Actual problems of modern science, education and training


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Х ± m

σ

v

Х ± m

σ

v

Х ± m

σ

V

1

2

3

4

5

6

7

8

9

10

11

2

2018

6,1±0,10

0.81

13.44

39.1±0.41

2.64

7.08

35,29±0.24

1,91

2,91

3

2019

6,3±0,13

0.7

11.21

40.0±0.67

3.82

11.85

35,5±0,31

1,82

3,24

4

2020

6,1±0,09

0.63

12.05

39.0±0.62

2.97

8.01

34,41±0,22

1,25

2,52

5

Average

6,33±0,11

0.73

12.62

39.3±0.56

3.33

8.28

34,66±0,14

0,92

2,67

According to the data in Table 1, the weight of cotton in a boll of the variety “Khurma” is 6.0 g in 2018, 6.3 g in 2019 and 6.1 g in 2020. As it is revealed, that in 2020, compared to 2018, the average indicator of this sign fluctuated around 0.3 g.
Three-year data on fiber output showed average 39.1%. Over the research years, the indicators of this sign fluctuated between 40.0 and 39.0%. Hence, this indicator mean the preservation of stability in the genotypes of the variety.
The fluctuation of the indicator of fiber length between 35.1 and 35.5 mm. This means, that abrupt changes weren’t observed and stability was achieved on this indicator.
The stem of the variety “Khurma” has a compact form and have been practically identified to be effective when planted in double furrow in different soil-climatic conditions of Khorezm region.
It has been proved, that the “Khurma” variety of cotton can be used as a initial material in future in scientific researches on creation of new cotton lines and varieties suitable for soil and climatic conditions of Khorezm region and suitable for double furrow planting.

References:


[1]. Fashion United. World statistics of the fashion industry. https://fashionunited.com/global-fashion-industrystatistics/, 2019
[2]. https://review.uz/post/xlopkovaya-konyunktura
[3]. Vura V., Larrea K., Bermudez S. World Market Report: Cotton. Series of platforms for sustainable goods, 2019
[4]. https://xs.uz/uzkr/post/pakhta-majdonlari-215-ming-gektar-qisqartirildi-nega
[5]. Linghe Z. et al. History and current research on the USDA-ARS cotton breeding program in Stoneville, Massachusetts. Breeding and genetics. Cotton Science Journal. 2018. S. 24-35.
[6]. Kammacher P., Polsson C. Surla chromosome conjugation guea’un Gossypium tetraploide synthetigue // C. R. Asad. So. Paris, 1966. -V. 262, -№ 16. - S. 1718-1720 [7]. Wendel J.F. and R.K. Kron. Polyploidy and the evolutionary history of cotton. Add. Agron. 78. 2003. -p.139-186.
[8]. Endriziy I.E., Turkotte E.L., Kokhel R.I. Genetics, Cytology and Evolution of Gossipium // Advances in Genetics, 1985.-V.23.- P.271-365.
[9]. Arutyunova L.G. Interspecific hybridization in the genus Gossypium L. Issues of genetics, selection and seed production of cotton. - Tashkent, 1960. -67-70 p.; Arutyunova L.G. Pulatov M. Interspecific hybridization is a source of creating initial material for selection and replenishment of the cotton gene pool // Genetics, breeding and seed production of cotton and alfalfa. Tashkent, 1989. -S. 43-50. (Russian)
[10]. Muratov A., Sodikov H.R. Correlation of changes of number of chromosomes and crossing ability interspecific hybrids of cotton // Journal of cotton and grain growing. Tashkent, 1999. - No. 4. - B. 26-27. (Uzbek)
[11]. Namozov Sh.E., Babaev S.G. The effectiveness of intensive interspecific hybridization in cotton breeding. - Tashkent: "Nison-Noshir", 2014.- 56-179 p. 7. (Russian).


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