Page 181 - Zbornik_Konf_2019

https://doi.org/10.15414/2019.9788055220703

4 International Scientific Conference Abstracts Book
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ASSESSMENT OF DROUGHT RESISTANCE AND ECONOMICALLY VALUABLE SIGNS OF
YIELD OF COLLECTION OF COTTON VARIETIES
Afet Mamedova, Ramiz Aliyev, Elchin Hajiyev

National Academy of Sciences of Azerbaijan, Institute of Genetic Resources,
Baku, Azerbaijan; E-mail: afet.m@mail.ru
Cotton is the raw material for the production of cotton fabrics. After treatment, cotton
seed hairs are used in medicine called cotton wool. Cottonseed oil is obtained from cotton
seeds. The leaves are used as raw materials for the production of citric and malic acids. The
plant is a valuable honey plant.
The aim of the work was to identify for breeding cotton varieties, which combine
drought resistance with positive indicators of economically valuable signs of yield.
The object of research was the collected samples of cotton (267 variety samples) of the
Institute of Genetic Resources of the National Academy of Sciences of Azerbaijan. The study of
the correlation between stress-resistance and economically valuable traits was performed
using the SPSS 16.0 program. Cluster analysis of the degree of stability was determined using
the UPGMA method of this program.
We have carried out an intra- and interspecific assessment of drought resistance of
cotton accessions belonging to G. hirsutum L. and G. barbadense L. species and identification of
the stress-resistant genotypes with the economically important traits were carried out for the
first time.
Highly resistant samples were isolated inside the species G. hirsutum (AP-347,
Karabakh-58, AP-16, AP-342 et al.) and G. barbadense (9732I, S-6035, 10964, Termez et al.) in
which there is no stress-depression of seed germination during stress.
Analysis of the percentage ratio for drought resistance in various accessions of cotton
revealed that G. barbadense species had higher resistance against the climate changing and
acclimatization in new unusual conditions comparing with G. hirsutum. Thus, the number of
cotton varieties that are highly resistant to drought for the species G. hirsutum, out of the total
number studied, was 9.1 %, for the species G. barbadense – 28.6 %.
For drought-resistant cotton varieties, the main economically valuable signs of yield
were studied. As a result of research, promising varieties of cotton have been identified for
breeding (Aspero, 5010-V, 5230-V, AP-154, S-6002, 6465-V et al.) combining stress-resistance
to drought with the main economically valuable traits.
The study of correlation between drought resistance and major economically valuable
traits in G. barbadense accessions, led to the conclusion of a positive correlation between the
drought resistance and flowering, seedlings and vegetation period, as well as a significant
positive correlation between drought resistance and vegetation period, between flowering
and vegetation period, number of cotton bolls and mass of raw cotton, and the mass of raw
cotton and weight of boxes.
Thus, as a result of research, promising varieties of cotton have been identified for
breeding combining stress-resistance to drought with the main economically valuable traits.
These samples are recommended for cultivation in the appropriate soil and climatic
conditions and can be used as donors in various breeding programs.

Keywords: Cotton, stress, drought, yield.

4 International Scientific Conference Agrobiodiversity Nutrition, Health and Quality of Human and Bees Life |181
th
September 11–13, 2019