изменчивость

Some results of variation between population Delphinium pubiflorum (DC.) Turcz. ex Huth in Saratov region

Authors: Ermolaeva N. N., Kashin A. S., Petrova N. A., Shilova I. V.

Оценена межпопуляционная изменчивость растений трех ценопопуляций (ЦП) D. pubiflorum из Красноармейского, Хвалынского и Татищевского р-нов Саратовской обл. Они произрастают в довольно богатых во флористическом отношении травянисто-кустарниковых сообществах, значительно различающихся по видовому составу. Увлажнение в ЦП соответствует лугово-степному или сухо-луговому, умеренно-переменному.

Changeability and flexibility of some morphological parameters Hypericum perforatum (using the example of the Right-bank area of Saratov region)

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

The habitat conditions have a considerable influence on habitus of individuals. The most parameters of morfogenesis are flexible (plastic) enough. The Fertility of individuals reduces in the most xerophitic places. In the anthropogenic-tranfomed, upland habitats and in the forests the changeability of the most morphological parameters are less than in the steppers.

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.

Structure variability of some morphological parameters glandular sage (Salvia glutinosa l.) in the Botanic garden

Authors: Gladilina T. Y., Shilova I. V., Petrova N. A.

The results of the study of morphometric parameters sage glandular of Salvia glutinosa L. Four groups of system indicators. Most signs are stable; the number of side branches, the number of escapes. In the increasingly varied indicators such as the length of the inflorescence, the length of the stem leaves.

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».