On three cultivated subspecies of pea (Pisum sativum L.)

The purpose of the current research was to study and identify new promising pea lines with stable indicators of the trait ‘1000-seed weight’. The study was carried out in the fields of the laboratory for legumes breeding and seed production of the FSBSI Agricultural Research Center “Donskoy”, located in the southern part of the Rostov region, in the Competitive Variety Testing in 2018–2020. The objects of the study were 12 new pea lines developed by the FSBSI “ARC “Donskoy”. The standard variety was ‘Aksaisky usaty 5’. The study conducted in 2018–2020 resulted in assignment of all samples to the medium-size group, which had 150–250 g of ‘1000-seed weight’. The lines ‘B-3626/20’ (213.3 g) and ‘B-3733/9-1’ (210.7 g) produced the largest size of seeds. Intervarietal variability differed through the years. In 2018 it was 13.6%, in 2019 it was 11.5% and in 2020 it was 21.1%, with an annual average indicator of 19.8%. The analysis of intravarietal variability showed that the lowest variability (less than 10%) was characteristic for the standard variety ‘Aksaisky Usaty 5’ (5.9%), the lines ‘G-1014’ (7.7%) and ‘B-3733/9-1’ (9.1%). The average variability (10-20%) was characteristic for the lines ‘G-1008’ (13.7%), ‘B-3790/30-3’ (11.2%), ‘B-3626/20’ (19.8%). In the rest of the breeding samples, intravarietal variability was high (more than 20%) through the years of study. In this study, the standard variety ‘Aksaisky Usaty 5’ had the highest homeostasis of 157.5. Not a single new line has exceeded this figure. This indicates that this variety least of all among the studied samples, changed the size of seeds under different growing conditions through the years of study. Among the studied new breeding lines, the breeding lines ‘G-1014’ (86.3), ‘B-3733/9-1’ (64.6) had high homeostaticity due to the trait ‘1000-seed weight’.

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The effect of a vegetation period on protein percentage in seed of the pea collection samples

Ashiev

Khabibullin

Скулова

2022

Zernovoe hozâjstvo Rossii

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The purpose of the study was to identify the effect of the length of a vegetation period of collection samples on protein percentage in pea seed. The study was carried out in the southern part of the Rostov region on the fields of the FSBSI «ARC «Donskoy» in 2017–2020. The objects of the study were 100 collection pea samples from the N. I. Vavilov ARIPGR (VIR), including 53 leafless samples and 47 leafy ones. The longest vegetation period on average for the collection (93.8 days) was identified in 2017. The intervarietal variability of this trait, expressed by a variation coefficient, this year was 5.5 % with a minimum value of 63 days and a maximum of 101 days. In the group of varieties of the leafless type, the intervarietal variability was 6.4 % (min. 63 days; max. 100 days), in the leafy group it was 4.2 % (min. 80 days; max. 101 days). In other years, there was a reduction of a vegetation period and a decrease in its intervarietal variability due to unfavorable weather conditions in the form of a lack and shortage of precipitation against the background of elevated and high air temperatures. But they also led to the maximum accumulation of protein in seeds of collection samples, thereby showing the greatest intervarietal variability of this indicator. The calculation of the correlation coefficient showed the absence of a correlation dependence of protein percentage on length of vegetation, both on average for the collection (r = 0.03+0.10) and for the groups of leafless (r = 0.08+0.14) and foliate (r = 0.05+0.15) leaf morphotypes. The construction of graphs with errors for groups of leafy morphotypes revealed samples with a protein percentage of more than 25.0 %. In the group of the leafless morphotype, they had a vegetation period of 78–80 and 83–85 days, and in the group of the leafy morphotype, it was 77–79 days on average over the years of study.

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On three cultivated subspecies of pea (Pisum sativum L.)

Cited by 4 publications

References 16 publications

Phylogenetic relationships among Pisum L. species from Asia Minor inferred from pollen and seed coat morphology

Phylogenetic relationships among Pisum L. species from Asia Minor inferred from pollen and seed coat morphology

Variability of the trait ‘1000-seed weight’ of the promising pea lines

The effect of a vegetation period on protein percentage in seed of the pea collection samples

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