HETEROSIS IN F<sub>1</sub> HYBRIDS BETWEEN SPRING AND WINTER WHEATS

Grant, M. N.; McKenzie, Hugh

doi:10.4141/cjps70-026

Cited by 10 publications

(10 citation statements)

References 5 publications

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“…Watson, Thorne and French (1963) observed a 40 to 70% yield superiority of winter over spring wheat. However, Grant and McKenzie (1970) re• ported Ft spring wheat yields 40% higher than the spring wheat parent from combinations between spring and winter wheats. Pinthus (1967a, l967b) con• eluded that winter wheat could contribute to a yield increase of spring wheat selected from such crosses.…”

Section: --------------------mentioning

confidence: 95%

Comparison of Spring Wheat and Barley with Winter Wheat: Yield Components in Ontario¹

Stoskopf¹,

Nathaniel²,

Reinbergs

1974

Agronomy Journal

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Studies were conducted to evaluate the reportedly high yielding Mexican and European spring wheat (Triticum aestivum L.) cultivars under different management systems under southern Ontario conditions. We evaluated the potential of selections from spring wheat crosses and crosses between spring and winter wheat. Spring wheat yielded 20 to 32% less than spring barley (Hordeum vulgare L.) and 40% less than winter wheat in tests at five locations over a 4‐year period. Spring wheat lacked yield stability over years and locations. Tillering capacity, kernels per spike and kernel weight were lower in spring wheat than barley and winter wheat. The weakest component of spring wheat yield appeared to be the 20.6 average number of kernels per spike. A negative relationship was found between tillering and kernels per spike. This and the short period from seeding to maturity often associated with environmental stress may explain why management practices of increased nitrogen fertilization or reduced seeding rate had little influence on grain yield. Seeding delays reduced yields markedly. Spring wheat in southern Ontario appears to be limited by environment so that superior genotypes may not express their full potential. Crosses between spring and winter wheat lines may, therefore, have a greater potential for winter wheat improvement in Ontario than for selection of spring wheat types.

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Section: --------------------mentioning

confidence: 95%

Comparison of Spring Wheat and Barley with Winter Wheat: Yield Components in Ontario¹

Stoskopf¹,

Nathaniel²,

Reinbergs

1974

Agronomy Journal

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“…However, intensive visual selection can lead to loss of some valuable genotypes. Determining the combining ability of the source material makes it possible to get rid of a huge number of unpromising hybrid combinations and thereby dramatically increase the scale of crosses for the most valuable ones [8,10,11].…”

Section: Introductionmentioning

confidence: 99%

The study of the nature of the inheritance of quantitative traits in F₁ hybrids of winter soft wheat

et al. 2020

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In the conditions of the south of the Nonchernozem Zone, intraspecific hybridization of winter soft wheat was carried out. When selecting parental forms used in crossing, special attention was paid to such economically valuable traits as productive tilling capacity, the number of grains and the mass of grain per spike. The true (Htru) and hypothetical heterosis (Hhyp) on the basis of “plant height”, “length of the lower internode”, “length of the upper internode”, “general tilling capacity”, “productive tilling capacity”, “spike length”, “number of spikelets”, “number of grains” and “grain weight per spike” were determined. It was established that the inheritance of quantitative traits in hybrids of the first generation was distinguished by the complex nature of distribution by types. Studies have made possible to identify 5 hybrid combinations F1, in which the effect of heterosis manifests itself simultaneously on five quantitative characteristics (ear length, number of spikelets per ear, number of grains per ear, grain weight per ear, mass grain from a plant).

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“…The combinative ability [12,13] and heterosis in hybrid wheat forms obtained by crossing varieties which differ in their mode of life have been reported [14][15][16][17]. However, we have little available information about economically important traits in the offspring of such crosses.…”

Section: Introductionmentioning

confidence: 99%

Variability of Agronomically Important Traits in Spring Wheat Hybrids Obtained by Marker-Assisted Selection From Crosses of Winter Wheat With Spring Wheat Donors of Resistance Genes

Stasyuk¹,

Леонова²,

Салина³

2017

S-h. biol.

