Research Article - (2021) Volume 11, Issue 2

Yu.Yu. Chuprina1, I.V. Klymenko2*, L.V. Golovan1, I.M. Buzina1, Y.M. Belay1, V.H. Mikheev1, V.V. Nazarenko1, S.O. Vynohradenko1 and D.D. Khainus1
 
*Correspondence: I.V. Klymenko, The ?lant Production Institute named after V. Ya. Yuryev of NAAS, Kharkiv, Ukraine, Email:

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Abstract

The article highlights the results of studying the influence of agrometeorological conditions on the growth and development of spring wheat, the variability of morphological markers of the studied samples. The regularities of the influence of hydrothermal factors of growing conditions on the duration of interphase periods of spring wheat have been clarified. We established that at the beginning of the vegetation, the onset of development phases is significantly influenced by the amount of precipitation. During the formation of generative organs, the most significant impact on plants is caused by the complex hydrothermal factor HTC (hydrothermal coefficient. The success of using samples of the genus Triticum L. as an adaptive potential of the genetic resources of soft wheat depends to some extent on their environmental factors, which to some extent modify and inherit the varieties created with their participation. All these issues are very relevant and insufficiently researched, and in the conditions of the eastern Forest-Steppe of Ukraine, they have not been studied at all. This question is especially true of amphidiploid specimens. The variability of morphological and economically valuable traits must be considered when developing new models of varieties. The characteristics of spring wheat samples of different ecological and geographical origin are presented Triticum aestivum, Triticum durum, Triticum мonococcum, Triticum boeoticum, Triticum sinskajae, Triticum timopheevii, Triticum militinae, Triticum dicoccum, Triticum ispahanicum, Triticum persicum, Triticum turgidum, Triticum aethiopicum, Triticum spelta, Triticum compactum, and amphidiploid specimens.

Keywords

spring wheat, variability, sample, collection, pubescence, mass, ear, development.

Introduction

Due to global climate change, adaptive and ecological selection, which is aimed at stabilizing crop yields, has become especially important in recent years. The modern model of a grade should provide a high level of productivity in combination with climatic conditions, both favorable and not to reduce it at unfavorable, to possess high homeostasis of the production process (Zubets, 2010). The selection of source material among the huge polymorphism of Triticum L. samples using an ecological approach and the cultivation of varieties with high potential productivity remains one of the main priorities for crop improvement.

The yield of spring wheat is determined by the number of plants per unit area and the productivity of an individual plant, which in turn includes productive business, the number of grains in the ear, and the weight of one ear. Several researchers point to the decisive role of productive business in forming high-yielding wheat agrocenoses and the close relationship between these traits. Theoretical substantiation and practical implementation of the program of adaptive and ecological selection of soft spring wheat based on morphometric traits as genetic markers of valuable traits, which will establish the degree of homogeneity of plants by morphometric traits in samples of different species. To determine the influence of genotype-environmental interactions on the manifestation of morphometric traits and productivity of soft spring wheat, soft spring can select the best samples of complex functional traits as source material for further selection.

A significant indicator in the formation of crop productivity is the ability of plants to fully undergo all phenological phases, which further affects both the yield of the crop and the quality of seeds. The onset of phenological phases and their duration largely depend on the year's weather conditions (Koshkin, 2010). Weather conditions cannot be controlled, but they can be adapted to achieve the maximum integrated result (Musienko, 2006). Agrometeorological conditions change from year to year, affecting the primary indicator of agricultural production - crop yields. The low stability of agricultural production significantly affects all integrated indicators of the country's economy, including national products. Therefore, one of the main tasks of optimizing agricultural production, including grain production, is developing ways to consider and reduce weather risk (Zubets, 2010).

The aim is to analyze the variability of morphological markers of the genus Triticum L. depending on the ecological and geographical origin to determine the morphological descriptors that can be used in the selection of source material. Also, to establish the influence of ecological and climatic conditions of the region on the duration of interphase periods of various samples and show possibilities of use of the received data at the selection on adaptability).

Materials and Methods

Field research was conducted in 2018–2019 at the Educational Research and Production Center "Experimental Field of V.V. Dokuchaiev Kharkiv National Agrarian University (KhNAU named after V.V. Dokuchaiev). The experimental field is located within the land use of the educational and experimental farm of V.V. Dokuchaiev Kharkiv National Agrarian University in the northeastern part of the Kharkiv region. Sowing was carried out in the optimal time for the culture of the first decade of April. Collectible samples were sown by hand under a marker, two rows 1 m long each with a row spacing of 0.15 m, at the rate of 100 grains per running meter. The estimated area of the plot for each sample was 1m2. All phenological observations were performed following the guidelines for the study of wheat collections.

