Проведено изучение полевой устойчивости к желтой ржавчине сортов мировой коллекции октоплоидной тритикале различного происхождения. Рабо та выполнена на Дагестанской опытной станции ВИР. Большинство образцов октоплоидных тритикале в полевых условиях проявляют среднюю устойчивость (5-7 баллов) к желтой ржавчине-74,7%. Вы сокой имунностью (9-99 баллов) к данному патогену обладают 23,4% образцов и 2,9% образцов восприимчивы к этой болезни (1-3 балла). Наибольшей устой чивостью отличаются образцы октоплоидных тритикале из Швеции (29,0%) и Германии (25,0%). Образцы ЛД-779 из Московской обл., ЛВ-1 из Украины, 53 Kx(CxSt) из Швеции и Т294 из Германии сочетают устойчивость с хорошими показателями селекционно-ценных признаков. Ключевые слова: желтая ржавчина, тритикале, устойчивость, грибные болезни. Summary The study of field resistance to yellow rust varieties of triticale octoploid world collection of various origins.The work on Dages^tanskoy Research Station VIR. Most octoploid triticale samples under field conditions show high resistance (5-7 points) to yellow rust-74.7%. High-immune (9-99 points) to this pathogen have 23.4% o f the samples and 2.9% of the samples are susceptible to the disease (1-3 points). The highest resistance differ octoploid triticale samples from Sweden (29.0%) and Germany (25.0%). Samples LD-779 from Moscow reg., LV-1 from Ukraine, 53 Kt (ShSt) from Sweden and Germany T294 combine resistance with good breeding and valuable features.
In the article, a study of the conjugation of grain triticale selection-valuable traits was carried out in order to distinguish among them the samples that combine resistance to lodging with a number of other selection-valuable traits. According to the correlation analysis, we can say that selection-valuable traits (both productivity and resistance to fungal diseases) in most cases are positively associated with plant height and the length of the last internode. Therefore, it is necessary to search for sources of short-stemming, the expression of which does not worsen the manifestation of selectively valuable traits. In addition, it is important to select forms with a long ear culm segment. According to the correlation analysis carried out, selectively valuable traits (both productivity and resistance to fungal diseases) in most cases are positively associated with plant height. In this regard, it is necessary to search for sources of short-stemming, the expression of which does not worsen the manifestation of selectively valuable traits. Specimens with the optimal architectonics of the plant morphotype, capable of maximally mobilizing nutrients for a high yield of reproductive mass (grain) in comparison with vegetative (straw), are especially promising. A sign of productivity, the mass of grain per spike positively correlates with the mass of 1000 grains, the number of grains per spike, grain completeness and resistance to fungal diseases, and negatively with the grain size. The coarseness correlates positively with the weight of the ear, the weight of the grain and the completeness of the grain, and negatively with the percentage of the weight of the ear from the stem.
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