The effect of different LED illuminators on the germination index of wheat grains obtained in the greenhouse stage of the SSD breeding process
Patrycja Siedlarz
Instytut Hodowli i Aklimatyzacji Roślin — Państwowy Instytut Badawczy (Poland)
Piotr Stefański
Hodowla Roślin Strzelce Grupa IHAR Sp. z o.o. (Poland)
Przemysław Matysik
Hodowla Roślin Smolice Sp. z o.o. Grupa IHAR (Poland)
Zygmunt Nita
Hodowla Roślin Smolice Sp. z o.o. Grupa IHAR (Poland)
Krystyna Rybka
k.rybka@ihar.edu.plInstytut Hodowli i Aklimatyzacji Roślin - Państwowy Instytut Badawczy (Poland)
Abstract
During the SSD (Single Seed Descent) process of cereal breeding unripe kernels are often collected to shorten breeding cycles. Present studies were undertaken to check whether the germination of kernels harvested on the 23rd day after pollination from plants grown in a greenhouse is influenced: 1) by different light spectra used during cereal cultivation in the greenhouse and 2) by different single light bands used during seed drying. The materials for studies consisted of 2 spring wheat cultivars: Harenda and Tybalt. The plants were grown in a shadowed greenhouse with controlled temperature (22 ± 3°C) and humidity (80% ± 5%) and illuminated by HPS lamp (control) and two types of LED illuminators: based on blue and red LEDs and based on white LEDs. The ears were harvested on 23rd day after flowering, according to the methodology used in field experiments. The threshed kernels were placed under monochromatic light sources (blue, green and red), dried for a period of 10 days at 25°C and then germinated. The germination index (GI), the total number of germinated kernels and the number of kernels that did not germinate and became infected by fungal diseases during the experiment, were counted. It was found that lightening of seeds during drying improved the germination index and total number of germinated seeds. The green light induced the most uniform germination (≥ 70%) independently from the light used during wheat growth, while the blue light (Royal Blue) improved germination of seeds taken from plants cultivated under LED illuminator based on blue and red diodes. Obtained results confirmed that it was possible to find LED illuminator better than standard HPS lamp for cereal cultivation and that lightening of the kernels during drying improved their germination. Standardization of procedures would be needed.
Supporting Agencies
Keywords:
germination index, GI, greenhouse cultivation, LED, light emitting diodes, Triticum aestivum L.References
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Authors
Patrycja SiedlarzInstytut Hodowli i Aklimatyzacji Roślin — Państwowy Instytut Badawczy Poland
Authors
Piotr StefańskiHodowla Roślin Strzelce Grupa IHAR Sp. z o.o. Poland
Authors
Przemysław MatysikHodowla Roślin Smolice Sp. z o.o. Grupa IHAR Poland
Authors
Zygmunt NitaHodowla Roślin Smolice Sp. z o.o. Grupa IHAR Poland
Authors
Krystyna Rybkak.rybka@ihar.edu.pl
Instytut Hodowli i Aklimatyzacji Roślin - Państwowy Instytut Badawczy Poland
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