Correlated response to recurrent selection for groat-oil content in oats

Branson, C. V.; Frey, K. J.

doi:10.1007/bf00037892

Cited by 18 publications

(7 citation statements)

References 20 publications

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“…One of the main conclusions from Table 6 is that oil content in oats is weakly correlated with other characters. This is in good correspondence with the findings of e.g., Branson & Frey (1989a) and Gullord (1980). The high negative genetic correlations between protein content and other agronomic characters, especially grain yield, also agree with previously published results (cf.…”

Section: Rmiges Cnid Lirritabiliriessupporting

confidence: 92%

The Potential of High-Oil Oats under Cool Temperate Conditions

Bj⊘rnstad¹,

Aastveit

Thoresen

1994

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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Section: Rmiges Cnid Lirritabiliriessupporting

confidence: 92%

The Potential of High-Oil Oats under Cool Temperate Conditions

Bj⊘rnstad¹,

Aastveit

Thoresen

1994

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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“…Similar results were obtained by Branson and Frey (1989) for harvest index and Schipper and Frey (1991) for biological yield.…”

Section: The Associations Among Quantitative Characterssupporting

confidence: 85%

“…A remarkable point here is that grain yield was significantly and positively associated with groat oil content in two populations, Thi's agrees with Brown et al, (1966), Gullord (1980), and Branson and Frey (1989).…”

Section: The Associations Among Quantitative Characterssupporting

confidence: 74%

Relationships Among Some Quantitative Traits and Heritablities İn Cultivated Oats (Avena sativa L.)

Halil;VALENTINE¹

1996

Tarım Bilimleri Dergisi

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Abstract:The objectives of this study were to examine the relationships among quantitative traits and to estimate their broad sense heritabilities in cultivated oats (Avena sativa L.). Four oat crosses were used in this experiment.Biological yield had the highest correlation with grain yield in all F2 populations, followed by harvest index. Grains per panicle appeared to be the most useful trait to use in indirect selection for grain yield among yield components in terms of heritability values and correlations with grain yield. Grain yield per plant significantly and positively associated with groat oil content in two oat populations.The broad sense heritability values of groat oil content ranged from 13 to 77%. Grain yield per piânt had heritability estimates between tow and moderate values.• Key words: Broad sense heritability, correlation, oats (Avena sativa L.), quantitative trait.. Bütün F2 populasyonlar ı nda biyolojik verim, dane verimi ile en yüksek korelasyona sahip olmu ştur, onu hasat indeks izlemiştir. Kal ı t ı m derecesi ve dane verimi ile olan korelasyon de ğerleri göz önünde bulunduruldu ğ unda; salkımda dane say ıs ın ı n, verim komponentleri aras ı nda, indirekt seleksiyonda kullanma aç ı s ı ndan en uygun karakter 'obbitece ği görülmüştür. Dane verimi iki yulaf populasyonunda, dane ya ğ oran ı ile önemli ve pozitif ili şkiye sahip olmu ştur.• Dane ya ğ oran ı için tesbit edilen geni ş anlamda kal ıtı m derecesi %13 ve %77 aras ı nda değişim göstermiştir. Dane verimi ise dü ş ük ve orta aras ı nda kal ı t ı m derecesi de ğ erleri alm ışt ı r. Özet: Bu çal ışman ı n amac ı , kültürü yap ı lan yulaflarda kantitatif karakterler aras ı ndaki ili şkileri, ,: ıncelernek ve karakterlerin geni ş anlamda kal ı t ı m derecelerini belirlemektir. Ara şt ırmada dört yulaf melezinden elde edilen F2 populasyonlar ı kullan ı lm ıştı r.

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“…It is not clear why this decrease in productivity occurred in C7, but grain yield increased significantly after C7, in contrast to the general trend. Branson and Frey (1989a) reported no significant changes in grain yield for the first three cycles of selection, while Schipper and Frey (1992) reported a mean decrease equivalent to 0.8% of the base‐population mean for the first six cycles of selection. Oil yield increased steadily with each successive cycle of selection, except that the C7 population mean was less than the C6 population mean (Table 1), due to the decrease in grain yield.…”

Section: Resultsmentioning

confidence: 99%

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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Correlated response to recurrent selection for groat-oil content in oats

Cited by 18 publications

References 20 publications

The Potential of High-Oil Oats under Cool Temperate Conditions

The Potential of High-Oil Oats under Cool Temperate Conditions

Relationships Among Some Quantitative Traits and Heritablities İn Cultivated Oats (Avena sativa L.)

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

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