Use of SSR Markers to Increase Forage Yield in Timoty (Phleum pratense L.)

Tanaka, Tsuneki; Tamaki, Hiroyuki; Ashikaga, Kazunori; Fujii, Hiromitsu; Tamura, Kenichi; Yamada, Toshihiko

doi:10.1007/978-3-319-08714-6_12

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…Yield superiority of HMD group progeny over the LMD group progeny (69.60%) and control (48.10%) at drought stress conditions is a promising indication deserving close attention in the breeding programmes. The presence of significantly increased forage yield in Syn1 progeny from parents selected for HMD is in agreement to findings in perennial ryegrass, tall fescue and timothy (Amini et al, ; Ghesquiere et al, ; Kolliker et al, ; Tanaka et al, , ). Since yield stability is one of the main breeding objectives in breeding for stress environments (Einfeldt, Ceccarelli, Grando, Gland‐Zwerger, & Geiger, ), higher values of STI and YSI in HMD group progeny compare to LMD group progeny and the control is quite remarkable and implies that HMD group progeny had greater buffering capacity against reduction in yield under drought stress.…”

Section: Discussionsupporting

confidence: 87%

“…Studies of phenotypic and molecular diversity in relation to hybrid performance have been undertaken in several forage grasses. Investigations in timothy, perennial ryegrass and tall fescue have shown that the genetic diversity of parents captured by molecular markers, was significantly correlated with hybrid performance (Amini, Mirlohi, & Majidi, 2016;Amini, Mirlohi, Majidi, Shojaieefar, & Kollilker, 2011;Ghesquiere, Muylle, & Baert, 2013;Kolliker, Boller, & Widmer, 2005;Liu, 2015;Tanaka et al, 2015;Tanaka, Tamaki, Ashikaga, Fujii, & Yamada, 2013).…”

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Genotype selection for physiological responses of drought tolerance using molecular markers in polycross hybrids of orchardgrass

2019

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The present study aimed to assess the effect of contrasting levels of molecular and phenotypic diversity among polycross parents of orchardgrass on the performance of synthetic progeny with respect to physiological responses and drought tolerance. Four polycross groups each composed of six parental plants were evaluated under normal irrigation and drought stress conditions. A number of 923 inter simple sequence repeats and sequence related amplified polymorphism markers and several phenotypic traits were used to select contrasting levels of diversity (high and low) in parental genotypes. Highly significant correlation was observed between molecular distance and progeny performances at both normal irrigation and drought stress conditions. High molecular diversity among polycross parents led to a significant yield advantage of first generation progeny with averages of 34.40% for normal irrigation and 48.10% for drought stress conditions. Also crosses between genetically distant parents produced progeny with considerable drought tolerance and yield stability. Positive associations between phenotypic distance of parents and progeny performance were found for most physiological traits at both moisture regimes but phenotypic distances had weak association with forage yield, stress tolerance index and yield stability of progeny. Significant associations between drought tolerance index and some physiological traits confirmed the importance of these traits in conferring drought tolerance of orchardgrass. Our results underscore the effectiveness of marker‐assisted polycross breeding to improve drought tolerance and yield stability through physiological traits in orchardgrass.

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Section: Discussionsupporting

confidence: 87%

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confidence: 99%

Genotype selection for physiological responses of drought tolerance using molecular markers in polycross hybrids of orchardgrass

2019

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“…Studies on important timothy breeding target traits such as forage yield (FY), lodging resistance (LR), competitiveness toward legumes (COM), seed yield, and nutritive values (NVs) including water‐soluble carbohydrates (WSC), low‐digestible fiber (Ob), and organic cell wall (OCW) content have elucidated genetic variation, heritability, genetic correlations, and genotype × environment interactions. Feasible selection procedures have been developed in polycross breeding for improvement of the target traits (Tamaki et al, 2002a, 2002b, 2004; Ashikaga et al, 2008, 2009, 2010, 2011, 2012; Tanaka et al, 2015). However, there are no reports on the paternity of plants selected by phenotypic selection in polycross breeding.…”

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Marker‐Based Paternity Test in Polycross Breeding of Timothy

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Grasses seed storage under genbank conditions

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Herasimov

Shyianova

2018

Genet. resur. rosl.

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The seed viability of 86 acessions of fodder grasses: awnless brome (Bromopsis inermis (Leyss.) Holub.), orchardgrass (Dactylis glomerata L.), Timothy grass (Phleum pretense L.), crested wheat grass (Agropyron cristatum (L.) Gaertn.), clustered wheat grass (Agropyron desertorum (Fisch. ex Link) Schult. et Scult.f.), annual ryegrass (Lolium multiflorum Lam.), perennial ryegrass (L. perenne L.), red fescue (Festuca rubra L.), meadow fescue (Festuca pratensis Huds.), gigantea fescue (Festuca gigantea (L.) Vill.), blue fescue (Festuca inarmata Schur. (Festuca amethystina (Hack. ex Boiss.) St.-Yves)), tall fescue (Festuca arundinacea Schreb.), tall oat-grass (Arrhenatherum elatius (L.) P. Beauv. ex J. S. et K. B. Presl.), slender wheat grass (Roеgneria trachycaulon (Link) Nevski), creeping bent grass (Agrostis alba L.), redtop (Agrostis gigantea Roth.), which were stored under controlled temperature and moisture content 3 – 6 % was investigated. It has been determined that the seeds of these species have different longevity at different storage temperatures under the genebank conditions. Phleum pretense, Phleum pretense, Agropyron cristatum, Lolium multiflorum Festuca rubra seed viability was without changing after storage at temperature 4oC for 10 years and longer. The best seed longevity of grasses were achieved when the seeds are kept at –20oC. Accessions features of different grasses species seed storage are discussed.

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Use of SSR Markers to Increase Forage Yield in Timoty (Phleum pratense L.)

Cited by 4 publications

References 23 publications

Genotype selection for physiological responses of drought tolerance using molecular markers in polycross hybrids of orchardgrass

Genotype selection for physiological responses of drought tolerance using molecular markers in polycross hybrids of orchardgrass

Marker‐Based Paternity Test in Polycross Breeding of Timothy

Grasses seed storage under genbank conditions

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