Responses in Agronomic Traits Associated with Three Recurrent Selection Regimes for Groat‐Oil Content in Oat*

Schipper, H.; Frey, K. J.

doi:10.1111/j.1439-0523.1992.tb00135.x

Cited by 9 publications

(10 citation statements)

References 17 publications

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“…High concentrations of TL and proteins were found in low‐yielding samples, which also had low TKW, in agreement with previous findings 14. 26 Further, samples with high concentrations of TL had a high percentage of 18:1, a low percentage of 18:2 and a high concentration of TTT(DM) (mainly due to T3), also in agreement with previous studies 14. 27, 28 Groat extracts with high concentrations of TL also had high TAC.…”

Section: Resultssupporting

confidence: 92%

Lipids and antioxidants in groats and hulls of Swedish oats (Avena sativa L)

Bryngelsson

Mannerstedt-Fogelfors

Kamal‐Eldin

et al. 2002

J Sci Food Agric

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Concentrations and compositions of total lipids (TL), fatty acids, tocopherols and tocotrienols, avenanthramides and free hydroxycinnamic acids were determined in groats and hulls from single samples of seven Swedish oat cultivars. Total antioxidant capacity (TAC) was measured using the radical 1,1-diphenyl-2-picrylhydrazyl as substrate. Results were evaluated by principal component analysis. Consistent differences in value of the variables analysed in groats and hulls were found, groats having higher concentrations of all compounds analysed except free cinnamic acids. Concentrations of Evitamers (especially tocotrienols) were high in both groat and hull samples with high TL. Avenanthramides were high in hull samples with high TL, but this was not found in groats. Free cinnamic acids did not follow TL in either groats or hulls. TAC was generally higher in groats than in hulls. The within-group variation in TAC was less pronounced than that in chemical composition, especially in groats. The results did not suggest any strong relationship between TAC and individual antioxidants.

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Section: Resultssupporting

confidence: 92%

Lipids and antioxidants in groats and hulls of Swedish oats (Avena sativa L)

Bryngelsson

Mannerstedt-Fogelfors

Kamal‐Eldin

et al. 2002

J Sci Food Agric

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“…Branson and Frey (1989b) developed a population from crosses among cultivated and wild oat germplasm with higher levels of groat‐oil content. Three cycles of recurrent selection for increased groat‐oil content in this population resulted in significantly elevated mean groat‐oil content in the third cycle population (Branson and Frey, 1989b) Three further cycles of recurrent selection resulted in continued gains in groat‐oil content, achieved at a reasonably constant, linear rate (Schipper and Frey, 1991b) Significant genetic variation for groat‐oil content remained in the Cycle 6 population, suggesting that continued gains in groat‐oil content could be achieved in this population. Also, long‐term recurrent selection for increased seed oil content has been successful in maize ( Zea mays L.) (Dudley, 1977; Misevic and Alexander, 1989).…”

mentioning

confidence: 90%

“…Groat‐oil content in oat is quantitatively inherited (Frey et al, 1975) Gene action for groat‐oil content includes additive and nonadditive effects (Brown et al, 1974), although additive gene action predominates (Thro and Frey, 1985) Consistently high estimates of heritability of oil content in oats have been reported, and range from 0.50 to 0.93 (Baker and McKenzie, 1972; Branson and Frey, 1989b; Brown et al, 1974; Schipper and Frey, 1991b). Genotype × environment interaction for groat‐oil content is not a major component of its phenotypic variance (Branson and Frey, 1989b; Gullord, 1986; Thro and Frey, 1985).…”

mentioning

confidence: 99%

“…Also, long‐term recurrent selection for increased seed oil content has been successful in maize ( Zea mays L.) (Dudley, 1977; Misevic and Alexander, 1989). The biological upper limit for groat‐oil content in oat is not known; oat lines developed from six cycles of recurrent selection contained the highest levels of groat‐oil content ever reported in the genus Avena , 162.9 g kg −1 (Schipper and Frey, 1991b)…”

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Nine Cycles of Recurrent Selection for Increased Groat‐Oil Content in Oat

Frey

Holland

1999

Crop Science

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and range from 0.50 to 0.93 (Baker and McKenzie, 1972; Branson and Frey, 1989b;Brown et al., 1974; Increases in the groat (caryopsis)-oil content of oat (Avena sativa and Frey, 1991b). Genotype ϫ environment interaction L.) raise the energy value of oat grain. Nine cycles of recurrent phenotypic selection for high groat-oil content were conducted in a geneti-for groat-oil content is not a major component of its cally broad-based oat population that included germplasm from the phenotypic variance (Branson and Frey, 1989b; Gullord, wild relative A. sterilis L. Our objectives in this experiment were to 1986;Thro and Frey, 1985). Genotypic variation for determine if selection for high groat-oil content was effective and if groat-oil content has been observed among adapted culselection reduced genetic variation for oil content; to identify agrotivars (Brown and Craddock, 1972) and among wild nomically acceptable lines with high groat-oil content; and to docurelatives, including the progenitor species, A. sterilis ment the indirect effects of selection on grain yield, groat fraction, (Frey and Hammond, 1975;Martens et al., 1979). Aland oil yield. We evaluated 100 random lines from the base (C0) though the groat-oil content of wild Avena species does population and each of the nine selection cycle populations in three not exceed the levels found in domesticated oat (Rezai, (1985) reported that alleles for cycles of selection at a rate of 6.6 g kg Ϫ1 cycle Ϫ1 (equivalent to 6.7% of C0 population mean cycle Ϫ1 ) from a mean of 98.2 g kg Ϫ1 in C0 to higher oil content from A. sativa and A. sterilis are 158.5 g kg Ϫ1 in C9. The rate of gain from selection did not decrease complementary. Thus, by combining alleles for higher in later cycles. Oil yield increased at a rate equivalent to 1.9% of C0 oil content from the two species, development of oat population mean cycle Ϫ1 , while mean groat fraction did not change genotypes with higher groat-oil contents than any preand mean grain yield decreased at a rate equivalent to 3.2% of C0 viously reported in either species was facilitated (Thro population mean cycle Ϫ1 . For all traits, genetic variation did not deand Frey, 1985). environments. Mean groat-oil content increased linearly during nine 1977), Thro and Frey crease during selection cycles. Selected S 0 -derived lines from the popu-The abundance of genetic variation for oil content in lation with groat-oil contents Ͼ1 5 0gk g Ϫ1 exhibited lower yield, cultivated oat and interfertile wild hexaploid oat and greater lodging, and greater disease susceptibility compared with the the higher heritability of the trait permit relatively rapid best check cultivar.

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“…Similarly, Schipper and Frey (1992) observed significant declines in grain yield due to six cycles of recurrent selection for groat-oil content in oat. Significant declines in biomass were associated with the decline in grain yield, but harvest index remained unchanged.…”

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Recurrent selection for protein yield in oat

Moser

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Responses in Agronomic Traits Associated with Three Recurrent Selection Regimes for Groat‐Oil Content in Oat*

Cited by 9 publications

References 17 publications

Lipids and antioxidants in groats and hulls of Swedish oats (Avena sativa L)

Lipids and antioxidants in groats and hulls of Swedish oats (Avena sativa L)

Nine Cycles of Recurrent Selection for Increased Groat‐Oil Content in Oat

Recurrent selection for protein yield in oat

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