SCIENCE AND INNOVATION IN THE
EDUCATION SYSTEM
International scientific-online conference
76
THE INHERITANCE OF EARLY MATURITY TRAITS IN F3 HYBRID
FAMILIES OF SUNFLOWER
R.S.Seytbaev
PhD in agricultural sciences
B.U.Aytjanov
Doctor of science in agriculture
U.E.Aytjanov
Doctor of science in agriculture
Karakalpakstan agricultural science institute
https://doi.org/10.5281/zenodo.14725499
Abstract.
This article analyzes the variability of sunflower fruiting in F3
families, both simple and complex, based on selective selection, and selects them
for subsequent planting as starting material combining valuable economic traits.
Keywords:
sunflower, breeding nursery, preliminary seedling nursery, root
weight, variation analysis, rapidity, basket, productivity, root output, simple and
complex rotation, flexibility.
Introduction.
Meeting the demand for oilseed crops as essential food
products for people's daily lives plays a crucial role in the development of our
country's economy, as these oils are of great importance in maintaining human
health. Therefore, in order to achieve wide variability in valuable economic traits
when creating new sunflower varieties, new genotypes emerge that are adapted
to new living conditions and can change as a result of genetic alterations based on
simple and complex hybridization.
Scientific research by I.U. Anarbaev [1] and other scientists has shown that
the selected sunflower samples took 45-48 days from emergence to flowering,
and 35-40 days from flowering to ripening. Consequently, the sunflower's growth
period is 80-85 days. It has been reported that in Uzbekistan's conditions, early-
ripening sunflower varieties can be sown as a secondary crop after wheat,
yielding an average of 12-25 centners per hectare.
Sunflower varieties, regardless of their homogeneity, under the influence of
light regimes, differ to a certain extent in the timing of bud formation, flowering,
and ripening. The morphological characteristics of sunflower varieties are also
considered. As a result, breeders have ample opportunities to select forms with
different lengths of vegetation periods and stem length.[2]
The materials and methods of the study. Our research was conducted in field
and laboratory conditions within the framework of the applied project of the
Karakalpakstan agricultural science institute"Creation of new promising, high-
SCIENCE AND INNOVATION IN THE
EDUCATION SYSTEM
International scientific-online conference
77
yielding, high-yielding varieties of sunflower, adapted to the soil and climatic
conditions of Karakalpakstan, faster than simple and complex tillering." All field
observations were conducted according to the "Methodology for Conducting Field
Experiments." [3]
Analysis and results. It is known that one of the main indicators of sunflower
varieties in our republic is early maturity, which plays a significant role in the
positive development of key economically valuable traits. This is because the
harvest collected on time is of high quality and fully ripe. In addition, early-
maturing varieties provide the basis for obtaining two harvests per season and
create the opportunity to use them as the main crop after wheat.
In our research, variation series were compiled and the variability of the
early maturity trait of F3 simple and complex sunflower hybrids was analyzed
(Table 1). Plants were distributed in families across 8 classes ranging from 2 to 8
days according to the indicators of the vegetation period. In simple and complex
hybrids, families predominantly occupied classes 3 and 5, with vegetation periods
ranging from 72.1 to 77.0 days.
Among the studied F3 hybrids, the families with the earliest maturity, i.e., up
to 72.1 days, accounted for 29.7% of F3 hybrids (S-Alstor x KK-1) and 12.5% of
F3 hybrids (Sor Gollips x KK-1), while the vegetation period of plants in other
hybrids was shorter, and the coefficient of variation in ordinary hybrids was 2.0-
2.6%. In the conducted research, plants located on the right side of the variation
row, i.e., late-maturing plants according to the vegetation period trait, were
disposed of, and families located on the left side of the variation row according to
the early maturity trait were preserved.
1-Table
Variational analysis of F3 hybrids of sunflowers by maturity trait.
№
Simple and complex
hybrids
К=2
н
М±м
δ
В%
68
70
72
74
76
78
80
82
1.
Ғ
3
(Tel’s х КК-1)
-
-
2
5
13
8
6
1
35
76,8±0,4
2,3
3,1
2.
Ғ
3
(С- Alstor х КК-1)
2
9
12
8
5
-
1
-
37
72,4±0,4
2,5
3,5
3. Ғ
3
(С-НС-Н-2011 х КК-1)
-
-
1
7
11
9
5
3
36
77,0±0,4
2,5
3,3
4.
Ғ
3
(Jant lower х КК-1)
-
-
3
5
12
7
4
2
33
76,6±0,4
2,6
3,4
5.
Ғ
3
(Sor Gollips х КК-1)
1
3
9
10
7
2
-
-
32
73,5±0,4
2,3
3,2
6.
Ғ
3
(Ак-12/95 х КК-1)
-
-
1
6
14
12
2
1
36
76,6±0,3
2,0
2,6
7.
Ғ
3
[Ғ
1
(Jant lower х КК-1)
х (Ғ
1
(Ак-12/95 х КК-1)]
3
9
10
8
3
1
-
-
34
72,1±0,4
2,4
3,4
SCIENCE AND INNOVATION IN THE
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International scientific-online conference
78
8.
Ғ
3
[Ғ
1
(С-НС-Н-2011 х
КК-1) х Ғ
1
(С- Tel’s х
КК-1)]
1
8
12
6
4
-
2
-
33
72,7±0,4
2,7
3,8
9. Ғ
3
[Ғ
1
(Sor Gollips
х КК-1)
х (Ғ
1
(Tel’s х КК-1)]
2
10
13
4
3
2
-
-
34
72,1±0,4
2,5
3,4
Conclusion.
In several years of research, based on various selections, simple and
complex hybrid families of sunflowers F3 were selected for transfer to the next
nursery as starting material, combining early maturity and positive main
economically valuable traits.
References:
1.
Аманов А.А., Анарбаев Д.Л., Идиятуллина Д.Л. ва бошқалар. Мойли
экинлардан (кунгабоқар, соя, махсар) юқори ҳосил етиштириш
агротехнологияси бўйича тавсиялар. // Тошкент 2017. Б. 5-8.
2.
Анарбаев И.У. Республикамизда мойли экинларни етиштириш
истиқболлари. //Ўзбекистонда мойли ва толали екинларни етиштириш
ҳамда
уларнинг
маҳсулдорлигини
оширишга
қаратилган
янги
технологиялар” мавзусидаги республика илмий-амалий конферецсия
маърузалари асосидаги мақолалар тўплами. Тошкент. 2011. Б. 7-9.
3.
Дала тажрибаларини ўтказиш услублари. Тошкент, ЎзПИТИ, 2007.
146-б.
