STUDY OF THE NET PHOTOSYNTHETIC PRODUCTIVITY AND THE CHLOROPHYLL “Α” CONTENT IN NEW COTTON VARIETIES SP-40 AND S-8294, AND THE REGIONALLY ADAPTED VARIETY XORAZM-127, DEPENDING ON PLANT DENSITY AND THE APPLICATION OF A GROWTH STIMULATOR.

Authors

  • Dj. X. Axmedov Author
  • M.O. Yakubova Author

Abstract

This article examines the essence of the photosynthesis process, the concept of net photosynthetic productivity (NPP), and its role in the cotton plant. It also presents an analysis of changes in net photosynthetic productivity under the influence of key agrotechnical factors, including plant density and the application of growth stimulators, across different treatment periods and developmental stages.

References

1. J.X.XUJAYEV O’SIMLIKLAR FIZIOLOGIYASI Toshkent — “Mehnat” — 2004. 72-73-pages.

2. Alimova Ra'no Abbasovna O'simliklar fizioiogiyasi va biokimyosi: Oliy o'quv yurtlari talabalari uchun o'quv qo'llanma. R. A. Alimova, M. T. Sagdiyev; (Mas id muharrir X.X.Kimsanboyev, TDAU o'simliklarni himoya qilish kafedrasi professori, b.f.d) O'zbekiston Respublikasi Oliy va o'rta maxsus ta'lim vazirligi.- T.: «Fan» nashriyoti, 2013. 35-bet, 36-40-pages.

3. R.N.Babayeva. Botanika va o‘simliklar fiziologiyasi. – T.: «Fan va texnologiya», 201. 71-72-pages.

4. B.O.BEKNAZAROV О‘SIMLIKLAR FIZIOLOGIYASI Toshkent - «Aloqachi» - 2009. 203-204-pages.

5. OʻzPITIning “Dala tajribalarini oʻtkazish uslublari” 2007

6. A.A. Nichiporovich. “Barg yuzasi tarozida tortish” 1961.

7*. Dunne, R. P. (1999). Spectrophotometric measurement of chlorophyll pigments: a comparison of conventional monochromators and a reverse optic diode array design. Marine chemistry, 66(3-4), 245-251.

8*. Environmental Sciences Section [ESS]. (1991). ESS Method 150.1.: Chlorophyll-Spectrophotometric.

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Published

2026-05-10