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Inter‐organ Control of Chlorophyll Synthesis in Primary Leaves of Dark‐grown Phaseolus aureus
Author(s) -
HOLE C. C.,
DODGE A. D.
Publication year - 1975
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1975.tb01849.x
Subject(s) - phaseolus , hypocotyl , chlorophyll , biology , cotyledon , botany , gram , chlorophyll a , horticulture , bacteria , genetics
The changing roles of the cotyledons and hypocotyl in the development of dark‐grown Phaseolus aureus seedlings are described. The effect of the cotyledons on total chlorophyll synthesis declined with age, but on a chlorophyll per gram fresh weight basis this was less pronounced. In five‐day‐old plants the hypocotyl was more effective than the cotyledons in increasing the chlorophyll level, and together their effect was less than additive. The promoting factors in the cotyledons were at a saturating level at this stage. The relationship between the effects of the two organs is discussed with particular reference to the components which they supply to the leaves.