Cultures of excised rice roots modified by some growth regulators simultaneously utilizing two separate media.
نویسندگان
چکیده
منابع مشابه
Some Observations on Absorption of Cesium by Excised Barley Roots.
Because Cs 137 is one of the major long-lived products of nuclear fission, there is a growing interest in the uptake of cesium by plants and its subsequent introduction into food chains. At the same time. the fact that Cs is readily absorbed by plants from culture solutions makes it useful in studies of the general aspects of ion uptake. Its use has the additional advantage that the initial ces...
متن کاملSelenium absorption by excised Astragalus roots.
Absorption of selenate and selenite by excised roots of Astragalus Crotalariae, a selenium accumulator, and of A. lentiginosus, a non-accumulator, was favored by CaCl(2) and a pH of 4.0. The uptake of selenate and possibly selenite, is metabolically linked. Roots of a number of Astragalus species were examined, and in all cases selenate entered the roots much faster than selenite. In these shor...
متن کاملInhibition of Ca2+ and Zn2+ Uptake by Mn2+ in Excised Rice Roots
The effects of varying concentrations of Mn2* on the absorption of divalent cations, viz., Ca2+ and Zn2+ from 2 concentrations were studied. Mn2+ at all concentrations tested were inhibitory to Ca2+ uptake from 0.1 and 5 mM CaCl2 . However, when Ca2+ uptake was measured at concentrations ranging from 0.05 to 10 mM CaCl2, MnCl2 only at high concentration of 5 mM, inhibited Ca ab sorption. Zn2+ ...
متن کاملCytokinin and growth of excised roots of Bryophyllum calycinum.
Excised roots of Bryophyllum calycinum require for growth both auxin and cytokinin. This is demonstrated by the poor growth of 2-mm root tips in a basal medium of mineral salts, sucrose, and vitamins supplemented with either an auxin or a cytokinin, and much better growth when the basal medium is supplemented with both auxin and cytokinin. However, both substances are synthesized by the root, a...
متن کاملManganese absorption by excised barley roots.
Short-term absorption studies with 5-day-old excised barley roots revealed that the basic aspects of Mn absorption were similar to those of other metabolically absorbed cations. Following an initial non-metabolic equilibration with the root, Mn was absorbed for several hours at a slower steady-state rate comparable to that of other inorganic cations. Complete or nearly complete inhibition of th...
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ژورنال
عنوان ژورنال: Japanese Journal of Crop Science
سال: 1986
ISSN: 0011-1848,1349-0990
DOI: 10.1626/jcs.55.504