Polietilen glikol (PEG) se dobiva polimerizacijom etilen oksida (EO) s vodom, monoetilen glikolom... more Polietilen glikol (PEG) se dobiva polimerizacijom etilen oksida (EO) s vodom, monoetilen glikolom ili dietilen glikolom uz alkalnu katalizu. Produkt je molekula jednostavne kemijske strukture: HO [CH2 CH2 O]n H, gdje je (n) broj EO jedinica. Najznacajnije svojstvo svih PEG-a je topljivost u vodi, sto ih cini prikladnim za bezbrojne razlicite aplikacije. PEG-i se cesto primjenjuju u istraživanjima odnosa biljaka prema vodi, osobito za simulaciju susnih uvjeta (osmotski stres). Osmotski potencijal vodenih otopina PEG-a 6000 je u vezi s njegovom koncentracijom. U ovom radu su prikazani rezultati fizioloskog odgovora sjemena soje uvjetovan osmotskim stresom primjenom PEG-a u fazi klijanja. Uz vodu kao kontrolu, primijenjene su dvije razine osmotskog stresa – 5% (-0, 5 bara) i 10% (-1, 48 bara) otopina PEG 6000 kao medij za klijanje sjemena. Sadržaj slobodnog prolina, ukupnih fenola i intenzitet lipidne peroksidacije tkivu hipokotila klijanaca soje se povecao pri visoj koncentraciji otop...
The aim of this research was to investigate the influence of an imbibition during bulk seed condu... more The aim of this research was to investigate the influence of an imbibition during bulk seed conductivity test on maize seed germinability and to establish the relations among maize (Zea mays L.) seed conductivity and other vigour parameters in different germination conditions. Large and medium seed size of ten maize hybrids harvested in two subsequent years were tested by standard germination test (SG), cold test (CT) and electrical conductivity test (EC), as well as by germination test after EC evaluation. The effects of seed size, seed age, hybrid and their interactions were strongly expressed in the majority of analysed seed and seedling vigour parameters. Mean seed germinability evaluated after EC test was 91.7%, which was slightly lower than mean SG value (%), implying no significant imbibitional damage especially in hybrids with high seed vigour. EC value under 10 µS cm -1 g -1 was obtained with seed showing high germination and seedling vigour for both SG and CT. EC values hi...
Polietilen glikol (PEG) se dobiva polimerizacijom etilen oksida (EO) s vodom, monoetilen glikolom... more Polietilen glikol (PEG) se dobiva polimerizacijom etilen oksida (EO) s vodom, monoetilen glikolom ili dietilen glikolom uz alkalnu katalizu. Produkt je molekula jednostavne kemijske strukture: HO [CH2 CH2 O]n H, gdje je (n) broj EO jedinica. Najznacajnije svojstvo svih PEG-a je topljivost u vodi, sto ih cini prikladnim za bezbrojne razlicite aplikacije. PEG-i se cesto primjenjuju u istraživanjima odnosa biljaka prema vodi, osobito za simulaciju susnih uvjeta (osmotski stres). Osmotski potencijal vodenih otopina PEG-a 6000 je u vezi s njegovom koncentracijom. U ovom radu su prikazani rezultati fizioloskog odgovora sjemena soje uvjetovan osmotskim stresom primjenom PEG-a u fazi klijanja. Uz vodu kao kontrolu, primijenjene su dvije razine osmotskog stresa – 5% (-0, 5 bara) i 10% (-1, 48 bara) otopina PEG 6000 kao medij za klijanje sjemena. Sadržaj slobodnog prolina, ukupnih fenola i intenzitet lipidne peroksidacije tkivu hipokotila klijanaca soje se povecao pri visoj koncentraciji otop...
The aim of this research was to investigate the influence of an imbibition during bulk seed condu... more The aim of this research was to investigate the influence of an imbibition during bulk seed conductivity test on maize seed germinability and to establish the relations among maize (Zea mays L.) seed conductivity and other vigour parameters in different germination conditions. Large and medium seed size of ten maize hybrids harvested in two subsequent years were tested by standard germination test (SG), cold test (CT) and electrical conductivity test (EC), as well as by germination test after EC evaluation. The effects of seed size, seed age, hybrid and their interactions were strongly expressed in the majority of analysed seed and seedling vigour parameters. Mean seed germinability evaluated after EC test was 91.7%, which was slightly lower than mean SG value (%), implying no significant imbibitional damage especially in hybrids with high seed vigour. EC value under 10 µS cm -1 g -1 was obtained with seed showing high germination and seedling vigour for both SG and CT. EC values hi...
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Papers by Marija Spoljarevic