Ispitivanje dormantnosti semena suncokreta
Evaluation of dormance sunflower seed lots
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U Laboratoriji za ispitivaje semena Instituta za kukuruz Zemun Polje,
u toku redovnog ispitivanja klijavosti semena suncokreta, uoĉeno je
kod dve partije semena veliki broj neklijalog semena. Seme je
stavljeno na naklijavanje dva puta sa razliĉitim temperaturnim
režimom. U toku prvog ispitivanja seme je stavljeno na klijanje
metodom između filter papira, hlađenje semena je trajalo 6 dana,
energija klijanja je oĉitana ĉetvrtog dana a ukupna klijavost desetog
dana. Seme je naklijavano u klijalištu na 200C sa režmom svetlosti 8
sati dan, 16 sati noć. U toku drugog ispitivanja, seme suncokreta je
postavljeno na klijanje istom metodom između filter papira, hlađeno
je 6 dana, energija klijanja je oĉitana ĉetvrti dan a završna klijavost
deseti dan. Naklijavanje je obavljeno u sobi klijalištu na naizmeniĉnoj
temperaturi 20<=>300C, sa svetlosnim režimom 8 sati dan, 16 sati
noć. Urađen je i TTZ - tetrazolium test. Analizom dobijenih rezultata
uoĉeno je da na kraju prv...og ispitivanja izdvojen veliki broj neklijalog
semena koje je bilo sveže bez simptoma bolesti. Na kraju drugog
ispitivanja taj procenat je bio manji u odnosu na prvo ispitivanje.
Naklijavanje semena na većoj, naizmeniĉnoj temperaturi 20<=>300C,
u toku drugog ispitivanja, smanjilo je broj neklijalog semena. TTZ
testom je potvrđena vitalnost neklijalog semena.
A great number of nongerminated sunflower seed of two lots were
observed during regular testing in the Seed Testing Laboratory of the
Maize Research Institute, Zemun Polje. Seeds were germinated
twice under different temperature regimes. In the course of the first
test, seeds were germinated between filter paper, cooling lasted 6
days, the first count was done on the fourth day, while total
germination was determined on the 10th day. Seeds were germinated
in the germination cabinet at 200oC with 8 h (light) to16 h (night)
regime. In the course of the second test, the method applied was the
same: sunflower seeds were germinated between filter paper,
cooling lasted 6 days, the first count was done on the fourth day,
while total germination was determined on the 10th day. Germination
was performed in the germination cabinet at the alternating
temperature of 20<=>300oC, and the light regime of 8 h (light) to16 h
(night). The TTZ -tetrazolium test was also perfor...med. The analysis
of obtained results showed that a great number of nongermination,
but fresh and disease-free seeds were detected at the end of the first
test. The corresponding percentage at the end of the second test
was smaller. Seed germination at higher, alternating temperatures of
20<=>300oC, in the course of the second test, reduced the number of
nongerminated seeds. Seed viability was confirmed by the TTZ test.
Кључне речи:
suncokret / dormantnost semena / klijavost semena / sunflower / seed dormancy / seed germinationИзвор:
6 Simpozijum Sekcije za oplemenjivanje organizama Društva Genetiĉara Srbije i 9 Simpozijum Društva selekcionera i semenara Republike Srbije, 07-11.05.2018. - Zbornik apstrakata, 2018, 223-224Издавач:
- Beograd : Društvo genetiĉara Srbije
- Beograd : Društvo selekcionera i semenara Republike Srbije