Uticaj suše na razvoj klijanaca kukuruza
| Autor: | Dragana Miladinović, Siniša Jocić, Igor Balalić, Ana Marjanović-Jeromela, Sandra Cvejić, Velimir Radić |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
seedling development
0106 biological sciences lcsh:Biotechnology Soil Science Plant Science Polyethylene glycol lcsh:Plant culture Horticulture Biology Osmosis 01 natural sciences Biochemistry maize seed chemistry.chemical_compound lcsh:TP248.13-248.65 PEG ratio Genetics Osmotic pressure lcsh:SB1-1110 Cultivar klijavost semena Abiotic component drought stress fungi seme kukuruza food and beverages uslovi suše 04 agricultural and veterinary sciences biology.organism_classification germination chemistry Germination Seedling 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Agronomy and Crop Science 010606 plant biology & botany Biotechnology |
| Zdroj: | Ratarstvo i Povrtarstvo, Vol 55, Iss 3, Pp 135-138 (2018) Ratarstvo i povrtarstvo / Field and Vegetable Crops Research |
| ISSN: | 2217-8392 1821-3944 |
| Popis: | Drought stress is one of the most important abiotic stresses influencing performance of crops. Certain stress-related conditions can appear and slow down germination, seedling development and in some cases cause loss of life durability of seed. Assuming that drought in the substrate affects corn seed performance, such conditions were simulated in this study in order to examine their effects on seed germination and length in seven corn hybrids. Polyethylene glycol (PEG) 6000 has been used in laboratory studies for simulation of drought conditions. Different osmotic potentials of PEG solutions were used (control; -0.1, -0.3, -0.6 and -0.9 MPa). Germination percentage decreased as osmotic potential increased at PEG solution. Suša je jedan od najvažnijih abiotskih stresova koji utiču na razvoj ratarskih kultura. Određeni uslovi koji su povezani s pojedinim stresovima mogu dovesti do usporavanja klijanja, razvoja ponika, a u nekim slučajevima i do gubitka životne sposobnosti semena. Pod pretpostavkom da nedostatak vode u supstratu utiče na karakteristike semena kukuruza, simulirani su uslovi suše u ovoj studiji sa ciljem da se ispita njihov uticaj na klijavost semena i razvoj ponika sedam hibrida kukuruza. Polietilen glikol (PEG) se koristi u laboratorijskim istraživanjima za simulaciju uslova suše. Koristili smo različite osmotske potencijale u rastvoru PEG-a (kontrola, -0,1, -0,3, -0,6 i -0,9 MPa). Procenat klijavosti je opadao sa smanjenjem osmotskog potencijala u rastvoru. Osetljivost korena i nadzemnog dela se povećava sa smanjenjem osmotskog potencijala. Na potencijalu od -0,6 i -0,9 MPa, nadzemni deo semena kukuruza nije se razvio. |
| Databáze: | OpenAIRE |
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