The species were used as starting material of 76 samples Triticum aestivum, Triticum durum, Triticum monococcum, Triticum boeoticum, Triticum sinskajae, Triticum timopheevii, Triticum militinae, Triticum dicoccum, Triticum ispahanicum, Triticum persicum, Triticum turgidum, Triticum aethiopicum, Triticum spelta, Triticum compactum and amphidiploid specimens. The source material was obtained from the National Center for Plant Genetic Resources of Ukraine (NCGRRU) and had some economically valuable features. Samples were introduced from different ecological and geographical areas (Tables 1-3).

n / a National catalog number Institution registration number Sample name Variety Country of origin
Triticum aestivum
1 UA 0100098 IR 08517S Sunnan var. lutescens SWE
2 UA 0101113 IR 11742S Prokhorovka var. lutescens RUS
3 UA 0104110 IR 12602S Kharkiv 30 var. lutescens UKR
4 UA 0106145 IR 13173S L 501 var. lutescens RUS
5 UA 0110938 IR 15164S Simkodamironovskaya var. lutescens UKR
6 UA 0111008 IR 15206S Yrym var. erythrospermum KAZ
7 UA 0105661 IR 12049S CIGM.250- var. erythrospermum MEX
8 UA 0110937 IR 14892S Phyto 14/08 var. erythrospermum UKR
9 UA 0110936 IR 14891S Phyto 33/08 var. erythrospermum UKR
10 UA 0111123 IR 15595S L 685-12 var. lutescens UKR
Triticum durum Desf
11 UA0201229 IR 12313S Zolotko var. muticohordeiforme UKR
12 UA0201199 IR 13580S Orenburgskaya 21 var hordeiforme RUS
13 UA0201431 IR 14943S Nurly var. hordeiforme KAZ
14 UA0201201 IR 14045S Slavuta var. leucomelan UKR
15 UA0200923 IR 12773S Bukuría var. melanopus UKR
16 UA0201428 IR 14941S Altun Segus var. hordeiforme KAZ
17 UA0201386 IR 14438S Metiska var. melanopus UKR
18 UA0201452 IR 15566S Novacia var hordeiforme UKR
19 UA0201453 IR 15548S Diana var. hordeiforme UKR
20 UA0201426 IR 14937S Kustanayskaya 30 var. hordeiforme KAZ

Table 1. Characteristics of the studying samples Triticum aestivum and Triticum durum

n / a National catalog number Form Variety Country of origin
1 UA0300104 monococcum var. vulgare BGR
2 UA 0300221 monococcum var. monococcum AZE
3 UA 0300223 monococcum var. vulgare ALB
4 UA 0300254 monococcum var. monococcum ARM
5 UA 0300282 monococcum var. monococcum HUN
6 UA 0300310 monococcum var. hohensteinii GEO
7 UA 0300311 monococcum var. nigricultum SYR
8 UA 0300313 monococcum HUN
9 UA0300402 boeticum var. boeticum UKR
10 UA0300224 sinskajae var. sinskajae RUS
11 UA0300545 timopheevii var. nigrum BLR
12 UA0300257 militinae var. militinae RUS
13 UA0300008 dicoccum var. aeruginosum RUS
14 UA0300327 dicoccum var. aeruginosum RUS
15 UA0300407 dicoccum var. nudidicoccum UKR
16 UA0300406 dicoccum var. nudirufum UKR
17 UA0300199 dicoccum var.pseudogunbadi IRN
18 UA0300009 dicoccum var.serbicum RUS
19 UA0300183 dicoccum var.serbicum RUS
20 UA0300021 dicoccum var. volgense KAZ
21 IU070615 dicoccum var.submajus BGR
22 IU0700070 ispahanicum var. ispahanicum IRN
23 UA0300490 persicum var. persicum GEO
24 UA0300495 persicum var. rubiginosum GEO
25 UA0300110 turgidum var. plinianum KGZ
26 UA0300237 turgidum var.rubroathrum GRC
27 UA0300376 turgidum BGR
28 IU070589 aethiopicum var.nigriviolaceum ERI
29 UA0300238 spelta var.subbaktiaricum UZB
30 UA0300304 spelta var.album AUS
31 UA0300387 spelta var.caeruleum CAN
32 UA0300388 spelta var.duhamelianum CAN
33 UA0300391 spelta var.caeruleum CAN
34 UA0300392 spelta var.alefeldii CAN
35 UA0300398 spelta var.arduini UKR
36 UA0300443 spelta var.caeruleum RUS
37 UA0300546 spelta var.caeruleum RUS
38 UA0300240 compactum var.erinaceum ARM
39 UA0300354 compactum var.pseudoicterinum GRC
40 UA0300368 compactum var.humboldtinflatum CHN
41 UA0300528 compactum var.kerkianum GEO

