Genetic parameters and selection in full-sib families of tall fescue using best linear unbiased prediction (BLUP) analysis

Pirnajmedin, Fatemeh; Majidi, Mohammad Mahdi; Taleb, Mohammad Hadi; Rostami, Davoud

doi:10.1186/s12870-022-03675-w

Cited by 3 publications

(1 citation statement)

References 46 publications

(69 reference statements)

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“…HD in cool‐season forage grasses is highly heritable (Araujo & Coulman et al., 2002; Majidi et al., 2015; Pirnajmedin et al., 2022). In orchardgrass, tremendous variation in HD has been reported (Zhao et al., 2017), and heritabilities have ranged from h 2 = 0.51 to h 2 = 0.89 (Jafari & Naseri, 2007; Majidi et al., 2015).…”

Section: Introductionmentioning

confidence: 99%

Late‐heading parental selection in orchardgrass (Dactylis glomerata L.)

Getz,

Robbins,

Thorsted

et al. 2024

Crop Science

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Dactylis glomerata L., orchardgrass or cocksfoot, is frequently planted as a companion crop in perennial forage legumes such as alfalfa (Medicago sativa L.). However, many commercial orchardgrass cultivars flower earlier than legumes, resulting in a reduction in grass yield and nutritional value if harvested to maximize the legume. Additionally, during orchardgrass seed production over years, later flowering can gradually shift to earlier flowering. In this study, we employed parental selection based on half‐sib family (HS‐family) trait values for dry matter yield (DMY) and heading date (HD), and augmented it with marker‐assisted selection to enrich for late‐heading‐associated alleles in six vernalization and flowering time candidate genes. The parent population resulted from polycrossing three late‐heading orchardgrass germplasm sources and evaluating 94 HS‐families. HDs differed by years and locations for both the parent and HS‐family populations. Of the 313 single‐nucleotide polymorphisms (SNPs) identified within the candidate genes, 16 were associated with HD with a range of effects from 0.48 to 3.37 days to heading. An SNP detected across multiple years and locations in this study was also found in a previous study, within the intron of the Constans 1 gene (DgCO1). DMY was not highly significant in this study, highlighting a large environmental effect alongside lower variation across the HS‐families. However, parental plants fixed for the SNP within DgCO1 showed a trend to later heading as well as higher DMY.

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Section: Introductionmentioning

confidence: 99%

Late‐heading parental selection in orchardgrass (Dactylis glomerata L.)

Getz,

Robbins,

Thorsted

et al. 2024

Crop Science

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Simple recurrent selection-mediated improvement in quantitative traits of white onion

Mahajan,

Bhandari,

Singh

et al. 2024

Vegetos

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Transcriptome Analysis Revealed the Paternal Importance to Vegetative Growth Heterosis in Populus

Ren,

Wu,

Zhong

et al. 2024

Plants

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Parental selection is important for heterosis formation during crossbreeding of Populus. However, in poplar hybrids, the effect of parents on vegetative growth heterosis is not well understood. In this study, one female parent (P. simonii XY4) and two male parents (P. nigra OH and P. deltoides × P. nigra BJLY3#) were used to produce two progenies (Hyb1 and Hyb2). Vegetative growth investigation showed that both Hyb1 and Hyb2 performed heterosis in plant growth and ground diameter. The vegetative growth of hybrids was strongly correlated with the male parents but not with the female parents. The gene expression levels in the hybrids were more biased toward the male parents. In Hyb1 and Hyb2, 51.93% and 45.03% of the expressed genes showed the non-additive effect, respectively, and over 65% of the non-additively expressed genes showed the dominant effect. It is noteworthy that genes of paternal expression dominant effect (ELD_♂) account for the majority of dominantly expressed genes, suggesting the paternal contribution to heterosis. KEGG enrichment analysis indicated that a large number of non-additively expressed genes were enriched in the plant hormone signal transduction pathway. WGCNA analysis showed that MEcyan was significantly correlated with the traits of hybrids, and 12 plant hormone signal transduction pathway genes were enriched in this module. Transcription factors (TFs) MYB88, LHY, and TCP4 may be involved in the regulation of these pathway genes. This finding supported that the male parents play an important role in the formation of vegetative growth heterosis of Populus. In addition, the non-additively expressed genes of the signal transduction pathway and the regulation of TFs related to these pathway genes may be one of the reasons for the generation of heterosis.

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Genetic parameters and selection in full-sib families of tall fescue using best linear unbiased prediction (BLUP) analysis

Cited by 3 publications

References 46 publications

Late‐heading parental selection in orchardgrass (Dactylis glomerata L.)

Late‐heading parental selection in orchardgrass (Dactylis glomerata L.)

Simple recurrent selection-mediated improvement in quantitative traits of white onion

Transcriptome Analysis Revealed the Paternal Importance to Vegetative Growth Heterosis in Populus

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