Science and Education in Karakalpakstan issn 2181-9203 Science Magazine chief editor

 
Kalit so'zlar: 
Qoraqalpog'iston, gelmint, gelmintoz, qo'y, nematoda, invaziya ekstensivligi, 
invaziya intensivligi. 
Ключевые слова:
Каракалпакстан, гельминт, гельминтоз, овцы, нематоды, 
экстенсивность инвазии, интенсивность инвазии. 

---

Science and Education in Karakalpakstan. 2023 №2/1 ISSN 2181-9203 
7 
HEREDITY AND VARIABILITY OF ONE STEM WEIGHT IN F
2
 PLANTS OF GOOSE 
VARIETIES OF THE G.HIRSUTUM L.GENUS 
 
Absattarov N.A., Zarlykov A.Sh. 
Karakalpakstan Institute of Agriculture and Agro-Technology 
 
Summary: 
This article discusses the most important agricultural indicators of cotton, cotton 
weight, the main components of plant productivity, as well as the main factors determining yield. 
Keywords: 
Cotton, economic indicators, cotton weight, plant yield, components, yield, main 
factors. 
 
INTRODUCTION. 
Most of the economically valuable traits of cotton have a complex structure, and this 
complexity depends on a number of structural parameters. For example, economic indicators - 
cotton weight per bag, fiber yield, fiber length and several quality indicators are the main factors. 
However, some varieties are genotypically and phenotypically very diverse, and the level of 
the limit (minimum and maximum range of indicators) has a very high indicator. This creates 
difficulties in production by causing several problems. As a result, farmers cannot fully satisfy their 
demands. The main reason for this is that the characters do not have a certain balance. Violation of 
the balance of signs leads to a sharp drop in yield and quality [2, 3, 4]. 
One of the most important economic indicators of cotton is the weight of cotton in one boll. 
Cotton weight per bag is one of the main components of plant productivity and is one of the main 
factors that create productivity. Therefore, special attention is paid to studying the manifestation, 
heredity and variability of this trait in genetic and selection studies. 
Studying this sign is a very difficult and responsible task. Because the limit (minimum and 
maximum range of indicators) of the weight of cotton in a bud opened in one plant is very high, 
which makes the analysis difficult. However, this weight gain only serves to increase the weight of 
the crop. 
In the scientific literature [1], it is noted that the weight of cotton in one bag is relatively less 
variable in environmental conditions. 
Cotton weight in one bag of G.hirsutum L. cotton cultivars participated in our experiments 
was 6 in AN-Boyovut-2, S-6524, Namangan-77, Dehqanbob and AN-130 varieties picked from the 
parent nursery, respectively. 6,0 g., 5.6 g., 6.0 g., 5.8 g. and 6.3 g. formed 
In our research, the extent of variation in the weight of cotton per boll was studied in AN-
Boyovut-2, S-6524, Namangan-77, Dehqonbob and AN-130 varieties and in combinations of their 6 
reciprocal F
2
hybrids. The scale of variation for this character occupied 4 classes in AN-Boyovut-2, 
S-6524 and Dehkanbob varieties, and 5 classes in Namangan-77 and AN-130 varieties. The highest 
percentage of plants is 5.1-5.5 g in AN-Boyovut-2 and Dehkanbob varieties, 4.6-5.0 g in S-6524 
and Namangan-77 varieties, 6.1-6 in AN-130 variety, 5 g. was noted in indicative modal classes. 
The highest marginal class index of cotton varieties is 5.6-6.0 g in the S-6524 variety. and plants 
belonging to this class equaled 16.7%. AN-Boyovut-2, Namangan-77 and Dehkanbob varieties have 
the highest edge class index of 6.1-6.5 g. and plants belonging to this class were 10.0%, 16.7% and 
20.0%, respectively. AN-130 variety had the highest edge class indicator (7.1-7.5 g.) was superior 
to other varieties, and it was observed that the plants belonging to this class were 6.7%. The 
coefficient of variation of the sign in the varieties was 8.27-9.71%. This indicates that the studied 
character is less variable in all varieties (Table). 

---