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- W2078269901 abstract "A B S T R A C T Tissue cultures from both juvenile and adult stems of English ivy, Hedera helix L., were established in White's medium supplemented by coconut water and auxin (usually naphthalene acetic acid). With repeated transfers, cultures were habituated in less than a year to grow well without coconut water by using an auxin and kinetin. Cultures from juvenile seedlings were less demanding in requirements for growth. In all types of cultures occasionally small areas of rapidly growing cells were noticed. These when isolated gave rise to rapidly growing cultures with many cells of unusual appearance. Abnormally long cells and chain-type cells were abundant. When 0.1 mg/ liter of kinetin was added to the medium, these cells grew well without auxin and coconut water. THE TYPES of vegetative growth in English ivv, Hedera helix L., are strikingly different. The juvenile form is a vine, with reddish flattened stems, abundant aerial roots, and lobed leaves in a dorsiventral arrangement. The adult or mature fruiting form ordinarily takes many years of growth to develop and has stiff shrubby stems bearing entire leaves in spiral phyllotaxy. Red pigments and aerial roots are usually absent. When cultures were derived from the two types of stems on the same plant, the juvenile cultures maintained a higher rate of proliferation and these differences persisted through several years of monthly transfers. The present studies were designed to determine the behavior of ivy tissue cultures on various media, since these plants are being widely used for the study of juvenility in" @default.
- W2078269901 created "2016-06-24" @default.
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- W2078269901 date "1969-02-01" @default.
- W2078269901 modified "2023-09-23" @default.
- W2078269901 title "GROWTH AND HABITUATION IN TISSUE CULTURES OF ENGLISH IVY, HEDERA HELIX" @default.
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- W2078269901 doi "https://doi.org/10.1002/j.1537-2197.1969.tb07526.x" @default.
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