ВЛИЯНИЕ ТЕМПЕРАРАТУРЫ НА ИЗМЕНЧИВОСТЬ ПРИЗНАКОВ МУЖСКОГО ГАМЕТОФИТА ПОТОМСТВ ВИРУСИНФИЦИРОВАННЫХ ГЕНОТИПОВ ТОМАТА
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Date
2023
Journal Title
Journal ISSN
Volume Title
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CEP USM
Abstract
A fost studiată acțiunea factorului termic asupra funcționalității gametofitului masculin la descendenții de tomate infectați cu virusul mozaicului tutunului (VMT) și virusul aspermiei tomatelor (VAT). S-a stabilit, că influența temperaturii înalte asupra gametofitului masculin la descendenții VMT/VAT provoacă modificarea caracterelor funcționale ale gametofitului masculin. Efectul produs este controlat în mare măsură de temperatura 78,1…81,5%(pentru viabilitatea polenului), iar variația dimensiunilor tuburilor polinice este determinată de temperatura și interacțiunea factorilor (75,6%). Analiza individuală a structurilor spectrelor de variație a indicilor gametofitului masculin pentru fiecare genotip a scos în evidență diferențe semnificative în sensibilitatea acestora la acțiunea factorilor ce cauzează variabilitatea, fapt ce a permis gruparea genotpurilor după reacția la stres, cât și prognoza răspunsului la etapa de sporofit. În baza datelor obținute au fost evidențiate genotipuri cu nivel de termorezistență
înaltă pentru includerea ulterioară a acestora în procesul ameliorativ.
The action of the thermal factor on the functionality of the male gametophyte in tomato progeny infected with tobacco mosaic virus (TMV) and tomato aspermia virus (TAV) was studied. It was established that the influence of high temperature on the male gametophyte in TMV/TAV offspring causes the modification of the functional characters of the male gametophyte. The effect produced is largely controlled by temperature 78.1...81.5% (for pollen viability), and the variation of pollen tubes sizes is determined by temperature and the interaction of factors (75.6%). The individual analysis of the structures of the variation spectra of the male gametophyte index for each genotype revealed significant differences in their sensitivity to the action of the factor that cause variability, a fact that allowed to the clustered of genotypes according to their reaction to stress, as well as the prediction of the sporophyte response to the stress. Based on the obtained data, genotypes with a high level of heat resistance were highlighted for their subsequent inclusion in the improvement process.
The action of the thermal factor on the functionality of the male gametophyte in tomato progeny infected with tobacco mosaic virus (TMV) and tomato aspermia virus (TAV) was studied. It was established that the influence of high temperature on the male gametophyte in TMV/TAV offspring causes the modification of the functional characters of the male gametophyte. The effect produced is largely controlled by temperature 78.1...81.5% (for pollen viability), and the variation of pollen tubes sizes is determined by temperature and the interaction of factors (75.6%). The individual analysis of the structures of the variation spectra of the male gametophyte index for each genotype revealed significant differences in their sensitivity to the action of the factor that cause variability, a fact that allowed to the clustered of genotypes according to their reaction to stress, as well as the prediction of the sporophyte response to the stress. Based on the obtained data, genotypes with a high level of heat resistance were highlighted for their subsequent inclusion in the improvement process.
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Keywords
tomate, virus, stres termic, polen, tuburi polinice, viabilitatea polenului, variabilitate, rezistență, tomato, virus, heat stress, pollen, pollen tubes, pollen viability, variability, resistance
Citation
САЛТАНОВИЧ, Татьяна, АНДРОНИК, Лариса, АНТОЧ, Людмила, БУЛДУМАК, Ана. Влияние темпераратуры на изменчивость признаков мужского гаметофита потомств вирусинфицированных генотипов томата . În: Studia Universitatis Moldaviae. Științe reale și ale naturii . 2023, nr.1 (171), Chișinău. CEP USM, 2023, pp.21-28 ISSN 1814-3237