Claim · model-written summary
CO2 content of the atmosphere does not appear to be a controlling factor in cotyledon food reserve digestion or hydrolysis.
- Taxon
- soybeans
Glycine maxe0 - Treatment
- CO2 content of the atmospheree4
- Outcome
- digestion or hydrolysis of food reserves in the cotyledone4
Verbatim
e0“During the initial phase of germination and seedling development of soybeans, most of the increase in dry weight in the embryo axis occurred in the hypocotyl”
e4“The parallel decrease in dry weight of the cotyledons that occurred for both CO2 treatments (days 1 to 13) suggested that CO2 content of the atmosphere is not a controlling factor in the digestion or hydrolysis of food reserves in the cotyledon”
Title
Germination and Seedling Development of Soybeans in a Carbon Dioxide- Deficient Atmosphere
D. G. Green; T. W. Sudia American Journal of Botany 1969. doi:10.2307/2440923
Other claims from this paper (9)
- Observation Most of the increase in dry weight in the soybean embryo axis occurred in the hypocotyl.
- Observation The soybean epicotyl did not undergo a rapid increase in size and dry weight until the 4th to 5th day of growth.
- Intervention effect Hypocotyl dry weights under CO2-normal and CO2-limiting treatments were similar from day 1 to 11.
- Intervention effect Under CO2-limiting conditions, hypocotyl dry weight decreased by day 13 while it continued to increase under CO2-normal conditions.
- Observation Cotyledon dry weight decreased in parallel under both CO2 treatments from day 1 to 13.
- Observation CO2 treatments did not produce significantly different utilization of lipids, total carbohydrates or proteins in the cotyledons.
- Observation Seedlings used cotyledonary carbohydrates and lipids before proteins under both CO2 atmospheres.
- Observation Food reserves in soybean cotyledon storage cells are sufficient for seedling development until about day 9.
- Observation Net CO2 uptake by soybeans in a CO2-normal environment first occurred between days 9 and 11.