Direct and indirect selection for grain yield in oats (avena sativa L.)

Johnson, Steve K.; Helsel, D. B.; Frey, K. J.

doi:10.1007/bf00021449

Cited by 19 publications

(7 citation statements)

References 7 publications

(7 reference statements)

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“…Consequently, the yield of cereals can also be defined as the product of crop growth rate, crop growth duration and harvest index (TAKEDA and FREY 1976), a formula which also uses growth parameters, as with the separation of grain yield into the product of grain filling rate and grain filling duration. These growth parameters may be useful as a selection criterion as has been demonstrated by HELSEI, and SKRDLA (1983) and JOHNSON et al (1983) for vegetative growth rates in oats.…”

mentioning

confidence: 89%

“…For oats, genetic variation in vegetative growth rates were observed for different gene pools and growing conditions (e.g. TAKEDA et al 1979, JOHNSON et al 1983, GUPTA et al 1987, PELTONBN-SAINIO 1993). This variation has even been significantly increased by introducing genes from A. sterilis (TAKEDA and FREY 1977).…”

Section: Genetic Variances In Growth Parametermentioning

confidence: 99%

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Variation in Rate and Duration of Growth Among Spring Barley Cultivars¹

Léon¹,

Geisler²

1994

Plant Breeding

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Ten two-rowed spring barley cultivars {Hordeum vulgare L.) were evaluated for growth parameters, i.e. crop growth rate, crop growth duration, grain filling rate, grain filling duration, vegetative growth rate, vegetative growth duration, single caryopsis filling rate, single caryopsis filling duration. Field studies were conducted on a sandy loam at Hohenschulen. Northern Germany with three levels of nitrogen fertilization and three sowing rates in 1986 to 1988. Cultivar effects were observed for all growth parameters except for crop growth rate and vegetative growth rate. But only crop growth duration and grain filling duration showed positive correlations with grain yield. No growth rate parameter was related to yield. Biomass was correlated to crop growth duration and not to crop growth rate, while average caryopsis weight was strongly related to caryopsis filling rate and only moderately to caryopsis filling duration. Comparing grain filling rate and duration to individual caryopsis filling rate and duration, only grain filling rate and duration appeared to be relevant to grain yield. Since genetic variability for crop growth rate was lacking in the spring barley material tested, further improvement of yield would only result from increase in harvest index and/or longer crop growth duration.

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mentioning

confidence: 89%

Section: Genetic Variances In Growth Parametermentioning

confidence: 99%

Variation in Rate and Duration of Growth Among Spring Barley Cultivars¹

Léon¹,

Geisler²

1994

Plant Breeding

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“…The correlations among harvest index, grain yield and biological yield, therefore, have been investigated by many authors using very different agricultural crops. Only some selected publications on these topics shall be mentioned here: THURLING (1974), CAMPBELL and KONDRA (1978), DEGENHART andKoNDRA (1981, 1984), SERNYK and STEFANSSON (1983), JENKINS and LEITCH (1986), GROSSE (1989) with rapeseed; SINGH and STOSKOPF (1971), RosiELLE andFREY (1975 a, 1975 b), TAKIDA and FREY (1976), TAKEDA and FREY (1977), TAKEDA et al (1979), TAKEDA et al (1980), JOHNSON et al (1983) with oat; SINGH and STOSKOPE (1971), SYME (1972), NASS (1973), FISCHER and KERTESZ (1976), DONALD and HAMBLIN (1976), BHATT (1977), AUSTIN et al (1980), BLASL (1982), FEIL (1987), MALIK et al (1988) with wheat; SINGH and STOSKOPF (1971), DONALD and HAMBLIN (1976), RIGGS et al (1981aRIGGS et al ( , 1981b, BLASL (1982) with barley; BLASL (1982), RUSSELL (1985) with maize.…”

