Inheritance in F1 and transgressive variability in F2 of the main ear length by crossing wheat varieties with different maturity

2020 ◽  
pp. 70-78
Author(s):  
M. Lozinskiy ◽  
H. Ustinova
Keyword(s):  
Winter Wheat ◽  
Significant Influence ◽  
Wheat Varieties ◽  
Recombinant Frequency ◽  
Shaping Process ◽  
Early Maturing ◽  
Selection For ◽  
Soft Winter Wheat ◽  
High Degree ◽  
Winter Wheat Varieties

In 2017–2019, the nature of the inheritance of ear length in F1 and transgressive variability in F2 populations obtained by hybridization of soft winter wheat varieties with different maturity were studied. It was found that in most combinations of crossbreeding, inheritance of ear length had a positive overdominance (hp = 1.1–39.0). A positive hypothetical heterosis was determined in early-maturing varieties in the maternal form, with the exception of the Kolchuga / Chornyava combination, by the length of the main ear (Ht = 3.6–44.8 %). a positive true heterosis (Hbt=1,1–32.9 %) was found in 15 of 20 hybrids. During the hybridization of medium-early, medium-ripe and medium-late varieties, all hybrids showed a positive hypothetical heterosis and 19 of 22 combinations had positive true heterosis. A significant influence of hybridization components on the indicators of the phenotypic dominance degree, hypothetical and true heterosis was established. Most of the F2 populations significantly exceeded the parental components of hybridization by the extreme maximum indexes of the main ear length, which indicates a significant shaping process and the possibility of selection on the basis of the studied trait. The maximum length of the main ear (10.3–12.1) was formed by most populations in which the maternal forms were varieties Kolchuga and Chornyava, as well as combinations Zolotokolos / Chornyava, Zolotokolosa / Stolychna and Yednist / Vidrada. The extreme maximum values reached 13.0–15.0 cm. In 36 of the 42 F2 populations, a positive degree and frequency of transgressions by the length of the main ear were determined, and their indexes largely depended on the pairs selection for hybridization. The highest degree of positive transgression was observed in the population Yednist / Vidrada (44.4 %) with a recombinant frequency of 86.7 %. Populations were characterized by a high degree and frequency of positive transgressions: Kolchuga / Yednist; Myronivska early / Antonivka; Myronivska early / Vdala; Zolotokolosa / Vidrada; Dobirna / Pyvna; Zolotokolosa / Stolychna; Zolotokolosa / Shchedra nyva; Myronivska early / Yednist; Myronivska early / Zolotokolosa; Myronivska early / B.Ts. n / a. Key words: soft winter wheat, maturity of varieties, combinations of crossbreeding, inheritance, hybrids, ear length, hypothetical and true heterosis, degree of phenotypic dominance, F2 populations, degree and frequency of transgressions.

scholarly journals Transgressive variability in the number of ears of the main spike in F2 populations when crossing soft winter wheat varieties of different early maturity.

2021 ◽  
Vol 1 (99) ◽  
pp. 189-206
Author(s):  
H. L. Ustinova
Keyword(s):  
Winter Wheat ◽  
Hydrothermal Conditions ◽  
Population Number ◽  
Wheat Varieties ◽  
Early Maturity ◽  
Positive Degree ◽  
Early Maturing ◽  
Soft Winter Wheat ◽  
Winter Wheat Varieties ◽  
Selection Of

