Genetic characterisation of seed yield and fertility traits in perennial ryegrass (Lolium perenne L.)

Studer, Bruno; Jensen, Louise Bach; Hentrup, Stephan; Brazauskas, Gintaras; Kölliker, Roland; Lübberstedt, Thomas

doi:10.1007/s00122-008-0819-y

Cited by 66 publications

(71 citation statements)

References 38 publications

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“…This is comparable to 28.1% of the explained variance as observed in our study. For plant height, six QTLs were reported for perennial ryegrass, and five QTLs were reported for switchgrass (Panicum virgatum), explaining 27.9 and 17.4% of phenotypic variation, respectively, which is consistent with the 28.6% found in the present study (Studer et al, 2008;Serba et al, 2015). For plant vigor in alfalfa, four QTLs were detected, explaining up to 23.3% of the phenotypic variance, which is close to the 23.9% found in the present study (McCord et al, 2014).…”

Section: Accuracy Of Tam To Infer the Presence Of Qtls In Sainfoin Posupporting

confidence: 91%

“…For seed yield, three QTLs were detected in red clover and two in perennial ryegrass, explaining a maximum 15.3 and 32.8% phenotypic trait variation, respectively (Herrmann et al, 2006;Studer et al, 2008). This is comparable to 28.1% of the explained variance as observed in our study.…”

Section: Accuracy Of Tam To Infer the Presence Of Qtls In Sainfoin Posupporting

confidence: 88%

“…However, patterns of correlations among markers or marker alleles might provide an indication of the assignment of TAMs to potential QTL. For example, in perennial ryegrass (Lolium perenne), highly correlated markers (r = 0.95) linked to seed yield were found to be associated with the same QTL (Studer et al, 2008). In our study, the two clusters of correlated TAMs suggested the existence of two different potential QTL regions for vigor-related traits, with five and eight associated TAMs, respectively ( Figure 6).…”

Section: Accuracy Of Tam To Infer the Presence Of Qtls In Sainfoin Posupporting

confidence: 50%

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Marker-trait association analysis for agronomic and compositional traits in sainfoin (Onobrychis viciifolia)

Kempf¹,

Malisch²,

Grieder³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. Sainfoin (Onobrychis viciifolia) is a perennial forage legume with great potential for use in sustainable agriculture due to its low input requirements, good drought tolerance, and production of forage rich in polyphenolic compounds, which are beneficial for animal health. However, its distribution and cultivation are limited due to its moderate agronomic performance and a general lack of well adapted, highly yielding cultivars. Faster progress in breeding is imperative, but is often hampered by the complex inheritance of traits and limited knowledge on the genetic composition of this tetraploid, outbreeding species. Molecular genetic tools might aid phenotypic selection; however, to date no information on marker-trait associations is available for sainfoin. Hence, the goal of the present study was to detect marker- trait associations in a biparental F 1 population. Single plants were screened for recently developed genetic markers and phenotyped for important agronomic traits and concentrations of different polyphenolic compounds. Significant trait-associated markers (TAM) were detected for plant height (11), plant vigor (1), and seed yield (7). These three traits were positively correlated with each other and shared some TAMs. Correlations among markers suggested that two independent loci control these three vigor-related traits. One additional, independent TAM was detected for the share of prodelphinidins in total condensed tannins. Our results provide insight into the genetic control of important traits of sainfoin, and the TAMs reported here could assist selection in combination with phenotypic assessment.

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Section: Accuracy Of Tam To Infer the Presence Of Qtls In Sainfoin Posupporting

confidence: 91%

Section: Accuracy Of Tam To Infer the Presence Of Qtls In Sainfoin Posupporting

confidence: 88%

Section: Accuracy Of Tam To Infer the Presence Of Qtls In Sainfoin Posupporting

confidence: 50%

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Marker-trait association analysis for agronomic and compositional traits in sainfoin (Onobrychis viciifolia)

Kempf¹,

Malisch²,

Grieder³

et al. 2017

Genet. Mol. Res.

