Assessment of agro-biological characteristics and aurantio-obtusin contents in seeds of some samples of Senna tora L. grown in Hanoi

Abstract

This study was carried out on 11 Senna toraL. samples grown in different ecological areas in Thanh Tri, Hanoi in 2021. These samples are used for assessment of agronomical characteristics, yield component, and aurantio-obtusin contents. The experiment was arranged in sequence with no replication. The experimental plot area was 50 m², planting distance was 40x40 cm. The results showed that the plant height varied from 123.6 to 233.2 cm, the average number of firm fruits/plants varied from 253.4 to 464.0 fruits, the average number of seeds/fruits varied from 18.1 to 30.1 seeds, and the weight of 1,000 seeds reached 8.63 to 21.70 g. The individual yield of Senna toraL. samples varied from 33.2 to 108.6 g/plant. The promising varieties in term of yield are TQM 1 (108.6 g/plant), TQM 6 (55.6 g/plant), and TQM 4 (54.8 g/plant). The aurantio-obtusin content in the seeds of the Senna toraL. samples varied from 0.06 to 0.27%. Amongst them, the aurantio-obtusin content of TQM 11 is the highest (0.27%), followed by TQM 10, TQM 8, TQM 4, TQM 3, TQM 1 and TQM 2 (0.15 to 0.24%), and the rest of samples reached 0.06-0.09%.