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Specific antibodies were used to localize both pectic structures and pectinmethylesterases (PME) along the mung bean hypocotyl. Calcium ions were also detected and estimated in both young, plastic and mature, stiffened cell walls. Highly methylesterified pectins were present in all cell walls but...
Chlorophyll-fluorescence parameters of three mosses, Rhytidiadelphus loreus (Hedw.) Warnst., Anomodon viticulosus (Hedw.) Hook & Tayl. and Grimmia pulvinata (Hedw.) Sm. were measured during drying, and following remoistening after a period of desiccation. Most changed little with drying until the...
The complex structure of the crown of Cornus kousa , generally five-forked in vegetative branching and two-forked in reproductive branching, is analysed quantitatively and described by two basic branching principles: decussate phyllotaxy and the resetting rule for planes of branching. Most Cornus...
Cantaloupe ( Cucumis melo L.) plants set groups of fruits which generate large variations in the reproductive:vegetative dry weight balance. We studied the influence of fruit number on the partitioning of dry matter and energy between the vegetative and reproductive organs and among the seeds and...