Table 2. Characteristics of the studied samples of the genus Triticum L.

n / a National catalog number Sample name Pedigree Country of origin Institution of origin
1 UA0500004 PAG - 12 T. persicum x T.monococcum RUS VIR
2 UA0500007 PAG - 20 T. timococcum x T.monococcum RUS VIR
3 UA0500008 PAG – 31 T. dicoccum и-329428, Poland х T. RUS VIR, DOS VIR
monococcum k-20636, Ispaniya
4 UA0500009 PAG – 32 T. dicoccum к-14055, Armenia x T. RUS VIR, DOS VIR
monococcum и-452639, Czech
Republic
5 UA0500010 PEAG T. dicoccum и-244569, Germany х RUS VIR, DOS VIR
Ae. Tauschii л-110
6 UA0500014 Triticum x kiharae T. timococcum x Ae. Tauschii JPN  
7 UA0500018 Haynatricum АD (T.dicoccum-D.villosum) RUS Moscow
Agricultural
Academy. K.A.
Timiryazeva, Russia
8 UA0500022 АD8 T. dicoccum x Ae. triuncialis AZE Research Institute
of Genetics and
Breeding of the
Academy of
Sciences of the
Republic of Azerbaijan
9 UA0500023 PAG - 13 T. dicoccum x T. monococcum RUS VIR
10 UA0500024 PAG - 39 T. dicoccum x к-150007, Poland х T.sinskajae RUS VIR, DOS VIR
T. timopheevii x T. monococcum
11 UA0500025 Triticum x
timococcum
RUS Moscow
Agricultural
Academy. K.A.
Timiryazeva, Russia
12 UA0500026 Triticum x sinskourarticum T. sinskajae x T.urartu ARM Armenian
СHI
13 UA0500043 PAG -4 T. durum v. Stebutii k-16477 х
T. monococcum v. macedonicum k-18140
RUS VIR
14 UA0500044 PAG - 7 T. durum x T. monococcum RUS VIR
15 UA0300107 T. timopheevii x timopheevii

Table 3. Characteristics of the studied amphidiploid samples of the genus Triticum L.

Evaluation of the genetic structure of the collection of spring wheat samples was performed on morphological grounds, which included coloration of the ear, types of ear pigmentation, types of ear shape, the coloration of the spike, pubescence of ear scales.

Phenological observations were performed following the Methodology of state varietal testing of crops (Volkodav, 2010). The beginning of each phase of growth and development was set at 10% of plants, full not less than 75%. Stages and microstages of plant development were determined by the BBSN scale (Kuperman, 1984).

We studied the nature of the variability of developmental phases and quantitative traits during the growing season and conducted a visual assessment of qualitative traits of wheat collection samples. Thirty plants of each sample were analyzed. Biometric observations, accounting, and measurements were carried out according to the "Methods of examination of plant varieties of cereals for difference, homogeneity, and stability" (Kostenko, 2016).

The sowing time, the emergence of seedlings, phases of 23 leaves, tillering, tube emergence, flag leaf, earing, flowering, milkwax ripeness, ripening were recorded.

–the presence or absence of awns on the ear; spiny forms have long spines that exceed the length of the ear, medium equal to it, short less than the length of the ear. There are also hemispherical forms, in which the lower spikelets often form filamentous processes instead of spines, and the middle and upper spikelets have short or medium-length spines;

–pubescence of the ear the presence of hairs on the spikelet scales and the open part of the outer flower scales; there is no ear without pubescence;

–coloration of the ear (spikelet scales), which can be white (light yellow, yellow–straw), red (pale red, orange, red-brown), black, graysmoky on white and red backgrounds;

–the color of the awns is the same as the color of the ear or black in both white-eared and red-eared varieties;

–color of grains white (floury white, vitreous white, amberyellow) or red (red-brown) (Volkodav, 2000).

