Growth and development of higher plants under hypobaric conditions

摘要

Plant growth experiments were conducted to study the feasibility of growing plants under hypobaric condition. Seeds of rice and Arabidopsis thaliana germinated at 25 kPa total pressure with 5 or 10 kPa O{sub}2 partial pressures. Rice plants in vegetative stage grew normally at 50 kPa of total pressure with suitable O{sub}2 and CO{sub}2 partial pressures, however, their development in reproductive stage was delayed at 50 kPa total pressure. Seed production of Arabidopsis at 23 kPa total pressure with 21 kPa O{sub}2 partial pressure was almost the same as that at atmospheric pressure.