Influence of the structural and functional characteristics of the seeding material on the yield structure elements and resistance to leaf diseases of spring soft wheat
Laen...
Kuupäev
2021
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
The high-quality grain use when sowing is a necessary condition for obtaining a high
yield. Along with the standard tests regulated by the ISTA (International Seed Testing
Association), there are promising introscopic techniques for the seed material quality
controlling - methods of microfocus radiography and gas discharge visualization
(electrophotography). The effect of structural and functional characteristics of the seeding
material on the wheat productivity and diseases resistance was studied out on the experimental
field of the Vavilov All-Russian Institute of Plant Genetic Resources. Ten accessions of soft
wheat with the ‘parametric passport’ (including more than thirty optical parameters, including
gas discharge images, morpho- and densitometric analysis of X-ray patterns) were used as an
experimental seeding material. Unviable wheat seeds, in comparison with healthy ones, were
characterized mainly by a smaller area, form coefficient, standard deviation of three-dimensional
fractality by isoline, entropy by isoline, higher brightness and standard deviation of the isoline
radius of the gas discharge images. Morpho- and densitometric indices of unviable seeds differed
in reduced values of the circle factor, roundness, minimum and maximum average brightness, but
in greater elongation and optical density of the X-ray patterns projection. The intensity of wheat
affection by diseases has varied depending on the structural and functional characteristics of
seeds. It was noted, that the brown rust development decreased with an increase in the entropy by
isoline, the contour irregularity and the average radius of the isoline.
Kirjeldus
Received: January 25th, 2021 ; Accepted: November 5th, 2021 ; Published: November 15th, 2021 ; Correspondence: kleon9@yandex.ru
Märksõnad
disease resistance, gas discharge imaging, microfocus radiography, seed material, soft wheat, yield structure, articles