Dinamika nakupljanja suve materije u zrnu hibrida kukuruza različitih grupa zrenja

Abstract

Cilj ovog rada je bio da se u datim agroekološkim uslovima ispitaju dinamika nakupljanja suve materije u zrnu i visina prinosa u zavisnosti od hibrida kukuruza različite dužine vegetacije. Ogled je postavljen po RCB dizajnu sa 12 hibrida, u četiri ponavljanja, na oglednom polju Rimski Šančevi, Instituta za ratarstvo i povrtarstvo. Praćenje dinamike nakupljanja suve materije u zrnu je vršeno u periodu od svilanja do fiziološke zrelosti, na svaka tri dana, za svaki hibrid. Prikupljeni podaci o dinamici suve materije u zrnu su analizirani u programu SegReg. Na osnovu vremenske analize, kod svih hibrida je nakupljanje suve materije pratilo linearni trend do maksimuma tj. prelomne tačke, od koje se sadržaj suve materije nije menjao. Kod najranijeg hibrida (NS-1) je maksimalni sadržaj suve materije (0.255g) postignut 39 dana nakon svilanja (DNS), dok je kod najkasnijeg hibrida (NS-12) maksimalni sadržaj suve materije iznosio 0.249g i postignut je 42 DNS.

The aim of this study was to examine the dynamics of dry matter accumulation in the grains of maize hybrids of different maturity groups and their yield in the provided agroecological conditions. The trial was organised as a RCB design, with 12 hybrids in four replications, and was conducted at the Rimski Šančevi experimental field of Institute of Field and Vegetable Crops in Novi Sad (IFVCNS). The progression of dry matter accumulation in the grain was monitored in the period from silking to physiological maturity, at three-day intervals, for each hybrid. Collected data were analyzed in the SegReg program. The dry matter accumulation followed a linear trend until the breaking point (linear plateu regression), from which its content remained stable. The earliest hybrid (NS-1) achieved the maximum dry matter content (0.255g) at 39 days after silking (DAS), while the latest hybrid (NS-12) reached its maximum dry matter content (0.249g) at 42 DAS.