חיפוש מתקדם
Lev-Yadun, S.
Flaishman, M.A.
Atzmon, N.
A single variegated mutant tree of Cupressus sempervirens found in a planted forest in Israel was propagated both vegetatively and by seeds, and the nature of the variegation was studied. In this mutant, expanding megacone ("female") scales (after pollination) in the forest and leaders of branches of the vegetatively propagated plants and some of the seedlings exhibit variegated yellow and green coloration instead of all green. The variegation is expressed in almost all megacones. The tips of the umbo and the connecting zone between megacone scales always remain green in the variegated cones. In the forest, the variegation was never found in the branches that carried the variegated cones, but in vegetatively propagated plants and some of the seedlings, variegation was also found in fast-growing leaders and side branches. Moreover, no progeny seedlings were completely albino or yellow, as would be expected if an albino egg were fertilized by an albino pollen grain. The variegation seems to be the outcome of a retarded expression of greening in fast-growing organs rather than from a chimera.
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הספר "אוצר וולקני"
אודות
תנאי שימוש
Nonchimeric variegated mutation in Cupressus sempervirens L.
165
Lev-Yadun, S.
Flaishman, M.A.
Atzmon, N.
Nonchimeric variegated mutation in Cupressus sempervirens L.
A single variegated mutant tree of Cupressus sempervirens found in a planted forest in Israel was propagated both vegetatively and by seeds, and the nature of the variegation was studied. In this mutant, expanding megacone ("female") scales (after pollination) in the forest and leaders of branches of the vegetatively propagated plants and some of the seedlings exhibit variegated yellow and green coloration instead of all green. The variegation is expressed in almost all megacones. The tips of the umbo and the connecting zone between megacone scales always remain green in the variegated cones. In the forest, the variegation was never found in the branches that carried the variegated cones, but in vegetatively propagated plants and some of the seedlings, variegation was also found in fast-growing leaders and side branches. Moreover, no progeny seedlings were completely albino or yellow, as would be expected if an albino egg were fertilized by an albino pollen grain. The variegation seems to be the outcome of a retarded expression of greening in fast-growing organs rather than from a chimera.
Scientific Publication
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