Aim. Determination of the degree and frequency of positive transgressions by the number of ears of the main spike in F2 populations created by crossing varieties of soft winter wheat of different maturity depending on the hydrothermal conditions of the year and selection of economically valuable biotypes for subsequent breeding work. Methods. Field, laboratory, mathematical and statistical. Results. In the majority of F2 populations, created by hybridization of soft winter wheat varieties of different vegetation periods, a significant form-making process took place in terms of the number of spikelets in the main spike. The experimental data obtained indicate a significant effect of matched pairs before hybridization and hydrothermal conditions of the year on the manifestation and formation of the number of spikelet’s in an ear F2. So, under the conditions of 2019, the majority of F2 populations for the number of spikelet’s in the main spike (17.4–21.5 pcs.) Significantly exceeded the parental forms. A positive degree (Td = 5.3–33.3 %) and the frequency of transgression (Tf = 3.3–96.7 %) were found in 85.7 % of the populations. In 2020, the average population number of spikelets in the main spike (15.0–18.6 pcs.) Was significantly less. When used in hybridization of early maturing varieties by the parent form, the decrease in the number of spikelets was 0.5–19.9 %. At the same time, for crossing mid-early, mid-ripening and mid-late varieties, the number of spikelets decreased by 2.8–28.9 %. Thus, it can be argued that populations in which early maturing varieties were the maternal form are less exposed to unfavorable conditions of the year. A positive degree (Td = 5.3–38.9 %) and the frequency of recombinants (Tf = 3.3–46.7 %), under the conditions of 2020, was established in 35 out of 42 F2 populations, which amounted to 83.3 %. Conclusions. The use of winter wheat varieties of different early maturity in hybridization in most cases contributes to the formation of F2 in populations and the selection of positive transgressive biotypes by the number of spikelets in the main spike. Conducted studies have established a significant effect of the parental forms used in hybridization and the hydrothermal conditions of the year on the formation of the number of spikelets in the main spike in F2 populations of soft winter wheat. Populations where the early maturing varieties were the maternal form are characterized by a more stable manifestation of the number of spikelets in the main spike. The decrease in the number of spikelets in 2020 compared to 2019 was 0.5–19.9 % for 2.8–28.9 % in populations obtained by hybridization of mid-early, mid-ripening and mid-late varieties. In years with contrasting hydrothermal conditions, hybrid populations F2 were identified, which formed more than the average F2 number of spikelets in the main spike and had high rates of the degree and frequency of positive transgressions, namely: Mironovskaya early / Kolchuga; Kolchuga / Stolichnaya; Shchedraia niva / Vidrada; Antonovka / Stolichnaya.

scholarly journals Productivity and adaptability assessment of early- and latematuring varieties of winter soft wheat in the central nonchernozem region

2021 ◽  
Vol 344 (1) ◽  
pp. 129-132
Author(s):  
O. V. Gladysheva ◽  
M. I. Bannikova
Keyword(s):  
Winter Wheat ◽  
Stress Tolerance ◽  
Research Work ◽  
Average Yield ◽  
Wheat Varieties ◽  
Yield Variation ◽  
Early Maturing ◽  
Resistance To Stress ◽  
Soft Winter Wheat ◽  
Winter Wheat Varieties

Relevance and methods. Research work for breeding purposes was conducted in the context of ISA-branch center FNAC VIM in 2016–2018 G. G. the article presents the results of studies of gen-otypes of soft winter wheat in the collector’s nursery in 20162019 Material for the study were 14 varieties (early maturing and late maturing varieties). The purpose of the work is to study and select varieties based on the elements of plant productivity and adaptability in the conditions of the Central non-Chernozem region.Results. According to the results of assessing the yield of winter wheat varieties in the Ryazan region, it was found that the average yield for 2016–2019 for early — maturing varieties was 5.9 t/ha, for late-maturing varieties-6.9 t/ha. On average, over the years of research, it was noted that higher yields were observed in early — maturing varietiesMironovskaya 29 (5.6 t/ha), Mironovskaya 63 (5.4 t/ha), late-maturing varieties DSV 1113 (7.3 t/ha) and MV Nador (6.4 t/ha). The coefficient of yield variation ranged from 17.3 to 23.8% for early-maturing varieties, and from 14.1 to 24.0% for late-maturing varieties. Based on the conducted research, it was found that the highest resistance to stress of early-maturing varieties was shown by Svet — Toch (-3.4) and Mironovskaya 29 (-3.8), and late-maturing varieties-Scepter (-5.7). Mironovskaya os-tistaya (-6.9), Mironovskaya 63 (-6.7), and DSV– 1113 (10.8) and Tambor (-10.7) had the lowest stress tolerance in early maturing varieties. The maximum genetic flexibility in early — maturing varieties was observed in Mironovskaya ostista and Mironovskaya 63 (5,6), and in latematuring varieties-Iststar (8,0).

