MORPHOLOGICAL CHARACTERIZATION AND THE GERMINATING POTENTIAL OF TRIFOLIUM MONTANUM L. AND T. PANNONICUM JACQ. POLLEN
Journal Title: Analele Stiintifice ale Universitatii Alexandru Ioan Cuza din Iasi, Serie noua, Sectiunea II a. Biologie vegetala - Year 2009, Vol 55, Issue 1
Abstract
The paper presents the general morphological aspects of Trifolium montanum L. and T. pannonicum Jacq. pollen with the diagnosis value of the respective taxa. It also presents the variability of pollen germinating capacity in the two taxons from the Fabaceae family, according to the factor of glucidic concentration in the artificial germination environment. We have tested germination in nutritive mediums lacking glucidic elements and in mediums with different sucrose concentrations, until 350%. This paper presents the concentration of glucidic elements from mediums allowing pollen germination at minimum percentage, shows the sucrose concentrations for developing the germination process under best conditions and analyses the germination process in dynamics (after 3, 24, 48 and 72 hours since pollen inoculation in nutritive mediums). The obtained results may be correlated to the amplitude of the variability in pollen grain size, to the ecological plasticity typical of the two taxons, plasticity controlled by the genetic substratum typical of the two tightly related species. It was shown that the pollen germinating potential was different, being a species trait, with diagnosis value. The Trifolium montanum pollen having a higher germinating potential, it could be correlated to the vast spreading area of this species, which is represented in europe, caucasia, siberia, persia, america.the germinating potential of the Trifolium pannonicum pollen (with spreading area in europe and in north of northern of america), lower than of the other taxon, could be explained by the high polyploidy degree.
Authors and Affiliations
SILVICA PĂDUREANU
Keywords
Related Articles
- EP ID EP140220
- DOI -
- Views 75
- Downloads 0
ESSENTIAL OILS OF THYMUS COMOSUS HEUFF. EX GRISEB. ET SCHENK (LAMIACEAE) COLLECTED FROM DIFFERENT AREAS OF ROMANIA
The factors that determine the composition of the essential oil are numerous and sometimes it is difficult to distinguish since many of them are interdependent. From the category of these factors we can mention seasonal...
THE INFLUENCE OF SOME HEAVY METALS ON SEED GERMINATION AND SEEDLING GROWTH AT FESTUCA PRATENSIS
The paper presents the results of a study concerning the influence of different concentrations of Pb, Ni, and Cd on some physiological, biochemical and morphological indicators during the dynamic of the process of seed g...
MICROSPOROGENESIS AND THE MALE GAMETOPHYTE AT SOME TAXACEAE FAMILY TAXA
In this paper we point out the microsporogenesis and male gametophyte at some representatives of the Taxaceae family, Taxus L. and Torreya Arn. Both of them are dioecious plants. In Romania Taxus is cultivated and sponta...
PRELIMINARY ASPECTS REGARDING SOME PHYSICO-CHEMICAL AND BIOLOGICAL CHARACTERISTICS OF THE WATER BISTRIŢA RIVER (LOWER COURSE)
This paper aims at underlying some physico-chemical, chemical, and biological characteristics of the water in the Bistriţa River in the sector Piatra Neamţ – Podoleni. Field observations and physical – chemical and chemi...
THE CELLULAR STRUCTURE OF THE FOLIAR LIMBS OF SPONTANEOUS SEDUM TELEPHIUM SSP. MAXIMUM (L.) KROCK PLANTS HARVESTED FROM NATURE
We investigated structural aspects of cells of the Sedum telephium L. ssp. maximum (L.) Krock foliar limbs, plant that belongs to the Crassulaceae family. These plants were grown under natural conditions. Our research al...