EFFICIENCY AND ADAPTIVITY OF ALFALFA VARIETIES IN THE CONDITIONS OF THE FOREST-STEPPE OF THE MIDDLE VOLGA REGION

Autor: I.V. Epifanova, О.А. Timoshkin
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Volga Region Farmland, Iss 1, Pp 71-75 (2020)
Druh dokumentu: article
ISSN: 2686-7672
2713-198X
DOI: 10.26177/VRF.2020.1.5.014
Popis: The studies were carried out on the experimental field of the Penza Institute of Agriculture – a branch of Federal State Budget Scientific Institution Federal Scientific Center of Bast Crops in 2013-2016. The aim of the research was to evaluate the productivity of new alfalfa varieties and the parame-ters of their adaptability to limiting environmental factors when grown in a single-species cultivation. On average, over the years of research, the dry matter productivity of alfalfa varieties varied from 6.72 to 12.21 t/ha depending on the index of environmental conditions (Ii-3.55-1.85). The best in productivity was the Populyatsiya 11/15 variety with a yield of 11.42 t/ha (+ 7.6% to st.). The variabil-ity of dry matter productivity varied from 23.0 to 27.2%, which characterizes the average stability of the trait. The studied alfalfa samples showed high environmental adaptability and plasticity, the bi val-ues varied in the range of 0.86-1.26. The most stable and flexible in terms of dry matter productivity were the following varieties: Stabilnaya – bi = 0.90; σdr2 = 1.11; Populyatsiya 10/14 – bi = 0.98; σdr2 = 0.68. The seed productivity of alfalfa samples on average over the years of research ranged from 0.36 to 0.67 t/ha depending on the index of environmental conditions (Ii = - 0.15...0.15). The best vari-ety in terms of seed yield was the Mechta + Biotype 4 variety – 0.67 t/ha (+ 21.8% to st.). The variabil-ity of seed yields of the Kamellia standard was weak – 9.4%; the average yield variability (24.1-27.4%) was in the Populyatsiya 8, Korneotpryskovaya 1 and Korneotpryskovaya 2 varieties. The Kamellia standard and Mechta + Biotype 4, which stability index (SI) was 0.18 and 0.32, respectively, were characterized by a higher level of stability of the variety. The most stable and flexible varieties in terms of seed yield were the varieties: Populyatsiya 11/15 – bi = -1.05; σdr2 = 0.16; Stabilnaya – bi = -0.90; σdr2 = 0.16; PP urozhaj 07 – bi = -1.04; σdr2 = 0.08.
Databáze: Directory of Open Access Journals
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