Results of Testing Soybean Accessions at the Far East Experiment Station of Vir in 1990-2017

Abstract

Background. Soybeans accessions from the VIR collection were tested in Primorsky Territory, Russia. These accessions had not been studied earlier in that area.Materials and methods. The testing was carried out at the Far East Experiment Station of VIR and involved 570 soybean accessions of various geographic origin. The work was performed according to VIR’s methodological guidelines.Results. The selected accessions were evaluated for their flowering and ripening schedule, seed yield, various seed characteristics (primary color of seed coat, seed hilum color, etc.), 1000 seed weight, plant height, the lower pod setting height, etc. The maximum seed yield (18.0–21.9 g) was registered for 4 accessions: ‘Primorskaya 1099’(k-9700), ‘Primorskaya 1102’ (k-9707) (Russia, Primorsky Territory); ‘Epps’(k-9308) and ‘Pioneer 3981’(k-9651) (USA). Their growing season lasted 121– 130 days. The earliest accessions ‘1337’ and ‘738-4’ (Sweden) had growing seasons of 81–90 days and low seed yields. The weight of 1000 seeds varied from 71 g to 250 g. Only one accession had 1000 seed weight higher than 300 g. The correlation between seed yield and growing season duration was medium (r = 0.57), and between seed yield and 1000 seed weight it was small (r = 0.13). Stem length varied from 15–30 to 111–130 cm. Accessions with the highest seed yield had stem lengths of 51–90 cm. The lower pod setting height ranged from a minimal level (< 6.1 cm) to 18.1–20.0 cm. Among the 92 accessions with high seed productivity (> 14.0 g) only 5 produced their lower pods at a height above 12 cm. Full-scale characterization of the material was published in Catalogue of the VIR Global Collection, Issue 905, 2019.Conclusion. The accomplished study helped to describe earlier untested accessions, grown under the environmental conditions important for soybean production. The accessions with the best economic characteristics can be used in breeding practice.

Height to first pod: A review of genetic and breeding approaches to improve combine harvesting in legume crops

“…Low correlations (r = 0.20-0.118) between HFP and seed yield per plot or per plant was reported in different experiments among 9 and 7 common bean cultivars (Eckert et al, 2011a;Girgel, 2021), and even negative correlations (r = −0.275 and −0.265) were found in 12 pea genotypes and in 4,050 mutants of chickpea plants, respectively (Togay et al, 2008;Amri-Tiliouine et al, 2018). A similar negative correlation (r = −0.15) was reported between HFP and seed yield in 570 soybean germplasm collections from 24 countries evaluated during 27 years in the Far-East region of Russia (Seferova and Bulakh, 2019). In faba bean, a negative correlation was also found between HFP and three indices of seed production per plant, ranging from r = −0.137 to -0.404 (Kosev and Georgieva, 2021).…”

“…>10-12-15 H 2 = 0.00-0.74 r = 0.23-0.71 Martin and Wilcox, 1973;Costa et al, 2008;Ramteke et al, 2012;Kang et al, 2017;Teixeira et al, 2017;Beiküfner et al, 2019;Seferova and Bulakh, 2019;Rêbilas et al, 2020;Sobko et al, 2020;Borowska and Prusiñski, 2021;Khadka et al, 2021 Common bean (Phaseolus vulgaris L.) 15 h 2 = 0.68-0.92 r = 0.43-0.69 Bisognin et al, 2019;Nadeem et al, 2020;Delfini et al, 2021;Girgel, 2021 Chickpea (Cicer arietinum L.)…”