Environmental and genetic variation for protein content in winter wheat (Triticum aestivum L.)

(1984)(1985)(1986)(1987)(1988) and at Regina and Scou (1985)(1986)(1987)(1988). Although significant seeding date x cultivar interactions occurred for several of the characteristics measured (e.g. , yield, protein concentration), no cultivar consistently responded differently than the others. However, the difference in days to reach maturity between the Iater maturing CPS cultivars and the CWRS cultivar, Neepawa, generally increased with delayed seeding mzrking the CPS cultivars more susceptible to early fall frost damage which could decrease their yields and grain quality. Our results showed no reason to change recommendations for seeding dates in either soil zone, and both types ofwheat can be treated similarly except that late seeding for CPS wheats should be avoided.

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“…For personal use only. (Kramer 1979;Terman 1979). Between cultivars, Kramer (1979) found the correlation to be strongly negative.…”

mentioning

confidence: 91%

Development and Yield of Canadian Western Red Spring and Canada Prairie Spring Wheats as Affected by Delayed Seeding in the Brown and Dark Brown Soil Zones of Saskatchewan

Cutforth¹,

Campbell²,

Judiesch³

et al. 1990

Can. J. Plant Sci.

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Section: Introductionmentioning

confidence: 99%

“…According to Kramer (1979), the well known negative correlation between grain yield and GNC in wheat can be overcome by avoiding onesided breeding for higher harvest indices. According to Kramer (1979), the last mentioned point could be responsible for the well documented negative correlation between grain yield and GNC in wheat (Kibite and Evans, 1984;Paccaud et al, 1985). Comparisons between old and modern wheat varieties have revealed that up to now, increases in yield are based almost exclusively on an improvement of the harvest index (Austin et al, 1980(Austin et al, , 1989Feil and Geisler, 1988).…”

Section: Introductionmentioning

confidence: 99%

Genotype variation in grain nutrient concentration in tropical maize grown during a rainy and a dry seaon

Feil

Thiraporn²,

Geisler³

et al. 1990

Agronomie

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“…When biomass differences between plots are not the result of differences in competitive ability, but of the genetical make-up oflines this correction method fails. However, there are indications that differences in biomass yield of genetical origin are relatively unimportant (SYME, 1970;AGUILAR & FISCHER, 1975;DONALD & HAMBLIN, 1976;JAIN & KUHLSHRESTHA, 1976;KRAMER, 1979).…”

Section: Selection For Wheat Yield Materials and Methodsmentioning

confidence: 99%

Selection for yield in small plots of spring wheat

1982

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SUMMARYFour selection experiments were sown: single-row plots with single row-spacing (:::: 20 em), single-row plots with double row spacing (:::: 40 em), three-row plots and six-row plots both with single row-spacing (:::: 20 em). Selection entries were mimiced by 16 different varieties or advanced breeding lines, which were also sown in a yield trial. Each experiment was laid out as a 4-times replicated randomized block design. Row length was 2 m. Alley borders and border-rows of multiple-row plots were harvested separately to evaluate the effects of different harvesting procedures on the selection efficiency. Removal of alley borders was found to be disadvantageous, since the gain in precision was more than offset by the loss in sampled area. Wide spacing of single-row plots improved the selection efficiency in comparison with normal spaced single-row plots. In multiple-row plots the selection efficiency was not improved by harvesting only the central rows.For gross plot yield ( = yield of net plot + yield of alley borders) the differences in selection efficiency between the various selection plot-types were explained on the basis of the genetic variance, the environmental variance and the coefficient of genetic correlation with 'farm' yield as determined in the yield trial.

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Environmental and genetic variation for protein content in winter wheat (Triticum aestivum L.)

Cited by 126 publications

References 17 publications

Development and Yield of Canadian Western Red Spring and Canada Prairie Spring Wheats as Affected by Delayed Seeding in the Brown and Dark Brown Soil Zones of Saskatchewan

Development and Yield of Canadian Western Red Spring and Canada Prairie Spring Wheats as Affected by Delayed Seeding in the Brown and Dark Brown Soil Zones of Saskatchewan

Genotype variation in grain nutrient concentration in tropical maize grown during a rainy and a dry seaon

Selection for yield in small plots of spring wheat

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