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A b s t r a c tSpring wheat is the main cereal crop in the West Siberian region of Russia and occupies more than 40 % of the acreage. The widening of the genetic diversity of this culture and the creation of new varieties with high productivity and resistance to environmental factors have always been a key problem of breeding. Winter wheat varieties which are characterized by a wide diversity of useful characters such as tolerance to abiotic stressors, productive tillers and yield can be used as a promising source of agronomically important traits. Despite the fact that the methodological approach to the introgression of the gene pool of winter wheat into the genome of spring wheat has been in use for a long time to increase the yield of spring varieties, at the moment there is little available information concerning the manifestation of valuable traits in offspring obtained from the winter and spring wheat hybridization. However, such results are important for assessing the combining ability of winter and spring wheat varieties and for the selection of potential parents by a complex of characters. For the identification of the winter and spring genotypes in the offspring resulting from the hybridization of winter and spring parents with the help of convenient breeding methods, a large sample size populations and a long period of cultivation of plant material are required. The application of MAS technologies and markers linked to the target loci can significantly decrease the time of development of new breeding lines. In creation of breeding lines resistant to leaf rust, the winter wheat varieties Filatovka and Biyskaya ozymaya, adapted for cultivation in the West Siberian region, were involved in a scheme of hybridization. Spring wheat introgression line 5366-180 (Triticum aestivum/T. timopheevii) и spring wheat cultivar Tulaikovskaya 10, containing genetic material of Thinopyrum intermedium were the donors of effective leaf rust resistance genes LrTt2 and Lr6Ai#2. The aim of this work was to evaluate the diversity of spring wheat forms obtained from these crosses on economically important traits and analysis of the genotype influence on their manifestation. The plants differing in winter and spring habits were selected in F 2 progeny by means of allele-specific markers to the VRN-1 genes. To identify genotypes containing leaf rust resistance genes, a microsatellite marker Xbarc232 and primers MF2/MR1r2 and MF2/MR4 specific for T. timopheevii and Th. intermedium translocations, respectively, were used. As a result of hybridization of winter varieties with spring donors, 122 F 2 plants were obtained, of which 30 homozygous spring plants with different allelic composition of VRN-1 genes were selected. Of these, 12 plants according to molecular data with Lr-specific primers contained alien translocations. For the comparative analysis of agronomic traits, six F 2 plants were used which possessed the same allelic composition of VRN-1 genes as in the initial spring donors but differed in the presence or absence of Lr...

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HETEROSIS IN F₁ HYBRIDS BETWEEN SPRING AND WINTER WHEATS

Cited by 10 publications

References 5 publications

Comparison of Spring Wheat and Barley with Winter Wheat: Yield Components in Ontario¹

Comparison of Spring Wheat and Barley with Winter Wheat: Yield Components in Ontario¹

The study of the nature of the inheritance of quantitative traits in F₁ hybrids of winter soft wheat

Variability of Agronomically Important Traits in Spring Wheat Hybrids Obtained by Marker-Assisted Selection From Crosses of Winter Wheat With Spring Wheat Donors of Resistance Genes

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HETEROSIS IN F1 HYBRIDS BETWEEN SPRING AND WINTER WHEATS

Cited by 10 publications

References 5 publications

Comparison of Spring Wheat and Barley with Winter Wheat: Yield Components in Ontario1

Comparison of Spring Wheat and Barley with Winter Wheat: Yield Components in Ontario1

The study of the nature of the inheritance of quantitative traits in F1 hybrids of winter soft wheat

Variability of Agronomically Important Traits in Spring Wheat Hybrids Obtained by Marker-Assisted Selection From Crosses of Winter Wheat With Spring Wheat Donors of Resistance Genes

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Resources

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HETEROSIS IN F₁ HYBRIDS BETWEEN SPRING AND WINTER WHEATS

Comparison of Spring Wheat and Barley with Winter Wheat: Yield Components in Ontario¹

Comparison of Spring Wheat and Barley with Winter Wheat: Yield Components in Ontario¹

The study of the nature of the inheritance of quantitative traits in F₁ hybrids of winter soft wheat