Seed quality of some species of the genus Passiflora L. of the Botanical Garden of Samara University

Data on functional and morphological parameters of seeds of three species of the genus Passiflora L., which were collected in the period from 2014 to 2020 in the greenhouse of the Botanical Garden of Samara University are presented. The collected seeds were stored in paper bags at room temperature. The length and width of the seeds were measured by flatbed scanning. In Passiflora coriacea Juss., the seed length varied from 3.8 to 5.2 mm, the average length was 4.3 mm, the seed width varied from 2.0 to 3.0 mm, the average width was 2.6 mm; in Passiflora foetida L. the seed thickness varied from 4.0 to 4.9 mm, the average length was 4.5 mm, the seed width ranged from 2.0 to 2.6 mm, the average width was 2.3 mm; in Passiflora quadrangularis L., the seed thickness varied from 6.7 to 7.9 mm, the average length was 7.5 mm, the seed width varied from 6.1 to 7.2 mm, the average width was 6.6 mm. The weight of 1000 seeds, in P. quadrangularis it was 37.1 g, the seeds of two other species – P. coriacea and P. foetida slightly differed in this indicator (the average weight of 1000 seeds was 12.9 g and 13.2 g, respectively). An express assessment of seed quality was carried out using digital microfocus radiography. The analysis showed the high quality of the seeds formed in the greenhouse of the Botanical Garden of Samara University, their fulfillment varied from 87 to 100 %. In the seeds of P. coriaceae in 2014 and 2017, damage by insects eating the contents of the seed can be assumed.