Effects of Exogenous Materials on Pollen Tube Growth in Lilium longiflorum Pistils
نویسندگان
چکیده
منابع مشابه
Effects of exogenous materials on pollen tube growth in Lilium longiflorum pistils.
With the use of stigmatic exudate or distilled water as carriers, various antimetabolites, inhibitors, and miscellaneous materials were injected into the hollow styles of detached Lilium longiflorum pistils before, at, or after compatible or incompatible pollination. Pollen tube lengths were measured 48 hr after pollination with pollinated styles incubated at 22-23 degrees C. Substances conside...
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Compatible and incompatible pollen tubes growing on detached Lilium longiflorum pistils which had been prelabeled with myoinositol-U-(14)C take up a portion of the label and utilize it for biosynthesis of tube wall substance. The label is transferred from pistil to pollen tubes apparently via the secretion products (exudate) of the pistil. The exudate thus appears to have a major nutritional ro...
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It is possible to obtain pollen germination and pollen tube growth in vitro if boric acid is present. In this work the effect was studied using as a semiquantitative parameter the mean length (J) o f Lilium longißorum pollen tubes. Pollen tube growth was examinated in depend ence on boric acid, ortho-silicic acid, nucleic bases, Ca2+ and Zn2+ in 10% sucrose solution. The maximum o f 7is obtain...
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Transmission electron microscopy of pollen from Lilium longiflorum Thunb. reveals electron-dense inclusions in storage body organelles ubiquitous in the cytosol. In ungerminated pollen, these inclusions are rounded in appearance and appressed to the inner surface of the smooth membrane of the storage body. During pollen germination, these inclusions become less rounded, smaller, and enclosed in...
متن کاملPhytic Acid Metabolism in Lily (Lilium longiflorum Thunb.) Pollen.
The accumulation of phytic acid during development of lily (Lilium longiflorum Thunb.) pollen and its degradation during germination have been studied. A substantial amount of phytic acid accumulates in lily pollen by 5 days before anthesis, and little change occurs during subsequent maturation. Mature lily pollen contains 7 to 8 micrograms phytic acid per milligram pollen. Considerable degrada...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 1981
ISSN: 0091-6765
DOI: 10.2307/3429258