Adaptive reaction of cotton accessions of G. hirsutum L. and G. barbadense L. species to drought stress
Adaptation, process of the adjustment of a plant to specific environmental conditions, is provided by physiological mechanisms (physiological adaptation), and at population level (species) by mechanisms of genetic variability, heredity and selection (genetic adaptation). Intraspecific and...
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Serbian Genetics Society
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doaj-93bfe09528fe42b7ad8309aa9e8b6dc02020-11-24T23:08:21ZengSerbian Genetics SocietyGenetika0534-00121820-60692015-01-0147261762610.2298/GENSR1502617M0534-00121502617MAdaptive reaction of cotton accessions of G. hirsutum L. and G. barbadense L. species to drought stressMammadova Afet0Aliyev Ramiz1Babayeva Sevda2Abbasov Mehraj3Genetic Resources Institute of National Academy of Sciences of Azerbaijan, Baku, AzerbaijanGenetic Resources Institute of National Academy of Sciences of Azerbaijan, Baku, AzerbaijanGenetic Resources Institute of National Academy of Sciences of Azerbaijan, Baku, AzerbaijanGenetic Resources Institute of National Academy of Sciences of Azerbaijan, Baku, Azerbaijan + Baku State University, AzerbaijanAdaptation, process of the adjustment of a plant to specific environmental conditions, is provided by physiological mechanisms (physiological adaptation), and at population level (species) by mechanisms of genetic variability, heredity and selection (genetic adaptation). Intraspecific and the interspecific physiological assessment of adaptation potential to drought stress was carried out on 267 collection accessions and varieties of a cotton (197 accessions of G. hirsutum L. and 70 of G. barbadense L.). Comparative study of the stress reaction of tested accessions to unfavorable environmental factors was carried out based on stress depression indices of viability of seeds in sucrose solution-imitating drought. As a result of the studies different sensitivity of plants to abiotic stress was determined. The amplitude of the changes of physiological parameter during stress allowed roughly divide cotton accessions within each species into groups by defining different degrees of comparative drought resistance of samples. Analysis of the percentage ratio of high drought resistant accessions within species, revealed differences between G. hirsutum L. and G. barbadense L. For the specie G. hirsutum L. percentage of accessions with high drought resistance was 9.1%, for specie G. barbadense L.-28.6%. G. barbadense L., in our view, is characterized by a greater potential for volatility and acclimatization to the new, unusual conditions, capable of better resisting the adverse effects of drought and has great promise for using in breeding. It was found that because of the stress in drought resistant varieties activation of RNA synthesis, increase of labile and decrease of stable DNA was observed which indicates an increase of the physiological liability and functional activity of the genetic apparatus. In susceptible varieties a reduction in the synthesis of RNA and DNA and displacement of DNA fraction ratio towards the stable were noted.http://www.doiserbia.nb.rs/img/doi/0534-0012/2015/0534-00121502617M.pdfcottonresistancestressdroughtphysiological parametersnucleic acids |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mammadova Afet Aliyev Ramiz Babayeva Sevda Abbasov Mehraj |
spellingShingle |
Mammadova Afet Aliyev Ramiz Babayeva Sevda Abbasov Mehraj Adaptive reaction of cotton accessions of G. hirsutum L. and G. barbadense L. species to drought stress Genetika cotton resistance stress drought physiological parameters nucleic acids |
author_facet |
Mammadova Afet Aliyev Ramiz Babayeva Sevda Abbasov Mehraj |
author_sort |
Mammadova Afet |
title |
Adaptive reaction of cotton accessions of G. hirsutum L. and G. barbadense L. species to drought stress |
title_short |
Adaptive reaction of cotton accessions of G. hirsutum L. and G. barbadense L. species to drought stress |
title_full |
Adaptive reaction of cotton accessions of G. hirsutum L. and G. barbadense L. species to drought stress |
title_fullStr |
Adaptive reaction of cotton accessions of G. hirsutum L. and G. barbadense L. species to drought stress |
title_full_unstemmed |
Adaptive reaction of cotton accessions of G. hirsutum L. and G. barbadense L. species to drought stress |
title_sort |
adaptive reaction of cotton accessions of g. hirsutum l. and g. barbadense l. species to drought stress |
publisher |
Serbian Genetics Society |
series |
Genetika |
issn |
0534-0012 1820-6069 |
publishDate |
2015-01-01 |
description |
Adaptation, process of the adjustment of a plant to specific environmental
conditions, is provided by physiological mechanisms (physiological
adaptation), and at population level (species) by mechanisms of genetic
variability, heredity and selection (genetic adaptation). Intraspecific and
the interspecific physiological assessment of adaptation potential to drought
stress was carried out on 267 collection accessions and varieties of a cotton
(197 accessions of G. hirsutum L. and 70 of G. barbadense L.). Comparative
study of the stress reaction of tested accessions to unfavorable
environmental factors was carried out based on stress depression indices of
viability of seeds in sucrose solution-imitating drought. As a result of the
studies different sensitivity of plants to abiotic stress was determined. The
amplitude of the changes of physiological parameter during stress allowed
roughly divide cotton accessions within each species into groups by defining
different degrees of comparative drought resistance of samples. Analysis of
the percentage ratio of high drought resistant accessions within species,
revealed differences between G. hirsutum L. and G. barbadense L. For the
specie G. hirsutum L. percentage of accessions with high drought resistance
was 9.1%, for specie G. barbadense L.-28.6%. G. barbadense L., in our view,
is characterized by a greater potential for volatility and acclimatization to
the new, unusual conditions, capable of better resisting the adverse effects
of drought and has great promise for using in breeding. It was found that
because of the stress in drought resistant varieties activation of RNA
synthesis, increase of labile and decrease of stable DNA was observed which
indicates an increase of the physiological liability and functional activity
of the genetic apparatus. In susceptible varieties a reduction in the
synthesis of RNA and DNA and displacement of DNA fraction ratio towards the
stable were noted. |
topic |
cotton resistance stress drought physiological parameters nucleic acids |
url |
http://www.doiserbia.nb.rs/img/doi/0534-0012/2015/0534-00121502617M.pdf |
work_keys_str_mv |
AT mammadovaafet adaptivereactionofcottonaccessionsofghirsutumlandgbarbadenselspeciestodroughtstress AT aliyevramiz adaptivereactionofcottonaccessionsofghirsutumlandgbarbadenselspeciestodroughtstress AT babayevasevda adaptivereactionofcottonaccessionsofghirsutumlandgbarbadenselspeciestodroughtstress AT abbasovmehraj adaptivereactionofcottonaccessionsofghirsutumlandgbarbadenselspeciestodroughtstress |
_version_ |
1725614805603057664 |