Statistical processing of experimental data was performed according to generally accepted methods using MS Excel 2003.

Results

Agrometeorological conditions of the growing season of the genus Triticum L. differed over the years of research and were not always favorable for plants and phytopathogens. The hydrothermal coefficient was used to detect the effect of precipitation and air temperature on the test samples (Fig. 1).

ukrainian-journal-ecology-hydrothermal

Fig 1: Dynamics of the hydrothermal coefficient of Selyaninov during the growing season of spring wheat (Experimental field of KhNAU, 2018–2020).

Thus, in 2018, the period of the VVSN 09 phase (sowing-seedlings) (09.04–21.04) was characterized by dry conditions (HTC = 0.3; 0.1; 0.0, respectively). In 2018, the VVSN 30 phase (ladder-exit to the tube) took place in three decades of weather conditions and was characterized by arid and dry conditions (HTC = 0.37; 0; 0.95, respectively). Accordingly, in 2019 this period was marked by dry conditions, excess moisture and arid conditions (HTC = 0.07; 1.79; 0.19, respectively), 2020 (HTC = 0.16; 1.23; 1.1, respectively). ). The period of VVSN 21 (beginning of tillering) in 2018 was characterized by dry conditions (HTC = 0). In 2019, the period of VVSN 73 (milk-wax ripeness) was dry (HTC = 0), which did not contribute to the formation and filling of wheat grain. In general, during the study period, the humidity level was insufficient and was characterized in 2018, 2019 (HTC = 0.39; 0.41), and in 2020 was characterized by a sufficient amount of moisture and (HTC = 1.04). Thus, we can conclude that in 2020, BBSN 37 (flag leaf – flowering ears) (HTC was 5.41) contributed to a sufficient filling of grain compared to 2018-2019.

In the period from 2018¬2020, we assessed the morphological variability of the collection of spring wheat, which showed polymorphism on all studied traits. The number of gradations per trait varied from 2 to 8. In populations of collecting samples of spring wheat over the years of the study, the following phenotypes were found: the primary color of spikelets: white, yellow, red, brown, red (Fig. 2);

ukrainian-journal-ecology-variability

Fig 2: Variability of the main color of the ear of spring wheat

-type of spotting (pigmentation) of the ear: no, a spot in the center, painted more than half of the ear. The revealed morphological signs of pigmentation of a spike of spring wheat are presented in Fig. 3;

ukrainian-journal-ecology-pigmentation

Fig 3: Types of pigmentation of spring wheat ears

-varieties of ear shape: pyramidal, cylindrical, spindle-shaped (middle is wide, narrows up and slightly downwards); club-shaped (extension to the top). Examples of the variety of ear shape are presented in Fig.4;

ukrainian-journal-ecology-ear-shape

Fig 4: Varieties of ear shape

-varieties of awns: white, red, black (see Fig. 5).

ukrainian-journal-ecology-spines

Fig 5: Varieties of spines

Our observations showed that in the conditions of the Eastern Forest-Steppe of Ukraine, the studied samples developed normally, passed all stages of organogenesis, and formed a full-fledged ear. However, during the study period, agrometeorological conditions in different years affected the growth, development, and productivity of culture. The development of spring wheat plants begins with the germination of seeds. The speed of this stage depends on a combination of factors: soil temperature, humidity, and access to oxygen. We observed that the sprouts of spring wheat appear on average on 8-10 days after sowing (Fig. 6). The main factor determining the rate of germination is soil moisture, the primary source of precipitation. The length of the growing season is an essential factor in adapting the culture to environmental conditions. This indicator gives an idea of the prospects for growing different species in certain climatic conditions (Koshkin, 2010). Analysis of the collection of spring wheat by the duration of the growing season and individual phases of development allowed to establish the variation of these traits at the interspecific and intraspecific levels. The results of the analysis are presented in Fig. 7. The duration of the vegetation period (ВВСН 0-99) of spring wheat varies from 120 to 180 days, depending on the type of samples. The collection we studied was represented by genotypes of one group of maturity: medium-ripe. The shortest growing season, which lasted an average of 100 days, was Tr. spelta L. The most extended growing season was characterized by amphidiploid wheat species 105 days on average for all samples of this species.

