Study of seeded pea lines in a nursery of competitive varietal trials under drought conditions in 2020

Abstract

Peas are affected by weather conditions. The effects of adverse factors do not affect the formation of the crop for the better. Under the influence of drought and high temperatures, there was an inhibition of growth processes, namely, the construction of the leaf apparatus, which, in turn, led to a sharp decline in seed productivity. It is crucial to have varieties (lines) with a more stable and shorter period from sprouting to maturity, taking into account the sharply changing heat and moisture supply in the Akmola region, making it possible to harvest the crop earlier. The authors obtained the relationship between yield and abiotic factors and morphobiological characteristics of peas in the conditions of the Akmola region for 2020. In their research, the authors found that weather conditions influenced the duration of the growing season 2020 and the grain yield of field peas. The ever-increasing season for pea lines was within 83-91 days. The peculiarities of the lines used, temperature regime and precipitation of the third decade of June influenced the duration of two periods (sprouting-flowering and flowering-ripening). Yields of pea lines in the nursery of competitive variety trials ranged from 2.80 (line 93-04-2) to 18.53 c/ha (line 6-08-7). As a result of their research, the authors found a positive average correlation between plant height and the number of beans (r = 0.33). The average plant height per sample was 62 cm. The average number of beans per plant in the nursery was 5.9, and the average number of seeds was 20.0. The research results can be successfully used in the cultivation of domestic and foreign varieties of field peas. In international practice, the results of this experiment can be applied in the selective improvement of field peas and the creation of new high-tech varieties.