacia oleracea L.) is an important vegetable worldwide with high nutritional and health-promoting compounds. Bolting is an important trait to consider to grow spinach in different seasons and regions. Plant height and leaf erectness are important traits for machine harvesting. Breeding slow bolting, taller, and more erect spinach cultivars is needed for improved spinach production. A total of 288 United States Department of Agriculture (USDA) spinach accessions were used as the association panel in this research. Single-nucleotide polymorphisms (SNPs) discovered through genotyping by sequencing (GBS) were used for genotyping. Two structured populations and the admixtures were inferred for the 288 spinach accession panel using STRUCTURE and MEGA. Association mapping was conducted using single-marker regression (SMR) in QGene, and general linear model (GLM) and mixed linear model (MLM) built in TASSEL. Three SNP markers, AYZV02001321_398, AYZV02041012_1060, and AYZV02118171_95 were identified to be associated with bolting. Eight SNP markers, AYZV02014270_540, AYZV02250508_2162, AYZV02091523_19842, AYZV02141794_376, AYZV02077023_64, AYZV02210662_2532, AYZV02153224_2197, and AYZV02003975_248 were found to be associated with plant height. Four SNP markers, AYZV02188832_229, AYZV02219088_79, AYZV02030116_256, and AYZV02129827_197 were associated with erectness. These SNP markers may provide breeders with a tool in spinach molecular breeding to select spinach bolting, plant height, and erectness through marker-assisted selection (MAS).

show abstract

Screening Spinach Cultivars for White Rust Resistance and Bolting

Cited by 5 publications

References 8 publications

Management of the Tolerance to Bolting for Spinach (Spinacia Oleracea L.): Retrospect and Prospects

Management of the Tolerance to Bolting for Spinach (Spinacia Oleracea L.): Retrospect and Prospects

Genome-wide association study and genomic prediction of white rust resistance in USDA GRIN spinach germplasm

Population Structure and Association Analysis of Bolting, Plant Height, and Leaf Erectness in Spinach

Contact Info

Product

Resources

About