Pleiotropic Effects of Gibberellin Sensitive and Giberrellin Insensitive Dwarfing Genes in Bread Wheat of the Southern Step Region of the Black Sea

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dc.contributor.authorChebotar, Halyna O.
dc.contributor.authorChebotar, Sabina V.
dc.contributor.authorMotsnyi, I. I.
dc.contributor.authorЧеботарь, Сабина Витальевна
dc.contributor.authorЧеботар, Сабіна Віталіївна
dc.date.accessioned2017-10-25T07:29:44Z
dc.date.available2017-10-25T07:29:44Z
dc.date.issued2016
dc.description.abstractInvestigation of the pleiotropic effects of GA sensitive (Rht8) and GA insensitive (Rht B1 and Rht D1) winter bread wheat dwarfing genes and the gene that determines the response of plants to photoperiod— Ppd D1—were carried out for 3 years in the southern step region of the Black Sea bank on five different genetic backgrounds. It is shown that, in addition to direct effects on plant height, GA sensitive and GA insensitive dwarf ing genes have pleiotropic effects on all studied traits except the number of fertile spikelets. Presence of the dwarfing genes in the genotype of tall forms led to the decrease of stem and ear length, and, at the same time, to the increase of ear density. The number of spikelets per spike decreased due to sterile spikelets, whereas the number of fertile spikelets did not change. There was a significant increase in the number of grains per ear as a result of increasing of spikelets in ears. The number and weight of grains did not decrease, even though the plants were charac terized by a smaller number of productive tillers. The presence of Rht8x allele on genetic background of vari ety Stepnyak resulted in a significant decrease of plants productivity. However, in combination with Ppd D1a allele, plants with Rht8x increased the potential productivity and surpassed the parental form (Rht8x Ppd D1a). The presence of Rht Ble allele resulted in reduction of weight of kernels from the main ear and 1000 kernels weight, increase of l/h, and left the number of seeds per spikelet stable in comparison with Rht8x.uk
dc.identifier.citationCytology and Geneticsuk
dc.identifier.urihttps://dspace.onu.edu.ua/handle/123456789/11155
dc.language.isoenuk
dc.relation.ispartofseries;Vol. 50, № 1.
dc.subjectwinter bread wheatuk
dc.subjectdwarfing genesuk
dc.subjectphotoperiod sensitivity genesuk
dc.subjectquantitative traitsuk
dc.titlePleiotropic Effects of Gibberellin Sensitive and Giberrellin Insensitive Dwarfing Genes in Bread Wheat of the Southern Step Region of the Black Seauk
dc.typeArticleuk
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