☰ Contents · Biology (Cytology and genetics)

Biotechnology and achievements of Uzbek scientists

Lessons 66–67 · 2 lessons · A. Zikiryayev, A. To‘xtayev, I. Azimov, N. Sonin. Biology. Basics of Cytology and Genetics, Grade 9, revised and expanded 5th edition. “Yangiyul Poligraph Service”, Tashkent, 2019
67

Achievements of Uzbek scientists in biology and selection

Textbook: pp. 184–186
GoalKnow the main achievements and fields of Uzbekistan’s scientists in biology and selection.
New words
cotton selection · g‘o‘za seleksiyasiwilt-resistant variety · viltga chidamli navgenetic engineering · genetik injeneriyaKarabair breed · qorabayir zoti
Explanation

According to the textbook, scholars such as Abu Rayhan Beruni (plants, medicinal substances), Abu Ali ibn Sino (medicine) and Zahiriddin Muhammad Babur (descriptions of plants and animals) contributed to the development of biology. Modern scientists have worked in many fields: botany — Q. Zokirov, A. Muzaffarov; zoology — T. Zokhidov, A. Muhammadiyev, J. Azimov; biochemistry and endocrinology — Yo. Turakulov, B. Tashmukhamedov; genetics — J. Musayev, A. Abdukarimov; genetic engineering and biotechnology — I. Abdurakhmonov and others; flora and geobotany — K. Tojiboyev, O‘. Allanazarova. In cotton selection S. Mirakhmedov used a wild-cotton gene to create the wilt-resistant “Tashkent-1, -2, -3” varieties, and N. Nazirov and O. Jalilov created “AN-402”, “Samarkand-3” and “Yulduz”; the textbook notes that I. Abdurakhmonov’s group created the “Porloq” varieties using genetic engineering methods. The wheat varieties “Ulugbek-600” and “Sanzor”, grape (“Rizamat”), apple (“Namangan olmasi”), peach and potato varieties and the Karabair horse breed are also products of Uzbek breeders and folk selection. In microbiology the work of A. Muzaffarov (the alga Chlorella and cleaning of water bodies) and M. Mavloniy (yeast technology) is mentioned.

Worked examples
Mirakhmedov created the “Tashkent” varieties: Tashkent-1, -2, -3 (3 varieties). Nazirov and Jalilov: AN-402, Samarkand-3, Yulduz (3 varieties). In total 3 + 3 = 6 varieties.
A wilt-resistant variety yields even in a field infected by wilt: the resistance gene of wild cotton passes to cultivated cotton by crossing.
Class activity

“Scientist card”. Choose one scientist or variety (for example “Tashkent-1” or the Karabair horse) and make a card: field, what was created, why it matters. Use the textbook and the library and check the facts.

Practice
1
Who created the wilt-resistant “Tashkent” cotton varieties?
2
What is Karabair?
3
Mirakhmedov created 3 varieties and Nazirov with Jalilov 3. How many varieties in total?
4
Why is a wilt-resistant variety important for a farmer?