Little is known about the best management systems for seed production of Italian ryegrass. The main objective of this study was to determine the influence of management systems on the first-year seed ...crop grown under various nitrogen fertilization (0, 60, 120 and 180 kg ha−1). Management systems of single-purpose crops were with (SeedPGR-crop) and without (Seed-crop) plant growth regulator application. The dual-purpose crops incorporated early spring forage cut during stem elongation (EF-seed-crop) and late cut at the onset of heading (LF-seed-crop) followed by seed harvest. Compared to the single-purpose crops, the dual purpose-crops shattered much less seeds but still yielded less because their plants had lower number of visible nodes on stems, shorter ears, fewer spikelets per ear, fewer flowers per spikelet in various ear sections and lighter seeds. Despite similar lodging incidence, the SeedPGR-crop produced relatively small, but significantly larger seed yield than the Seed-crop because plants in the SeedPGR-crop had shorter stems with fewer vegetative tillers, and shattered seeds slightly less. Nitrogen fertilization consistently improved seed yields in all management systems regardless of associated increases in lodging and seed shedding. These yield increments were mainly associated with the increased number of early- and late-formed reproductive tillers, and partly due to improved number of florets per spikelet and slightly heavier seed in early-formed reproductive ears. In spite of larger seed losses through shattering, the single-purpose crops largely out-yielded and had higher seed germination than the dual-purpose crops at all nitrogen fertilization rates, with maximized yields produced in the SeedPGR-crop.
The main focus of our study was to investigate differences in nutritional (dry matter, soluble solids content, total acidity and pH value) and bioactive values (ascorbic acid, total anthocyanins, ...total phenols, and non-flavonoids content) of wild grown raspberry (Rubus idaeus) and blackberry (Rubus discolor) genotypes harvested from native populations in Croatia. The average total acidity ranged from 0.93 to 1.72% in R. discolor and 1.57 to 1.91% in R. idaeus. Ascorbic acid was found between 22.34 mg and 45.00 mg 100 g⁻¹ in R. idaeus, while it was between 30.64 mg and 33.09 mg 100 g⁻¹ in R. discolor genotypes. A great variability in total anthocyanins was detected in roatian wild blackberry and raspberry genotypes, ranging from 2,226 to 2,367 mg kg⁻¹ for blackberries and 279 to 582 mg kg⁻¹ for raspberries, indicating wild blackberries are particularly rich in anthocyanins. On the basis of these results, it can be concluded that investigated wild growing fruit species have a great potential in nutritive research, as well as in biodiversity research. It is necessary to carry out further investigation and evaluation of wild growing fruit species to utilize them in the most appropriate way, as well as conservation of interesting accessions in the gene banks.
Plantings surrounding kindergartens are an integral part of urban green spaces. These open areas play a very important role in the lives of children, in their development, their eating habits, and ...environmental awareness. For this reason, it is extremely important to select adequate plant species, which are not dangerous for the children. There are 10 public and 9 private preschool institutions in the entire area of the two Novi Zagreb (East and West) city districts. Only public kindergartens have been included in this research. The aim was to determine the size of green open space surrounding public kindergartens, analyse woody plants on site, determine the taxonomic affiliation of plant species, and detect the presence of poisonous and allergenic plant taxa. In green space surrounding kindergartens in the Novi Zagreb – East city district, 49 taxa of trees, and 18 taxa of shrubs and woody climbers from a total of 22 plant families have been identified. Similary, in the Novi Zagreb – West city district, 49 taxa of trees, and 24 taxa of shrubs and woody climbers from a total of 26 plant families have been determined in kindergarten plantings. A total of 32 poisonous taxa, and 36 allergenic taxa have been catalogued in the Novi Zagreb – East city district, while a total of 34 poisonous taxa, and 42 allergenic taxa have been listed in the Novi Zagreb – West city district. The most poisonous species were: Taxus baccata, Prunus laurocerasus and Sambucus nigra. The species with the highest allergenic potential were: Thuja occidentalis, Betula pendula and Acer platanoides.
Plant breeding as an important discipline in agriculture started in Croatia during the last decades of XIX century at several institutions and farms, but was mainly focused on arable grains, but to ...less extent to fodder, and other crops. The efforts in the research, collecting and evaluation of genetic resources of fodder crops started in the second half of XX century, but were interrupted and ceased by the war in 1990-ies, with a part of material being lost. The activities started almost from scratch by establishing the Croatian Gene Bank in early 1990ties that existed only for few years. A new National Plant Gene Bank was established in 2004 as a network working in synergy with the SEEDNet programme, and was directed by National Plant Genetic Resources Programme based on the valid international treaties on biodiversity, and conducted according to good practice in genetic resources maintenance and research, with the support of the Ministry of Agriculture and EU funds. The paper presents the short outline of the research of the genetic resources of fodder crops.
Red clover, although primarily used for dairy cow feeding, can also repair soil structure, fix atmospheric nitrogen and prevent soil erosion. Until recently, the traditional cultivation of red clover ...in Croatia prevailed in suitable habitats. Abandoning of agricultural production is the reason of meadows succession process which can cause genetic erosion and threatens the survival of local population of red clover. Determining of sites according to their ecogeographical characteristics could help to improve the direction of action aimed at conservation of biological diversity of species in its natural habitats as well as the preservation of genetic resources and their use in breeding purposes. The aim of this research was to classify the sites of natural habitats of red clover local populations (under extensive agricultural production) in north-western part of Croatia on the basis of their ecogeographical characteristics. Data of geographical, pedological and climatological characteristics and floristic composition were collected at 18 sites and subjected to multivariate analysis. The main differences among sites were detected in geographical, pedological and climatological characteristics. Floristic structure of investigated sites were consisting of 151 plant species, including a large number of species of ruderal vegetation.