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“…The AFLP markers are suitable for genome wide scanning; however, their use for targeting specific traits can be difficult as only a small percentage of them are expected to be close to particular genes; therefore the low number of markers used in this analysis reduced the chance to hit the sites of particular interest. The need for dense genetic linkage maps was noted in a range of previous studies, characterizing disease resistance traits (Brazauskas et al, 2013), vernalization response (Jensen et al, 2005), evaluating seed yield and fertility traits (Studer et al, 2008) and localizing the genes involved in a water stress response (Jonavičienė et al, 2012). Nevertheless, a number of fragments were prevalent among drought tolerant and drought susceptible genotypes.…”

Section: Discussionmentioning

confidence: 99%

Genetic and phenotypic diversity for drought tolerance in perennial ryegrass (Lolium perenne L.)

Jonavičienė

Statkevičiūtė

Kemešytė

et al. 2014

Zemdirbyste-Agriculture

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Perennial ryegrass (Lolium perenne L.) is a widely grown species in temperate regions as forage grass as well as for recreational and bioenergy production purposes. Information on perennial ryegrass genetic background facilitates breeding programs by providing an assessment of genetic diversity in exotic material. Genetic diversity of 104 genotypes of perennial ryegrass was evaluated using phenotypic drought traits and amplified fragment length polymorphism (AFLP) data. A high variation was observed for the drought tolerance traits. Chlorophyll fluorescence (F v /F m ) explained 88.8% of the whole variation observed in the collection, while re-growth accounted for 9.1% of all variation. A principal component analysis on the basis of phenotypic drought tolerance traits classified perennial ryegrass collection into three clusters. Three AFLP primer pairs produced a total of 210 fragments, 202 of which were polymorphic among all accessions. The genetic diversity of the collection was high with an average similarity coefficient of 0.46 and the average polymorphic information content of 0.29. The principal component analysis based on AFLP data did not cluster genotypes into any major group. A total of six AFLP fragments, identified as being prevalent in drought tolerant genotypes, together with the high degree of genetic homogeneity found, could provide a choice of selecting genotypes from this perennial ryegrass collection for a drought tolerance breeding program.

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“…There was no attempt to select lawn varieties from this species, which could be used in unfavourable lighting conditions. The results obtained by Studer et al (2008) showed that there was wide diversity within variety of perennial ryegrass in terms of response to habitat conditions.…”

Section: Introductionmentioning

confidence: 96%

SChlorophyll a fluorescence of perennial ryegrass (Lolium perenne L.) varieties under long term exposure to shade

Dąbrowski

Pawluśkiewicz

Baczewska

et al. 2015

Zemdirbyste-Agriculture

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The perennial ryegrass is the species widely used in Europe as forage as well as for creating lawns in urban areas. Unfavourable light conditions in cities are the principal reason of improper growth and functioning of grass communities. The aim of our work was to answer the following questions: what is the adaptive ability of photosynthetic apparatus of perennial ryegrass varieties to long-term reduction of solar radiation and which of the tested varieties has the best properties to be used for grassland establishment under reduced light conditions. A two-factor experiment was conducted with three varieties and three shading variants. Measurements of chlorophyll a fluorescence were provided, and the basic assessed parameters were: minimal fluorescence (F 0 ), maximal fluorescence (F m ), variable fluorescence (F v ) and maximal photosynthetic efficiency of photosystem II (F v /F m ). Gas exchange was also measured. We explored the differences between the selected varieties in terms of their photosynthetic apparatus adaptation to light conditions. During May, all varieties were characterized by increase in minimal and maximal fluorescence levels under reduced light. The most significant changes were noticed for variety 'Taya'. During following months, a trend of decline in photosynthetic efficiency was observed for this variety. For this variety the most significant changes of CO 2 were also noted. The stomatal conductance was not affected by shading. On the basis of our results, we have assumed that each variety is unique in terms of threshold values and demand for light.

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Genetic characterisation of seed yield and fertility traits in perennial ryegrass (Lolium perenne L.)

Cited by 66 publications

References 38 publications

Marker-trait association analysis for agronomic and compositional traits in sainfoin (Onobrychis viciifolia)

Marker-trait association analysis for agronomic and compositional traits in sainfoin (Onobrychis viciifolia)

Genetic and phenotypic diversity for drought tolerance in perennial ryegrass (Lolium perenne L.)

SChlorophyll a fluorescence of perennial ryegrass (Lolium perenne L.) varieties under long term exposure to shade

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