ukrainian-journal-ecology-flag-leaf

Fig 6: Number of plants with a curved flag leaf

ukrainian-journal-ecology-hairiness

Fig 7: Hairiness of ear scales,

Observations have shown that the phase ВВСН 0911 (sowing entire seedlings) was the shortest (average on the species 8.5 days) in the samples of the species – Triticum persicum. The most extended phase of ВВСН 13 (23 leaves) was observed in amphidiploid samples of wheat, which lasted 11.6 days. The phase of ВВСН 1118 (total seedlings – phase of 2th–3rd leaves) was the shortest observed in the samples of the species Triticum dicoccum, which averaged 9.4 days. The period of ВВСН 19-28 (2th3th leaves tillering) in samples of the species Triticum spelta was the shortest and amounted to 24.8 days on average for all samples of this species. Amphidiploid samples showed a slightly worse result in this phase and averaged 27.2 per species. Phase ВВСН 2938 (tilleringexit into the tube) was the shortest was found in samples of the species Triticum persicum on average in the sample was 2.0 days, the most extended phase from tillering to exit into the tube was in samples of the species Triticum aestivum and was 3.7 days on average in appearance. The phenological phase of BBCN 3949 (exit to the flag leaf tube) was the shortest in Triticum durum and averaged 3.0 days on samples of this species, the longest this phase was found in samples of Triticum dicoccum and is 4.9 days on average by type. ВВСН 4959 (flag leaf-flowering, earing) was the shortest in Triticum aestivum and was 2.6 days on average for all samples of this species, and the most extended phase of ВВСН 49-59 was found in amphidiploid samples of wheat and was on average for the species 5.1 days. The period of ВВСН 6078 (flowering, earing milkwax ripeness) was the shortest was found in samples of Triticum monococcum and was 5.6 days on average, and the most extended phase was found in Triticum compactum and was nine days on average in samples of this species. Phase ВВСН 7889 (milkwax ripeness-maturation) was shortest observed in samples of the species Triticum aestivum and was 25.3 days, on average per species. The longest phase was recorded in Triticum persicum (31.0 days on average). The period of ВВСН 9099 (ripeningharvesting) was the shortest in Triticum compactum and Triticum persicum (8.5 days), while the longest was in Triticum aestivum and averaged 14.2 days.

