The effects of biostimulation by laser irradiation on sowing value of seeds and yield of some crop plants
Krzysztof Klimont
k.klimont@ihar.edu.plKrajowe Centrum Roślinnych Zasobów Genowych, Instytut Hodowli i Aklimatyzacji Roślin w Radzikowie (Poland)
Abstract
The effects of biostimulation by laser light on sowing value of seeds in soybean cv. Mazowia, lucerne cv. Radius, white cabbage cv. Kamienna Głowa, cauliflower cv. Pionier GOF, sweet paprika cv. Zorza, root parsley cv. Berlińska PNE, carrot cv. Perfekcja GOF and onion cv. Wolska, as well as on yield of carrot root and onion bulbs, were evaluated. Irradiation with divergent He-Ne laser light at wave length of 632.8 nm and a power density of 4mW/cm2 was applied in four variants: 2, 4, 6 and 8 doses. No treatment variant was a control. The numbers of seeds germinating normally and abnormally as well as the proportions of hard and dead seeds were estimated. All the irradiation doses significantly increased the yield of onion bulbs harvested from micro-plots. The effects of carrot treatment upon root yield from plot were similar at two- and four-fold doses. All variants of pre-sowing irradiation positively affected the seeds of onion and paprika, improving their germination energy and capacity. Moreover, the treatment resulted in decreased proportion of abnormal seedlings in onion. The two-fold and four-fold doses improved seed germination capacity in cauliflower and carrot. In contrast, seed vitality lowered in parsley when irradiated at the four-fold dose. The results show that the effects of biostimulation by laser light depended on plant species and irradiation dose.
Keywords:
laser, pre-sowing biostimulation, seeds, sowing valueReferences
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Authors
Krzysztof Klimontk.klimont@ihar.edu.pl
Krajowe Centrum Roślinnych Zasobów Genowych, Instytut Hodowli i Aklimatyzacji Roślin w Radzikowie Poland
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