scholarly journals Forming of productivity of new soft winter wheat varieties (Triticum aestivum L.) subject to phyto-virus pressure

2008 ◽  
Vol 0 (1(7)) ◽  
pp. 50-62
Author(s):  
В. П. Петренкова ◽  
І. М. Черняева ◽  
Т. Ю. Маркова ◽  
Н. І. Рябчун ◽  
О. О. Ісаєнко
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Wheat Varieties ◽  
Soft Winter Wheat ◽  
Winter Wheat Varieties

IDENTIFICATION OF SOURCES OF STUNTING AND PRECOCITY OF SOFT WINTER WHEAT, USING CLASSICAL ASSESSMENT METHODS AND DNA MARKERS

2021 ◽  
Author(s):  
M.E. Mukhordova ◽  
Keyword(s):  
Winter Wheat ◽  
Dna Markers ◽  
Assessment Methods ◽  
Wheat Varieties ◽  
New Variety ◽  
Selection For ◽  
Soft Winter Wheat

The article presents the results of the identification of short-stemmed and photoperiod genes in the genotype of winter wheat samples, which are used in the selection for crossing pairs of wheat varieties in the development of a new variety.

scholarly journals Morphoagrobiological properties and productivity of new soft winter wheat varieties under the conditions of Kirovohrad variety testing station

2017 ◽  
Vol 13 (1) ◽  
pp. 95-99
Author(s):  
О. Л. Уліч ◽  
Г. М. Каражбей ◽  
С. В. Козак ◽  
Ю. Ф. Терещенко ◽  
І. В. Коховська
Keyword(s):  
Winter Wheat ◽  
Wheat Varieties ◽  
Soft Winter Wheat ◽  
Winter Wheat Varieties ◽  
Variety Testing

scholarly journals Features of the formation of productivity signs of the yielding capacity in winter wheat varieties under different growing conditions

2020 ◽  
Vol 27 ◽  
pp. 29-34
Author(s):  
V. V. Bazalii ◽  
I. V. Boichuk ◽  
Ya. O. Lavrynenko ◽  
H. H. Bazalii ◽  
Ye. O. Domaratskyi ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Wheat Variety ◽  
Wheat Breeding ◽  
High Plasticity ◽  
Wheat Varieties ◽  
Comparison Research ◽  
Yield Structure ◽  
Growing Conditions ◽  
High Degree ◽  
Winter Wheat Varieties

Aim. Further improvement and application of modern methods of wheat breeding of different types of development for adaptiveness caused by change in the character of manifestation of limiting environmental factors under conditions of the Southern Ukrainian Steppe. Methods. Field experiment, selection and genetic, calculation and comparison research methods were used. Wheat varieties of different genetic and ecological origin under different growing conditions were examined. Results. Analysis of the parameters of plasticity and stability of the elements of the yield structure in winter wheat varieties under different growing conditions revealed that their variability depends on both genotype and ecological gradients. For instance, by the weight of grain from ears only the varieties Kirena and Yaroslavna were distinguished by a high reaction to changes in growing conditions (bi= 1,215 – 1,635) among the analyzed genotypes, the other varieties Askaniiska, Askaniiska Berehynia, Znakhidka odeska and Klarisa manifested quite high plasticity (bi= 0,454 – 0,816). There was an analogous situation in the formation of the number of grains per ear. It is necessary to highlight an important biological feature of these varieties which formed the highest actual productivity under late sowing conditions and different sowing rates when compared to other varieties and realized its potentialities better. Conclusions.The research determined that every wheat variety of different development types should be considered in the aspect of its reaction to different growing conditions and to the capability of realizing genetic potential in a particular ecological region. The results of estimation of adaptiveness potential determined a high degree of homeostaticity in the winter wheat varieties Askaniiska, Askaniiska Berehynia, Perlyna and the variety of an alternative type Klarisa. Keywords: winter wheat, varieties of alternative types, adaptiveness, plasticity, stability.

