Cytotaxonomic studies in the genusJasione L. I.Jasione montana L.

Chromosome numbers of 46 samples referable to the speciesJasione montana L. were examined. The material originated from different localities in Portugal, France, the Netherlands, Germany, Switzerland, Austria, Czechoslovakia, Poland, and the Soviet Union. All the samples were found to be diploid, having 2n=12 chromosomes. The aneuploid number, 2n=14, is shown to be limited to the var.litoralis Fries. Polyploidy has not been observed.     

胡葱与洋葱、葱亲缘关系初探

Allium ascalonicum L,在我国的邦名比较混乱,而且它与洋葱、葱的亲缘关系不清。作者认为,它在我国的邦名应规范为胡葱,同时,从性状比较的角度研究胡葱与洋葱、葱之间的亲缘关系。结果表明,胡葱的植物学特征和生物学特性介于洋葱和葱之间。     

UeberLathyrus latifolius L. undL. silvestris L.

Ohne Zusammenfassung     

On the 75th anniversary of the birth of L. L. Kiselev

Chronicle

On the 75th anniversary of the birth of L. L. Kiselev     

Studies on the interspecific hybrids of Trigonella corniculata L., T. hamosa L. and T. cretica L.

Chromosome associations in the interspecific hybrids of Trigonella corniculata, T. hamosa and T. cretica have been studied. T. hamosa differs from T. corniculata and T. cretica by one translocation. No translocation was detected in the hybrid T. corniculata x T. cretica. These species have basically the same genomes.     

Aging in the lumbar spine. II. L1 and L2

The bodies of the first and second lumbar vertebrae, like those of L3 and L4, show a significant trend toward lowering and broadening with age. Superior, inferior, and midbody transverse breadths increase, but there is little or no increase in endplate "flaring" with age. There is essentially no change in the relationship between anterior and posterior heights, but as reported for L3 and L4, there is a sexual difference in the amount and type of wedging of the bodies of L1 and L2. Posterior wedging (posterior height less than anterior height) of these vertebrae is about twice as common in females as in males. Whites of both sexes show a statistically significant relationship between age and increased biconcavity of the endplates. Black females, but not the males, show a similar trend, especially in L1.     

Segregation of serological characters in the crossPhaseolus coccineus L. xPh. vulgaris L.

The segregation of a protein (designated as protein I) was studied in interspecific hybrids ofPhaseolus coccineus x Phaseolus vulgaris. A single locus difference is suggested similarly as in intraspecific hybrids.     

L.S. Vygotsky and the Theater

The article presents the analysis of L.S. Vygotsky's works dedicated to the theater arts and is organized according Vygotsky's different life and work stages. Meanwhile special attention is paid to the Gomel period during which a large number of reviews were written by Vygotsky and published in “Nash ponedel'nik” and “Polesskaia pravda” newspapers. Biographical facts are widely used in this analysis and help to clarify Vygotsky's interest in art. It is shown that even at the beginning of his oeuvre, he was interested not only in a range of problems in art, but also psychological problems related to art perception and creativeness. Vygotsky's usage of structural concept ideas about the peculiar properties of literary text composition are also explored. Vygotsky analyzes the socio-psychological mechanisms of theatrical art effect. Furthermore, those areas which are widely used by Vygotsky in determining the characteristics of cast reincarnation are examined. Special emphasis is placed on the different elements of the actor techniques (speech, movement, emotional expression, acting personality and etc.). Materials are widely used in this study and help identify the socio-cultural context that defined Vygotsky's values at different stages of his work, related to his drama criticism and his formation as a professional psychologist.     

Somatic Hybrids of the Forage Legumes Medicago sativa L. and M. falcata L.

Protoplasts isolated from embryogenic cell suspensions of tetraploidMedicago sativa cv. Europe (2n= 4? = 32) and M. falcata (2n=4? = 32) were fused using polyethylene glycol (PEG). Heterokaryonswere isolated by micromanipulation and cultured in the presenceof nurse protoplasts from albino or embryogenic cell suspensionsof M. sativa, to give free-floating embryos and embryogeniccalli. Ninety-nine plants were regenerated from somatic embryos.Fifteen of the plants exhibited leaf abnormalities and did notsurvive transfer from culture to the glasshouse. The remainingphenotypically normal plants were established ex vitro and floweredat maturity. Morphological and biochemical analyses confirmedthat 12 of the phenotypically normal plants were somatic hybrids.Morphological characteristics of the hybrids, including plantstature, internode length, leaf size, flower colour, and podshape, were intermediate compared with those of the purple floweredM. sativa and yellow flowered M. falcata parents. Flowers ofthe hybrids were yellow traced with purple-blue veins. Isoenzymebanding patterns for esterase showed bands additional to thoseof M. sativa and M. falcata. The chromosome complements of individualhybrids varied from (2n= 4? = 32) to 58.     

Somaclonal variation inLolium multiflorum L. andL. temulentum L.

Tiller-derived callus ofLolium multiflorum L. gave rise to 65 regenerants displaying variation in height, flowering time, chromosome number and alteration to the banding pattern of the isoenzyme superoxide dismutase. Plants were also regenerated from callus cultures initiated from immature embryos of the related inbreeding speciesLolium temulentum L. Progeny of the regenerated plants from this species displayed variation in height, flowering date, ear length and chlorophyll content.Abbreviations 2,4-D 2,4-dichlorophenoxyacetic acid - IAA indole-3-acetic acid - BAP 6-benzylaminopurine     

L.D.H. and L.D.H. isoenzymes of the intra-uterine secretions of the cow during the estrous cycle

Uterine secretions were collected from 20 mature cows during estrus (day 0), metestrus (day 5), diestrus (day 10) and proestrus (day-1). Lactate dehydrogenase (LDH) and LDH isoenzymes activity were evaluated. No significant cyclic variations of LDH activity was found in the uterine secretions while the mean of the enzyme activity was higher during the estrogenic period of the cycle. The relative activity of LDH-1, LDH-2 and LDH-3 isoenzymes were higher during proestrus and estrus whereas LDH-5 activity was more important during metestrus. The LDH-3 seems to have the higher relative activity in uterine secretions of the cow.     

Migrations of Leptophlebia vespertina L. and L. marginata L. (Ins.: Ephemeroptera) in the estuary of a coastal stream

Investigations carried out in a coastal stream flowing to the Northern Bothnian Sea (Ängerån, 63°35'N, 19°50'E) have shown a high drift rate of mayfly nymphs towards the coastal areas. The nymphal development takes place in the estuaries with low salinity (conductivity between 47 and 9800 μS; salinity between 0 and 4–5%₀). After the emergence (May/June) the adults fly from the coastal areas to lay their eggs in the stream biotope in the Ängerån. There thus appears to be a colonization cycle between the coastal stream and adjacent coastal areas. The migration movements of downstream drift and the compensatory upstream directed flight are interpreted as asurvival strategy of the species concerned.