Parameters of spike productivity in plants varieties Novosibirskaya 67 (N67), Saratovskaya 29 (S29), Puza-4 and «many-fl wered» line Skle 123-09 were assessed in two years with different weather conditions. It was shown that «many-fl wered» line Skle 123-09 is significa tly higher in the number of grains per spike and number of grains per spikelet than varieties N67, S29 and Puza-4, and that the expression of «manyfl wering» depends on the environmental conditions and the genetic background. It was shown that the «many-fl wering» is a genetic trait and is therefore workable. A study of hybrids F 2 С29 × Skle123-09, N67 × Skle 123-09, P-4 × Skle 123-09 isolated plants with fan-shaped cones and a high number of grains per spikelet as Skle 123-09 and having the best performance of other features as ear varieties recipients. The seeds of these plants will be used to secure «fl wering». Two-factor analysis of variance showed that the number of grains per spike knotted depends on growing conditions, genotype and their interaction. Variability of grains per spikelet in drought-resistant varieties of S29 and Puza-4 is mainly dependent on the genotype and, to a lesser extent, on the «genotype × environment» interaction. In variety N67 created for West Siberia, only genotype is a factor. The weight of a grain per ear primarily is primarily affected by «genotype × environment» (almost 60 %), while the influen e of «genotype × environmental» was half as strong. The variability of «masse of one grain» in F 2 hybrids (S29, P-4 × Skle123-09) is infl enced by environmental factors, genotype and their interplay. Genotype accounts for the highest impact (> 70 %). F 2 hybrids (N67 × Skle 123-09) share the greatest variability in the «genotype × environment» interaction (77 %).
1095�� 63100 clermontferrand cedex 2�� france Microsatellites�� or sim�le sequence re�eats (SSrs��� are ubiquitous in genomes of eu�aryotes�� including �lant genomes. The structure and location of SSr loci determine their �otential as molecular genetic mar�ers and may have im�act on the �otential function of microsatellites in im�ortant biological �rocesses. identification and study of the distribution of SSr loci in gene-rich regions of the bread wheat genome and develo�ment of novel SSr mar�ers based on these data are of �ractical interest�� being im�ortant for the study of bread wheat genome organization. Bread wheat Bac-clone sequences containing homoeologous WFZP genes that control s�i�elet develo�ment served as the base for the identification and localization of SSr loci in generich regions of chromosomes 2aS�� 2BS�� and 2DS. it was found that di-and trinucleotide motifs were �redominant. The most common dinucleotide motifs were aG and Ga/Tc. They were distributed in noncoding regions of genes�� trans�osable elements (TEs� and unannotated sequences. Most identified trinucleotide motifs were associated with trans�osable elements. Homoeologous SSr loci �икросателлиты�� или короткие тандемные (простые� повторы�� широко распространены в геномах эукариот�� вкл��ая геномы растений. Осо�енности строения и локализации микросателлитных локусов определя�т их потенциал в ка�естве молекулярно-генети�еских маркеров и могут оказыват�� влияние на предполагаемые функции микросателлитов в важных �иологи�еских процессах. Идентификация и изу�ение распределения микросателлитных локусов в �огатых генами районах генома мягкой пшеницы и разра�отка на их основе новых микросателлитных маркеров представля�т практи�еский интерес и важны для исследования организации генома мягкой пшеницы. �оследовател��ности Bac-клонов�� содержащие гомеологи�ные гены WFZP мягкой пшеницы Triticum aestivum l.�� контролиру�щие развитие колоса�� послужили основой для идентификации и локализации микросателлитных локусов в �огатых генами районах хромосом 2aS�� 2BS и 2DS. В изу�енных последовател��ностях наи�олее распространены ди-и тринуклеотидные микросателлитные повторы. Среди динуклеотидных мотивов прео�лада�т aG�� Ga/Tc; динуклеотидные повторы встре�а�тся в некодиру�щих о�ластях генов�� мо�ил��ных элементах и неаннотированных последовател��ностях ДН��. Бол��шая �аст�� тринуклеотидных повторов ассоциирована с мо�ил��ными генети�ескими элементами. О�наружено�� �то гомеологи�ные микросателлитные локусы располага�тся ли�о в генах�� ли�о в неаннотированных последовател��ностях ДН��. Сравнение структуры гомеологи�ных локусов показало�� �то дивергенция в них связана как с изме-нением �исла повторов�� так и с нуклеотидными заменами. Разра�отаны новые микросателлитные маркеры�� которые на генети�еских картах колокализованы с генами WFZP-A-B-D и могут испол��зоват��ся для маркирования этих генов в моле-кулярно-генети�еских исследованиях и в контролируемой маркерами селекции. ��л��евые слова�� микросателлитные локусы; SSr-маркеры; Bac-клон; мягкая пшеница; WFZP.e...
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