The influence of agroecological and agrotechnological factors on the generative development of oilseed radish (Raphanus sativus var. oleifera Metzg.)

Y. Tsytsiura

Vinnytsia National Agrarian University, Faculty of Agronomy and Forestry,
Sonyachna street, 3, UA21008 Vinnytsia, Ukraine
Correspondence: yaroslavtsytsyura@ukr.net; yaroslav301974@gmail.com

Abstract:

During the eight-year research period, we determined the peculiarities and regularities of morphological (length and diameter) and anatomical (stem thickness) features of oilseed radish pods considering their location within the generative part of plants for different types of spatial structure of the inflorescence generated in agrocenosises of different densities. We carried out the analysis and statistical grouping of morphological features of oil radish pod in the full range of possible technological options of pre-sowing construction of its agrocenosises, as well as within the selected three zones (tiers) of inflorescence by the nature of variation and variability of morphoparameters pod, namely, lower, middle and upper. We described in detail the stages of pod formation (microstages ВВСН 69-87) considering features of its linear and radial growth, peculiarities of formation of general internal anatomical structure with analysis of mathematical and statistical regularities of changes in these parameters in accordance as per order of its placement within an inflorescence (separately main axis and system of lateral branches). We determined the optimum technological intervals for the construction of oilseed radish agrocenosises, which ensure the combination of appropriate levels of morphometry formation of its fruit elements with the predicted level of reproductive effort and seed productivity. We made a general assessment of the peculiarities of formation of pod technological effectiveness in terms of ease of threshing and possible losses of seeds depending on the complex of factors under study.

Key words:

inflorescence, layering, morphological characteristics, pod, Raphanus sativus var. oleifera Metzg., variability, variation

Oil content and fatty acid composition of seeds of some Lithuanian wild crucifer species

N. Maršalkienė¹, A. Sliesaravičius¹, B. Karpavičienė² and A. Dastikaitė¹

¹Department of Crop Science and Animal Husbandry. Lithuanian University of Agriculture,Studentų 11, Akademija, Kaunas distr. Lt-53067 Lithuania; e-mail: nijole.petraityte@delfi.lt
²Laboratory of economic botany. Institute of Botany. Zaliuju Ezeru g. 49,Lt-08406, Vilnius, Lithuania

Abstract:

Oil content and fatty acid composition were investigated in the following wild crucifer species during 2008: Nineteen samples of fanweed (Thlaspi arvense L.), eight samples of flixweed (Descurainia sophia (L.) Webb ex Prantl), 17 samples of wallflower mustard (Erysimum cheiranthoides L.), one sample of sea rocket (Cakile baltica Jord. ex Pobed.) and two samples of garlic mustard (Alliaria petiolata (M. Bieb.) Cavara et Grande). The greatest amount of oil was found in seeds of flixweed (32.2%) and wallflower mustard (30.6%). Seeds of garlic mustard contained the least amount of oil (15.8%). Fatty acids were dominated by unsaturated acids (oleic, linoleic and linolenic) in flixweed (71.4%), wallflower mustard (63.5%) and sea rocket (62.7%), by erucic acid in garlic mustard (49.3%) and fanweed (35.6%) seed oil. The seed oil of some investigated wild crucifer species could be suitable both for human consumption and industrial purposes.

Key words: