SPREMEMBE V VSEBNOSTI OLJ IN BELJAKOVIN V ZRNJU RAZLIČNIH SORT KORUZE V ODVISNOSTI OD NJIHOVEGA POLOŽAJA NA STORŽU KOT ODZIV NA POMANJKANJE VODE

Kazem Ghassemi-Golezani, Shabnam Heydari, Bahareh Dalil

Povzetek


V letu 2014 je bil izveden poljski poskus z deljenkami za ovrednotenje učinkov namakanja (namakanje po 60, 80, 100 in 120 mm evaporacije) na spremembe v vsebnosti olj in beljakovin v zrnju treh sort koruze (SC704, NS640 in DC303: pozno, srednje in zgodaj dozorevajoče sorte) v odvisnosti od položaja zrnja na storža v času namakanja. Celokupno je dala največji pridelek sorta SC704, ki sta ji sledili sorti NS640 in DC303. Pridelek zrnja vseh sort je bil večji pri nižjem kot pri srednjem ali višjem položaju zrnja na storžu pri vseh načinih namakanja. Tudi največje vsebnosti olja in beljakovin so bile ugotovljene v zrnju iz spodnjega dela storža. Pridelek zrnja se je pri vseh obravnavanih sortah koruze in položajih zrnja na storžih ob namakanju zmanjševal s povečanjem presledka med namakanji. Z zmanjševanjem razpoložljivosti vode se je odstotek olja zmanjševal, beljakovin pa povečeval. Omejitev oskrbe z vodo je pri vseh sortah zmajšala pridelek olja in beljakovin. Spremembe v pridelku olja in beljakovin obravnavanih sort koruze pri različnih položajih zrnja na storžu ob času obravnavanj pripisujemo spremembam v pridelku zrnja.

Ključne besede


sorte koruze, olje, beljakovine, položaj zrnja na storžu, pridelek zrnja, sušni stres

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2016.107.2.05

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