Iskanje po katalogu digitalne knjižnice

Opis: This study explores the feasibility of an automated sensor system for precise plant protection product application in plum orchards, aiming to address issues related to inefficient spraying practices, environmental pollution, and reduced crop quality associated with traditional training systems. The research focuses on detecting tree canopy presence, evaluating electromagnetic valve actuation in different plum training systems, and optimizing plant protection product usage. Sensor-based spraying demonstrates its potential to improve operational efficiency, reduce product losses, and foster environmentally responsible agricultural practices, contributing to the broader field of precision agriculture. For the selected scene, the results show the possibility of a substantial savings of 71.37%, 47.17%, 58.59%, and 55.06% for the One-axis, Bi-axis, UFO, and Combine systems, respectively. Implementing this technology can potentially lead to significant improvements in plum orchard operations while minimizing the industry’s ecological impact on the environment.
Ključne besede: sensors, spraying application control, target-oriented spray, plum orchard, training systems
Objavljeno v DKUM: 08.08.2025; Ogledov: 0; Prenosov: 2
Povezava na datoteko

Opis: Apples (Malus domestica) and plums (Prunus domestica) are important fruit crops belonging to the Rosaceae family. The edible parts of fruits and seeds contain phytochemicals; however, the seeds are rich in cyanogenic glycosides (CNGs), which release toxic hydrogen cyanide (HCN) upon the loss of plant cell integrity. This review aims to explore the quantitative and qualitative CNG profiles in apples and plums, focusing on their distribution in different parts of the fruit, changes during fruit development, and environmental impacts on their biosynthesis. It also discusses the intricate dynamics of CNGs in processed fruits and waste-derived products and the effects of the processing methods on CNG content. There is considerable variation in the CNG content of fruit crops, as well as in its distribution in fruit parts other than seeds and shifts during fruit maturation. Although several studies have attempted to explain this variability by the influence of cultivars and exogenous factors, there is insufficient evidence to draw reliable conclusions. Furthermore, due to the lack of studies, the dynamics of CNGs during the storage of fresh or preserved fruit remains unaddressed. In the context of reusing plum stones from waste to produce distillates, it is recommended to monitor the HCN content in the products during storage, as it can increase significantly over time. Processing methods influence CNG levels, with strategies like seed separation, soaking, and microwave heating showing promise in reducing cyanide (CN−) presence. The insights from this review will provide direction for future detailed research.
Ključne besede: apple, byproducts, cyanogenic glycosides, HCN, plum
Objavljeno v DKUM: 17.04.2025; Ogledov: 0; Prenosov: 6
Povezava na datoteko

Opis: Slovenia has a unique blend of climatic, soil, geographic and historical factors that fostered a rich tradition of plum cultivation and utilization. This study was set up to achieve following objectives: 1. assess the genetic diversity of 124 accessions of the three Prunus species (P. domestica L., P. cerasifera Ehrh., and P. spinosa L.); explore the possible contribution of P. cerasifera and P. spinosa to the ancestry of P. domestica; examine the genetic relationships and variability among the prevalent P. domestica material distributed in Slovenia. A combination of genetic markers, including 11 SSRs (UDP96-005, BPPCT034, EMPAS12, UCD-CH17, EMPAS06, EMPAS11, EMPAS14, BPPCT014, BPPCT025, CPSCT026 and CPPCT006) and three universal cpDNA markers (HK, K1K2 and VL), were chosen alongside flow cytometry. The analysis identified ten cpDNA haplotypes, which were grouped into three clusters using Unweighted Neighbor-Joining (NJ) analysis. All 11 SSR primer pairs exhibited polymorphism, revealing 116 unique genotypes and a total of 328 alleles, indicating considerable diversity with an average of 29.82 alleles per locus. Bayesian analysis distinguished two ancestral populations across all analyzed species. Principal Coordinate Analysis (PCoA) reflected the clustering observed in the Bayesian analysis. When analyzing individual set of P. domestica material, Bayesian analysis also distinguished two ancestral populations across, with PCoA confirming the results of Bayesian analysis. The NJ analysis categorized 71 P. domestica accessions into three clusters with numerous subgroups, reflecting a high genetic diversity. The majority of accessions aligned with traditional pomological groups, such as common prunes, mirabelle plums and greengages. Genetic diversity parameters were analyzed for the 42 diploid P. cerasifera genotypes. A relatively high diversity levels were found, resulting in 135 alleles, with high average values for alleles per locus (10.38), effective number of alleles (Ne = 5.22), expected heterozygosity (He = 0.77), observed heterozygosity (Ho = 0.64) and PIC value (0.754). In addition, 32 private alleles were found in 20 accessions. Bayesian analysis of the P. cerasifera material revealed three ancestral populations, corroborated by Principal Coordinate Analysis, while an NJ analysis grouped the accessions into three clusters based on the origin of the accession. This study identified valuable local landraces within the P. domestica pool, including traditional prunes or Bluish plums, which are of great genetic interest. Furthermore, the integration of complementary methods facilitated the differentiation of the three species and provided insights into the origin of plum. The findings will be crucial in comprehending the diversity of Slovenian plum germplasm, improving conservation efforts, recovering local genotypes and enriching existing collections of plant genetic resources.
Ključne besede: Prunus spp., plum, genetic resources, genetic diversity, genetic structure, cpDNA, SSR
Objavljeno v DKUM: 24.07.2024; Ogledov: 160; Prenosov: 100
Celotno besedilo (12,26 MB)