In:
Journal of Physics: Conference Series, IOP Publishing, Vol. 1393, No. 1 ( 2019-11-01), p. 012107-
Abstract:
The paper displays the results of the study of the effect of pre-sowing irradiation of spring barley of the Vladimir variety with a low-energy electron beam in a wide dose range from 1 to 8 kGy and a dose rate of 500 Gy/imp on seed infestation by root rot and sowing qualities. It has been shown that the development of the disease depends on both the radiation dose and the post-radiation period (PP). The most effective was the effect of irradiation on Helminthosporium sativum (synonymous with Drechslera teres) at PP of 4 days: there was observed a reduction in the damage degree by 33–48% and the disease incidence – by 29–46% at doses of 4–8 kGy. At the PP of 7 and 11 days, the irradiation of seeds with doses of 3–5 kGy reduces the degree of damage to the seedlings by Helminthosporium sativum by 30–37% and 28–41%, respectively. With an increase in PP up to 14 days, a decrease in the damage degree of seedlings by root rot by 33% was observed only at an irradiation dose of 4 kGy, which indicates a reduction in the efficiency of irradiation with increasing PP. The prevalence of the disease decreased at PP of 4 days by 28–46% (doses of 4-8 kGy), at PP of 7 days – by 30–37% (doses of 2–6 kGy), at PP of 11 days – by 26–48% (doses 3, 4 and 7 kGy) and PP 14 days – by 33% at a dose of 4 kGy. It has been established that electron irradiation stimulates laboratory germination of seeds at PP of 7 days by 22–25% at doses of 1, 2, 4 and 5 kGy and, on the contrary, reduces it by 19–24% at PP of 4 days and doses of 3, 5 and 8 kGy. At doses higher than 4 kGy, irradiation inhibits sprout length by 12–39%, roots – by 9–15%, and also at doses of 2–8 kGy, it reduces the wet weight of seedlings by 10–50%. Thus, it was shown that pre-sowing electron irradiation of spring barley of the Vladimir variety reduces the resistance of Helminthosporium sativum and can be used to combat the pathogenic microflora of the grain.
Type of Medium:
Online Resource
ISSN:
1742-6588
,
1742-6596
DOI:
10.1088/1742-6596/1393/1/012107
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2019
detail.hit.zdb_id:
2166409-2
