Spremembe v vitalnosti semen različnih sort žafranike (Carthamus tinctorius L.) med dozorevanjem kot odziv na pomanjkanje vode

Kazem GHASSEMI-GOLEZANI, Morad MOHAMMADI, Saeid ZEHTAB-SALMASI

Povzetek


Razvoj semen in njihova vitalnost sta odvisna od okoljskih stresov kot je tudi pomanjkanje vode. V tej raziskavi so bili ovrednoteni učinki različnih namakanj in časa žetve na vitalnost semen štirih jarih sort žafranike. Obravnavanja so bila namakanje (namakanje po 70, 100, 130 in 160 mm evaporacije) na glavnih ploskvah in štiri sorte žafranike na podploskvah (Faraman, Goldasht, Sina in Soffeh). Semena so bila vzorčena v intervalu petih dni v sedmi stopnji razvojne faze in zrelosti. Največja in najmanjša masa semena in kalic sta bili pri vseh vzorčenjih in časih namakanja zabeleženi pri sortah Faraman in Sina. Vitalnost semen sort žafranike, izmerjena kot električna prevodnost izlužkov vode, v kateri so bila namakana semena in suha masa kalic sta se zmanjševali z upadanjem razpoložljivosti vode. Največja masa semen in suha masa kalic ter najmanša električna prevodnost izlužkov so bile izmerjene 40-45 dni po cvetenju, odvisno od intervala namakanja in sorte. Vsebnost vode v semenih je bila v tem obdobju 15-20 %, kar je ugodno za neposredno mehansko žetev, mlačvo in shranjevanje.

Ključne besede


žafranika, masa semen in kalic, vitalnost semen, oskrba z vodo

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2016.107.1.02

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