scholarly journals Productivity and elements of its structure in new genotypes of soft winter wheat of the south of Russia

2020 ◽  
pp. 16-19
Author(s):  
Viktor Ivanovich Kovtun ◽  
Alesya Aleksandrovna Sukhareva
Keyword(s):  
Winter Wheat ◽  
Russian Federation ◽  
Standard Variety ◽  
North Caucasus ◽  
Wheat Varieties ◽  
The North ◽  
Yield Structure ◽  
The Russian Federation ◽  
Soft Winter Wheat ◽  
Winter Wheat Varieties

The article presents the best in yield genotypes of soft winter wheat, created in recent years in the North Caucasus FNATS. In terms of grain yield, on average, for two years of study (2018-2019), the best genotypes exceeded the standard variety Thunder from 0,50 to 1,97 t / ha. A particularly high excess over the standard was noted for the main elements of the yield structure: a mass of 1000 grains, the number of grains per spike, and a mass of spike grain. It is indicated that such varieties as Shield, Armada, Lyuda, Batya, Moretz, Source, 1217/14, 1008/15, 1332/15, 1731/15 can be effectively used as genetic sources when creating new winter wheat varieties for the conditions of the Russian Federation.

scholarly journals Soft winter wheat varieties with resistance to negative environmental factors

2018 ◽  
Vol 14 (3) ◽  
pp. 255-261
Author(s):  
Н. В. Булавка ◽  
Т. В. Юрченко ◽  
О. М. Кучеренко ◽  
А. В. Пірич
Keyword(s):  
Environmental Factors ◽  
Winter Wheat ◽  
Wheat Varieties ◽  
Soft Winter Wheat ◽  
Winter Wheat Varieties

The effects of selection for number of ears on the yield and water economy of winter wheat

1981 ◽  
Vol 97 (3) ◽  
pp. 523-532 ◽  
Author(s):  
P. Innes ◽  
R. D. Blackwell ◽  
R. B. Austin ◽  
Margaret A. Ford
Keyword(s):  
Winter Wheat ◽  
Water Use ◽  
Full Irrigation ◽  
Total Water ◽  
Wheat Varieties ◽  
Final Number ◽  
Neutron Probe ◽  
Selection For ◽  
Reduced Water ◽  
Winter Wheat Varieties

SUMMARYSelections for high (H) and low (L) number of ears were made from crosses between three pairs of winter wheat varieties. By the F5 generation there were consistent, heritable differences between H and L selections in each cross. In an irrigated trial the H lines outyielded the L lines even in one experiment where compensatory increases occurred in the weight of grain per ear of the L lines. Drought for the 5 weeks before an thesis reduced the final number of ears of the H lines by 14% but did not affect the final number of ears of the L lines. This reduction in the final number of ears of H lines resulted in them being outyielded by L lines by 8%. Drought from anthesis to maturity did not significantly reduce grain yields of either H or L lines below their values under full irrigation.When fully irrigated, the evapotranspiration of H and L lines from 1 April until maturity was approximately 360 mm. The drought before anthesis reduced water use to about 320 mm, there being no difference between selections in total water use by the crops during this period. However, the L lines extracted significantly more water from the soil below a depth of 0.9 m during this drought than the H lines, and this appeared to make the L lines less susceptible to drought at this stage. Water use by the crop during the late drought could not be reliably estimated because by this time water was being extracted from below the level of the neutron probe access tubes.It is concluded that in an environment where a pre-anthesis drought is unlikely to occur, varieties with high ear-bearing capacity may give the best yields. Selection for types showing a limited tillering capacity may prove to be an effective compromise in regions with erratic rainfall where pre-anthesis droughts can occur.

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