The Genus Fragaria in Croatia Dujmović Purgar, Dubravka; Duralija, Boris; Vokurka, Aleš ...
Erwerbsobstbau,
09/2017, Letnik:
59, Številka:
3
Journal Article
Only three native species of genus
Fragaria
(
F. moschata, F. vesca
and
F. viridis
) are recorded in three regions of Croatia. These species as well as many of their hybrids, are, or once were, ...cultivated for their edible fruits. The majority of cultivated strawberries in Europe belong to garden strawberries
F.
x
ananassa
(hybrids of
F. chiloensis
and
F. virginiana
). The most expanded wild strawberry species in Croatia is a woodland strawberry (
F. vesca
) whose berries are gathered seasonally as wild edible fruits. They often contain higher amount of nutrients and bioactive compounds in comparison to cultivated varieties. The research on the genus
Fragaria
species distribution in Croatia has not been carried out, and so is the case with many others wild growing fruit species in Croatia. By summing up a number of individual citations and observations, it is possible to get a perspective regarding the current state of their distribution.
Rainfall accompanied with winds favour lodging of Italian ryegrass (Lolium multiflorum Lam.). Thus, the main objective was to determine the changes in seed yield and quality resulting from lodging of ...Italian ryegrass crop grown under various nitrogen (N) fertilization rates. Nitrogen fertilization consistently increased lodging score and seed moisture content at harvest. The onset of considerable lodging (>50%) was observed before crop heading at the highest N fertilization, while delayed lodging occurred at lower N fertilization rates. Seed yield decreased at the highest N rate. In spite of increased lodging score, the 1000-seed weight tended to increase with higher N fertilization rates, which was not found for seed germination.
Invasive plant species (IAS), with their numerous negative ecological, health, and economic impacts, represent one of the greatest conservation challenges in the world. Reducing the negative impacts ...and potentially exploiting the biomass of these plant species can significantly contribute to sustainable management, protect biodiversity, and create a healthy environment. Therefore, the main objective of this study was to evaluate the nutritional potential, phytochemical status, and antioxidant capacity of nine alien invasive plant species: Abutilon theophrasti, Amaranthus retroflexus, Ambrosia artemisiifolia, Datura stramonium, Erigeron annuus, Galinsoga ciliata, Reynoutria japonica, Solidago gigantea, and Sorghum halepense. Multivariate statistical methods such as cluster and PCA were performed to determine possible connections and correlations among selected IAS depending on the phytochemical content. According to the obtained results, R. japonica was notable with the highest content of vitamin C (38.46 mg/100 g FW); while E. annuus (1365.92 mg GAE/100 g FW) showed the highest values of total polyphenolic compounds. A. retroflexus was characterized by the highest content of total chlorophylls (0.26 mg/g) and antioxidant capacity (2221.97 µmol TE/kg). Therefore, it can be concluded that the selected IAS represent nutrient-rich plant material with significant potential for the recovering of bioactive compounds.
The green infrastructure of Zagreb’s Lower Town is made up of row-planted trees and green spaces within blocks of buildings. All schools are surrounded by green spaces that have a positive impact on ...the environment. Although most green spaces contribute to improving the quality of life, they also contain toxic and allergenic species which are potentially hazardous, particularly to children. This paper aims to make an inventory of plant species in the environment of primary schools in Zagreb’s Lower Town district, and to determine the presence of toxic and allergenic species. The field research was conducted from March to the end of May 2021 at 7 primary school locations. 13 either annual or biennial plant families were catalogued. In total, 34 species of herbaceous perennials and geophytes, and 36 species of trees from 17 plant families were listed. A total of 38 species of shrubs and climbers were found. Also, a total of 35 poisonous and 28 allergenic plant taxa are planted in the green spaces surrounding primary schools. The most common poisonous species found are
and
, and
, a highly poisonous species, was also found. No moderately poisonous species have been found at all. As far as allergenic species are concerned, school environments are dominated by those that produce low and moderate levels of pollen concentration in the air. Species that produce high levels of pollen concentration (e.g.,
,
, etc.) are the least represented ones, while species that produce a very high concentration of pollen have not been recorded in any of the localities.
The main focus of our study was to investigate differences in nutritional (dry matter, soluble solids content, total acidity and pH value) and bioactive values (ascorbic acid, total anthocyanins, ...total phenols, and non-flavonoids content) of wild grown raspberry ( Rubus idaeus ) and blackberry ( Rubus discolor ) genotypes harvested from native populations in Croatia. The average total acidity ranged from 0.93 to 1.72% in R. discolor and 1.57 to 1.91% in R. idaeus . Ascorbic acid was found between 22.34 mg and 45.00 mg 100 g −1 in R. idaeus , while it was between 30.64 mg and 33.09 mg 100 g −1 in R. discolor genotypes. A great variability in total anthocyanins was detected in Croatian wild blackberry and raspberry genotypes, ranging from 2,226 to 2,367 mg kg −1 for blackberries and 279 to 582 mg kg −1 for raspberries, indicating wild blackberries are particularly rich in anthocyanins. On the basis of these results, it can be concluded that investigated wild growing fruit species have a great potential in nutritive research, as well as in biodiversity research. It is necessary to carry out further investigation and evaluation of wild growing fruit species to utilize them in the most appropriate way, as well as conservation of interesting accessions in the gene banks.
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