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The host-plant relationships of casebearer moths (Lepidoptera, Сoleophoridae) in family Polygonaceae on the territory of Volga-Ural Region

Authors: Anikin V. V.

Presented the taxa distribution of the family Polygonaceae species and the casebearer moths (Coleophoridae) on the basis of their host-plant relationships from the territory of the Volga-Ural region. In total were noted 8 species of casebearers with specialization on Polygonaceae. For buckwheat is noted the unique fauna of Coleophoridae which are mostly narrow oligophages, basically is based by tribe Augasmini (genus Augasma, Papyrosipha and Dumitrescumia). The casebearer moths from genus Ecebalia (tribe Casignetellini) for buckwheat − secondary.

Characteristics of reproductive features Hedysarum grandiflorum (Fabaceae) in southern of the Volga Uplands

Authors: Lavrentiev M. V.

In field seasons 2007–2014 studies have been conducted reproductive scope Hedysarum grandiflorum which grows in the southern of the Volga Upland within the administrative borders of the Saratov region. The features, variability and the plasticity of phytocoenotic external morphological characters of pollen, fruits and seeds of sweetvetch are studied. Potential and real seed productivity are identified. The optimal temperature of sprouting of seeds and the dependence of sprouting and energy of sprouting of seeds from the keeping period are detected.

Seed regeneration in some populations of Bulbocodium versicolor (Ker-Gawl.) Spreng. in Saratov region

Authors: Kulikova L. V., Petrova N. A., Shilova I. V., Serova L. A., Kashin A. S.

The article presents the results of the study of age structure and density of natural populations of Bulbocodium versicolor (Ker-Gawl.) Spreng. in the Saratov region. The populations of B. versicolor show internal density fluctuations, and differences in density may be 2–5-fold in some years. It was found that the majority of the studied populations of B. versicolor are either juvenile or in the transition from the juvenile stage to maturity and vice versa. Only one population is mature.

Features of seed reproduction of Fritillaria ruthenica Wikstr. in natural populations

Authors: Leonova A. A., Shilova I. V., Petrova N. A., Kostetsky O. V.

It was found that real seed productivity of Fritillaria ruthenica Wikstr. in natural populations of the Saratov region is up to 82%. Seed germination under laboratory conditions is rather high (93–100%), however, the damaging effect of phytophagous insects has a negative impact on seed regeneration in some populations.

The status of the population Adonis wolgensis in the Saratov region

Authors: Ermolaeva N. N., Shilova I. V., Petrova N. A., Kondrateva (Popova) A. O.

Studied two cenopopulation Adonis wolgensis Stev. ex DC. from Marx and Pug-achev districts of the Saratov region. The measured morphological characteristics of the individuals, defined: variability, spatial structure and ontogenetic range of populations, type of populations on the criterion of «Δ – ω».

Прошлое и современное распространение сосновых лесов на Южном Урале и в Башкирском Предуралье

Authors: Putenikhin V. P.

По литературным источникам кратко охарактеризованы история распространения и современная пространственная структура ареала сосны обыкновенной (Pinus sylvestris L.) на Южном Урале и в Башкирском Предуралье. Указаны основные области распространения сосновых лесов, различающиеся историей становления, географическим положением и лесоводственными особенностями.В пределах каждой такой области выделены отдельные районы обитания вида. 

К семенному возобновлению Сalophaca wolgarica (l. fil.) dc.) в естественных ценопопуляциях Волгоградской области

Authors: Shilova I. V., Demochko Y. A., Petrova N. A., Pastukhova A. I.

Описаны морфология и окраска семян Calophaca wolgarica (L. fil.) DC.). Определены размеры семян, масса 1000 шт. семян, семенная продуктивность растений, лабораторная всхожесть и энергия прорастания семян, собранных в природных популяцияx на территории Волгоградской области.

The diversity of the steppes of the Southern part of the Right bank of Saratov region

Authors: Reshetnikova T. B.

The features of the steppe vegetation in the southern part of the right bank of Saratov region. Studied and described the types of steppes and variations found on the site, showing their floristic composition and cenoticheskoe variety.

Distribution of broomrape qom and blednocvetkovoj in crops of sunflower broomrape and related weeds in the Saratov region

Authors: Sibikeeva Y. E., Borisov S. Y., Mikhaylov M. A.

The review of a condition of a problem in the last century is resulted. The distributions broomrape in the Saratov area for last 12 years on sunflower and weeds in sunflower crops was is studied. The dependence of widespread and intensity of severity broomrape from structure of areas under crops and expansion  of its racial and specific structure is shown.

Effects presowing seeds spring wheat

Authors: Starichkova N. I., Sorokovikova E. S., Kushneruk М. А., Antonyuk L. P.