Species Interphase period
Sowing-full
seedlings (Ð?Ð?СН
09-11)
Full seedlings –
phase of 2thâ??3th
leaves (Ð?Ð?СН 11-18)
Phase 2th-3th
leaves - tillering
(Ð?Ð?СН 19-28)
Tillering-exit into
the tube (Ð?Ð?СН 29-38)
Exit to the tube-flag sheet
(Ð?Ð?СН 39-49)
Flag leaf-flowering, earing
(Ð?Ð?СН 49-59)
Flowering,
earing – Milk-wax
ripeness (Ð?Ð?СН 60-78)
Milk-wax
ripeness-maturation
(Ð?Ð?СН 78-89)
Maturation-collection
harvest (Ð?Ð?СН 90-99)
Duration of the
growing season,
days (Ð?Ð?СН 0-99)
mean CV mean CV mean CV mean CV mean CV mean CV mean CV mean CV mean CV mean CV
1* 9.0±1.0 11.1±1.4 11.8±1.1 9.7±1.3 25.0±1.6 7.0±0.9 3.7±0.6 17.3±2.3 3.3±0.6 18.3±2.4 2.6±0.5 20.7±2.8 7.6±0.9 12.1±1.6 25.3±1.7 6.6±0.9 14.2±1.3 8.8±1.1 102.3±3.4 3.3±0.7
2 8.9±0.9 11.2±1.5 11.8±1.1 9.7±1.3 26.0±1.7 6.5±0.8 2.6±0.5 20.7±2.8 3.0±0.6 19.2±2.6 2.8±0.6 19.9±2.7 6.4±0.8 13.2±1.7 27.9±1.8 6.3±0.8 12.5±1.2 9.4±1.2 101.9±3.4 3.3±0.7
3 9.0±1.1 12.6±1.7 11.9±1.4 11.9±1.6 26.1±2.1 8.0±1.0 3.0±0.7 23.6±3.2 3.7±0.8 21.2±2.9 3.0±0.7 23.6±3.2 5.6±1.0 17.3±2.3 27.3±2.1 7.8±1.0 11.6±1.4 12.0±1.6 101.1±4.1 4.1±1.1
4 9.4±1.1 11.5±1.5 11.6±1.3 11.1±1.4 26.0±1.9 7.4±1.0 2.1±0.5 26.0±3.6 4.9±0.8 17.1±2.3 3.4±0.7 20.6±2.8 6.4±1.0 15.0±2.0 27.2±2.0 7.2±0.9 12.0±1.3 10.9±1.4 103.0±4.0 3.8±0.9
5 9.2±1.1 11.6±1.5 11.8±1.2 10.3±1.3 24.8±1.8 7.1±0.9 3.2±0.6 19.7±2.6 4.2±0.7 17.2±2.3 4.0±0.7 17.7±2.4 6.7±0.9 13.7±1.8 25.4±1.8 7.0±0.9 10.4±1.1 10.9±1.4 100.0±3.5 3.6±0.8
6 9.0±1.7 19.2±2.6 12.0±2.0 16.7±2.2 25.0±2.9 11.5±1.5 3.0±1.0 33.3±4.8 3.5±1.1 30.9±4.3 4.7±1.3 26.5±3.7 9.0±1.7 19.2±2.6 27.7±3.0 11.0±1.4 8.5±1.7 19.8±2.7 102.5±5.8 5.7±2.0
7 8.7±2.1 24.0±3.3 12.3±2.5 20.1±2.7 25.3±3.6 14.0±1.8 3.0±1.2 40.8±6.1 3.7±1.3 36.9±5.4 4.7±1.5 32.7±4.7 6.7±1.8 27.4±3.8 29.0±3.8 13.1±1.7 9.7±2.2 22.7±3.1 103.0±7.2 7.0±2.9
8 8.5±2.9 34.3±4.9 12.5±3.5 28.3±3.9 26.0±5.1 19.6±2.6 2.0±1.4 70.7±12.9 4.5±2.1 47.1±7.3 4.5±2.1 47.1±7.3 6.0±2.4 40.8±6.1 31.0±5.6 18.0±2.4 8.5±2.9 34.3±4.9 103.5±10.2 9.8±5.0
9 11.6±0.9 7.8±1.0 11.7±0.9 8.1±1.0 27.2±1.4 5.3±0.7 3.1±15.6 15.6±2.0 3.4±0.5 15.1±2.0 5.1±0.6 12.2±1.6 7.4±0.8 10.2±1.3 29.9±1.5 5.1±0.6 5.9±0.7 11.4±1.5 105.4±2.8 2.7±0.5
max 11.60 12.50 27.20 3.70 4.90 5.10 9.00 31.00 14.20 105.40
min 8.50 11.60 24.80 2.00 3.00 2.60 5.60 25.30 5.90 100.00
R 1.36 1.08 1.10 1.85 1.63 1.96 1.61 1.23 2.41 1.05

Table 4 The duration of phenological phases and the growing season in the genus Triticum L., 2018-2020 year

Conclusions

The most extended phase ВВСН 0911 (sowing-full seedlings) was observed in amphidiploid samples (11.6 days), and the shortest phase was recorded in samples of Triticum persicum (8.5 days); the most extended phase ВВСН 1118 (total seedlingsphase 2x-3 leaves) was observed in samples of Triticum persicumi (12.5 days), and the shortest phase was recorded in samples of Triticum dicoccum (11.6 days). The most extended duration of the vegetation period ВВСН 0-99 was recorded in amphidiploid samples and was 105.5 days, and the shortest growing season was in Triticum spelta (100 days). The duration of the interphase periods mainly depends on heat and moisture. We registered that at the beginning of the growing season of the studied crop, the rate of development phases is significantly influenced by precipitation.

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Author Info

Yu.Yu. Chuprina1, I.V. Klymenko2*, L.V. Golovan1, I.M. Buzina1, Y.M. Belay1, V.H. Mikheev1, V.V. Nazarenko1, S.O. Vynohradenko1 and D.D. Khainus1
 
1Kharkov National Agrarian University named after V.V. Docuchaev, Kharkiv, Ukraine
2The ?lant Production Institute named after V. Ya. Yuryev of NAAS, Kharkiv, Ukraine
 

Citation: Chuprina, Yu.Yu., Klymenko, I.V., Golovan, L.V., Buzina, I.M., Belay, Y.M., Mikheev, V.H., Nazarenko, V.V., Vynohradenko, S.O., Khainus, D.D. (2021). Variability of morphological markers and vegetation period of spring wheat samples of different ecological and geographical origin. Ukrainian Journal of Ecology , 11 (2), 241-248.

Received: 16-Mar-2021 Accepted: 22-Apr-2021 Published: 30-Apr-2021, DOI: 10.15421/2021_106

Copyright: This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.