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Effect Of Mineral Deficiency On The Growth Of The Salt Marsh Rush Juncus Roemerianus, Lionel N. Eleuterius, John D. Caldwell
Effect Of Mineral Deficiency On The Growth Of The Salt Marsh Rush Juncus Roemerianus, Lionel N. Eleuterius, John D. Caldwell
Gulf and Caribbean Research
Plants of the salt marsh rush Juncus roemerianus were grown in deficient and complete nutrient solutions, and the growth responses were compared qualitatively and quantitatively. Plants grown in solutions deficient in K, S, P, and Mg were similar in appearance, which exemplified severe growth retardation. Plants grown in solutions deficient in Ca, N, and Fe also were very similar in total growth response, but had much longer leaves, more shoots, and greater biomass than those grown in the K, S, P, and Mg deficient solutions. Plants grown in complete nutrient solutions, with various sources of Fe, were very robust. Growth …
Growth Kinetics And Longevity Of The Salt Marsh Rush Juncus Roemerianus, Lionel N. Eleuterius, John D. Caldwell
Growth Kinetics And Longevity Of The Salt Marsh Rush Juncus Roemerianus, Lionel N. Eleuterius, John D. Caldwell
Gulf and Caribbean Research
Vegetative development of shoots of the tidal marsh rush Juncus roemerianus was studied quantitatively in short (S) , medium (M), and tall-leaved (T) populations. Shoot longevity varied between populations, with some shoots producing one leaf and living 4 months, while others produced seven leaves and lived over 4 years. An equation was developed from plastochron and leaf-age determinations to estimate shoot age in each population studied. Major morphological events common to all populations were (1) cessation of growth of the first leaf produced on an erect stem when growth of the second leaf was initiated, and (2) death of the …
Vegetative Morphology And Anatomy Of The Salt Marsh Rush, Juncus Roemerianus, Lionel N. Eleuterius
Vegetative Morphology And Anatomy Of The Salt Marsh Rush, Juncus Roemerianus, Lionel N. Eleuterius
Gulf and Caribbean Research
The extensive rhizome development found in Juncus roemerianus makes this species unique among rushes and is a biological feature responsible, in part, for its domination of large tracts of salt marsh. Branching in certain mature plants is distinctly sympodial, while in most it is obscured by precocious development of the continuation bud and appears to be monopodial. Each vegetative unit is composed of a scaly rhizome which grows to varying lengths and then abruptly turns up at the end to become an erect shoot. A continuation rhizome consistently arises from an axillary bud in a ventral scale leaf. Transitional leaves …