Are cited data about influence of the microbiological preparations containing roststimuliruyushchy rizobakteriya, on efficiency of plants of spring-sown weak field. Good results are received at wheat cultivation in stressful conditions. At a slight deviation of climatic conditions from norm, positive influence of bacteriemic preparations on increase in a sign «the productive kustistost» statistically is not confirmed.

Ontogenesis and structure of tsenopopulation of the yarrow noble (Achillea nobilis L.) in the conditions of the Saratov region

Authors: Bulanaya M. V., Reshetnikova T. B.

Are submitted data on research of an ontogenesis and structure of a tsenopop- ulyation of Achillea nobilis L. in the conditions of the Saratov region.

Quality of Oxytropis spicata (Pall.) O. et B. Fedtsch. (Fabaceae) seeds from natural populations

Authors: Elizareva О. А., Kunakasova G. G.

Data on the study of laboratory germination of endemic species Oxytropis spicata (Fabaceae) seeds collected in 7 populations of the Bashkortostan Republic and Orenburg region are presented.

Hidrophilic plants of river Medvedica and their relation with phytophylous chironomids (Diptera, Chironomidae)

Authors: Oglezneva A. A., Durnova N. A.

Seven species of macrophytes (Sagittaria sagittifolia L., Sparganium erectum L., Typha angustifolia L., Butomus umbellatus L., Bolboschoenus maritimus (L.) Palla, Eleocharispalustris (L.) R. Br., Glyceria arundinaceae Kunth) were detected in Medvedica river, live tissues of which are populated by chironomids larvae. The most populated macrophyte is Sagitaria sagitifolia - 2298,65 ex/kg.

Vitality state cenopopulations of Hypericum perforatum in Saratov region

Authors: Parkhomenko V. M., Kashin A. S.

In this article authors write about the vital structure ofpopulations H. perforatum in the Saratov region. According to vitality of investigated cenopopulations most of them belong to prosperous type. Vitality of cenopopulations is retrogressing in the following range habitats: anthropogenic transformed - forest glades and forest edges - steppe -forest. On vital status of individuals influence weather conditions. The maximum decline in vitality occurred in populations of steppe habitats, and the minimum - on abandoned arable land, surrounded by forest plantations.

Characteristic of plant associations with the big stonecrop (Sedum maximum L.) in the Saratov region

Authors: Plastun V. O., Zabaluev A. P.

8 associations with Sedum maximum from different districts of Saratov region were studied. 76 species, 64 genera, 22 families of vascular plants were found. It was established, that associations are different in general among themselves. In the researched associations permanent herbs prevail.

Influence of conditions of cultivation and preseeding processing on the productive kustistost of spring-sown weak field

Authors: Starichkova N. I., Zlobina L. N.

Are cited data about influence of the microbiological preparations containing roststimulirnyushchy rizobakteriya, on efficiency of plants of spring-sown weak field. Good results are received at wheat cultivation in stressful conditions. At a slight deviation of climatic conditions from norm, positive influence of bacteriemic preparations on increase in a sign «the productive kustistost» statistically is not confirmed.

The morfological chacteristics of fruits and seeds of the South-ural Oxitropis uralensis(L.) Dc. species

Authors: Arslanova L. R., Maslova N. V.

A comparative analysis of morphometric characteristics of Oxytropis uralensis fruits and seeds from natural populations of the South Ural was conducted. There  was no a significant differences in the value of the coefficient of variation between the populations. However the studied populations of O. uralensis have significant differences between lenth of stem, thickness of fruit, width of abdominal and spinal partition, seeds width and thousand seed mass.

Broad-leaved forests of South Urals Reserve (distribution and structure characteristics)

Authors: Gorichev Y. P., Davydychev A. N.

Data on the phytocenosis distribution and structure and the stands of trees composition of some associations of broad-leaved forests of South Urals Reserve are presented.

Pollen anomalies in scots pine under different ecological conditions

Authors: Kalashnik N. A.

Pollen anomalies in Scots pine (Pinus sylvestris L.) were studied under different ecological conditions. The results obtained testified to an adverse effect of technogenic pollution on the grain quality in Scots pine. The comparison of anomaly/fertility values using χ2-criterion revealed the significant differences between the test plots located under contrasting ecological conditions. The cytological method applied is considered as a very sensitive one for the assessment of the influence of unfavorable factors on Scots pine ecosystems.

Heavy metals accumulation in different varieties of annual lupin in botanical garden

Authors: Kudrjashova V. I.

The work is devoted to the determination of heavy metals accumulation in different varieties of annual lupin according to the content of the given metals in soil.

The investigations of heavy metals were conducted on the following varieties of an annual lupin – Dikaf I, SN 40\9, Nemchinovskij 846, Zhemchug, Narrow–leaf 109. The botanical garden soils taken at the places of lupin growing have been also studied. As a result of our investigations it was established that the content of Pb, Zn,

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