Стійкість перспективних гібридів картоплі до фітофторозу / Resistance of promising potato hybrids to late blight
Journal Title: Вісник Львівського національного аграрного університету. Агрономія - Year 2018, Vol 22, Issue
Abstract
The article presents results of the research concerning late blight resistance of promising hybrids of potato, obtained from crossing of Zakhidna variety and hybrids, selected with its participation. Estimation of standard varieties and the studied hybrids concerning their resistance to late blight proved that descendants of different crossings had different combining ability concerning formation of the feature of field resistance to late blight. Results of the research prove that the promising hybrids of potato combine a high productivity with improved and high resistance of their tops to late blight. They include hybrids 94/89-6 × Zakhidna, Zakhidna × 02/12-18, 00/20-4 × 02/105-2, which can be further applied in selection work. According to the data of visual phytopathological estimation, affection of the top of the mentioned hybrids, being diseased with late blight in the field conditions, constituted only 10–30 %. Thus, indicators of the top affection determine that resistance of the hybrids constitutes 7-8 points according to the international 9-point scale. However, as of August 6, affection of the early ripe Bellarosa standard variety constituted 90 %, medium ripe Volia variety – 70 % and medium late Zakhidna variety – 50 %. The combinations, being the most valuable for the further selection concerning yield capacity included the varieties, which demonstrated a high frequency of reveal of high-yield genetypes, brought to a competitive testing of varieties. They include the following valuable combinations of crossings: Zakhidna х 02/12-18, 94/89-6 × Zakhidna, 00/20-4 × 02/105-2, 00/20-4 × 02/105-2, 99/27-22 × 02/2-7. Basing on efficient choice of parent pairs for crossing, the authors created potato hybrids with productivity of 1049-1160 g/bush, or 42–48 ton/ha. Most of the obtained hybrid forms exceed the standard by the indicator of yield capacity.
Authors and Affiliations
Petro Zaviriukha, Ivan Dudar, Olha Dudar
Keywords
Related Articles
- EP ID EP564656
- DOI -
- Views 170
- Downloads 0
Сорти томата селекції Інституту зрошу-ваного землеробства / The tomato varieties of breeding by the Institute of Irrigated Agriculture
One of the activities of the Institute of Irrigation Agriculture of the National Academy of Sciences is the selection of tomato culture. In recent years, a number of new high-tech varieties have been created. The State r...
Сафлор красильний як перспективна олійна культура в умовах Лісостепу Західного / Safflower as perspective olive culture in the conditions of Western Forest Steppe
It is shown the results of the research productivity dependence of different safflower varieties on methods of sowing and growth regulator application – rehoplant in the terms of Western Forest-Steppes.Research has found...
Зміна структурного стану чорнозему звичайного за різних типів використання / The change of the structural composition of the ordinary chernozems for differents types of use
Physical degradation, excessive pressure on the soil of agricultural machinery and incorrect cultivation of land greatly worsen soil structure, therefore, it is necessary to investigate the structural-aggregate compositi...
Кількість бульб у гнізді другого бульбового покоління міжвидових гібридів картоплі після гамма-опромінення насіння / Number of tubers in the nest of the second bulbous generation of interspecific potato hybrids after gamma-irradiation of the seeds
Until recently, mutagenesis in potatoes was used exclusively on materials of intrinsic origin, which is characterized by a narrow genetic basis, relatively low efficiency of genetic control of numerous agronomic features...
Характеристика вихідного матеріалу LOPHANTHUS ANISATUS BENTH. / Characteristics of the starting parent material of LOPHANTHUS ANISATUS BENTH.
The article deals with and highlights the topical issues as to the perspective of growing and use and creation of the highly productive with the high yield of the productive raw material and the content of essential oils...