Maturity group of perspective potato hybrids in the conditions of the Chuvash

Abstract

In the conditions of the Chuvash Republic new hybrids of potato selected by the All-Russian Research Institute of potato farming named after A.G. Lorkh were studied. The studies were carried out on heavy-loamy gray forest soils. As a result of selection work from 2010 to 2017 more than 11.000 breeding samples were studied. For 2015-2017 years of study on the complex of economically valuable traits two breeding numbers were identified: 1683-12-2 and 1691- 12-5. According to the results of crop accumulation in the dynamics the duration of vegetation of these hybrids was determined. The accumulation of most of the harvest of the hybrid 1683-12-2 was observed in the period between the second registration (55 days from germination) to a total harvest, during the aging of the vegetative mass of the potato. Hybrid 1691-12-5 accumulated the bulk of the crop on the 55th day after full shoots-89.0 %. The vegetation period of breeding number 1683-12-2 was 85 days, which allowed to refer it to the group of middle - ripening varieties, and in 1691-12-5 the growth period was 72 days, which is typical for the middle-early maturity group.

Keywords

• potato
• perspective hybrid
• breeding number
• yield
• maturity group