Section: Introductionmentioning

confidence: 99%

Character Associations Among Grain Yield, Biological Yield and Harvest Index

Hühn

1991

J Agronomy Crop Science

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The harvest index Z is defined, for example for cereals, as the ratio between grain yield X and biological yield Y: Z = X/Y. In this paper the character associations among biological yield, grain yield and harvest index have been investigated theoretically by calculating the covariances and correlation coefficients between harvest index and grain yield and, additionally, between harvest index and biological yield. Explicit formulae are derived for these covariances and correlation coefficients and conclusions are derived and discussed. Many facts and relations among these characters which are well‐known and frequently established by many experimental studies with quite different crops can be obtained and characterized by these theoretical investigations as necessary implications of the underlying statistical relationships. Finally, all the theoretical studies and results are demonstrated and applied to a numerical example of winter‐rapeseed data.

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“…For example, sib families. Seven commercial oat cultivars were included in Johnson et al (1983) compared direct selection for ineach set in duplicate. Each set also included five of the original creasing grain yield to indirect selection using vegetative parental lines, which were assigned to sets at random, and the growth rate on F 2 -derived oat lines.…”

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confidence: 99%

Correlated Responses to Selection for Greater β-Glucan Content in Two Oat Populations

et al. 2002

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Oat (Avena sativa L.) β-glucan lowers serum cholesterol in humans. Thus, enhancing its content in oat cultivars for human consumption is desirable. Phenotypic selection for greater β-glucan content was effective in two broad-based oat populations, BG1 and BG2. The initial and selected cycles of each of these populations were evaluated in 1996 and 1997 at two Iowa locations to determine the correlated responses of agronomic and grain quality traits to selection for greater β-glucan content. Correlated responses were generally unfavorable for agronomic performance, but favorable in terms of human nutritional value of oat grain. Mean protein content increased by 5% in one population while mean oil content and heading date did not change. Mean grain yield, biomass, and test weight were reduced by 25, 23, and 2%, respectively, in one population and not affected in the other. Plant height decreased by 5% in one population only. Genotypic variances were unchanged by selection, except the genetic variance for plant height in BG2 increased. Selection strengthened negative genotypic correlations between β-glucan content and grain yield, biomass, and oil content in both populations, and between β-glucan content and test weight, heading date, and height in one population. β-Glucan yield (the product of β-glucan content and grain yield) was positively genotypically correlated with both grain yield (r = 0.92 in both populations) and β-glucan content (r = 0.66 and r = 0.26 in the two populations). Selection for greater β-glucan yield could be used to improve β-glucan content and grain yield simultaneously. RightsWorks produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted. The potential association of oat ␤-glucan content with 25, 23, and 2%, respectively, in one population and not affected in the other. Plant height decreased by 5% in one population only.agronomic characteristics and other grain quality traits date and maturity were delayed. Schipper and Frey (1992) found that five cycles of recurrent selection for greater groat oil content in oat did not affect groat protein content, but four cycles of recurrent selection

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Direct and indirect selection for grain yield in oats (avena sativa L.)

Cited by 19 publications

References 7 publications

Variation in Rate and Duration of Growth Among Spring Barley Cultivars¹

Variation in Rate and Duration of Growth Among Spring Barley Cultivars¹

Character Associations Among Grain Yield, Biological Yield and Harvest Index

Correlated Responses to Selection for Greater β-Glucan Content in Two Oat Populations

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Direct and indirect selection for grain yield in oats (avena sativa L.)

Cited by 19 publications

References 7 publications

Variation in Rate and Duration of Growth Among Spring Barley Cultivars1

Variation in Rate and Duration of Growth Among Spring Barley Cultivars1

Character Associations Among Grain Yield, Biological Yield and Harvest Index

Correlated Responses to Selection for Greater β-Glucan Content in Two Oat Populations

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Variation in Rate and Duration of Growth Among Spring Barley Cultivars¹

Variation in Rate and Duration of Growth Among Spring Barley Cultivars¹