The Translocation of C<sup>14</sup>‐Labelled Photosynthetic Products from the Leaf to the Ear in Wheat

Stoy, Volkmar

doi:10.1111/j.1399-3054.1963.tb08363.x

Cited by 70 publications

(26 citation statements)

References 28 publications

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“…A temporary storage of material in the stem with subsequent movement to the ear during grain filling has also been reported (Birecka 1963;Stoy 1963Stoy , 1965Wardlaw and Porter 1967). Most of this storage occurs in the second internode below the ear.…”

Section: Introductionmentioning

confidence: 77%

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Translocation and Remobilization of 14c Assimilated At Different Stages by Each Leaf of the Wheat Plant

Rawson¹,

Hofstra²

1969

Aust. Jnl. Of Bio. Sci.

100

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SummaryThe movement of 14C assimilated by each leaf of the wheat plant was studied at successive stages of development from sowing to maturity. At each occasion assimilate moved to all parts of the plant but was translocated preferentially to the sink closest to the assimilating leaf. The function of supplying the developing leaves passed successively from expanded leaf to expanded leaf as the plant grew. Apart from this temporary phase of supplying the developing leaves, each exporting leaf fed in a specific direction with the lower leaves exporting downwards to the tillers and roots, and the upper leaves supplying the stem and ear. The tillers in this study never became completely independent from the main stem and, during the later stages of growth, a significant amount of 14C moved from the lower leaves of the main stem and was incorporated in the tiller ears.A small percentage of the 14C assimilated prior to ear emergence was finally remobilized to the ear of the main culm. More substantial amounts of 14C assimilated at ear emergence were remobilized to the main ear and the tiller ears during grain filling, but quantities were less than reported by other workers.

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Section: Introductionmentioning

confidence: 77%

“…After anthesis the pattern of assimilate movement is less complex. The flag leaf feeds almost entirely to the ear, whereas lower leaves supply the base and roots of the plant (Quinlan and Sagar 1962;Stoy 1963;Lupton 1966).…”

Section: Introductionmentioning

confidence: 99%

Translocation and Remobilization of 14c Assimilated At Different Stages by Each Leaf of the Wheat Plant

Rawson¹,

Hofstra²

1969

Aust. Jnl. Of Bio. Sci.

100

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“…However, the rate of stem respiration was found to be inadequate to account for all the stem sugar lost in either barley (Archbold 1945) or wheat (Stoy 1965). Moreover there is now some direct evidence of movement of material from the stem to the ear in the work of Murayama, Oshima, and Tsukahara (1961) with rice and Stoy(1963) with wheat using 14C-labelled assimilates. The present experiments were designed to examine more closely the redistribution of sugar carbon from the stems of wheat during grain development.…”

Section: Introduotionmentioning

confidence: 98%

The Redistribution of Stem Sugars in Wheat During Grain Development

Wardlaw¹,

Hk²

1967

Aust. Jnl. Of Bio. Sci.

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SummaryIn wheat, a study of the distribution of 14C assimilated by single leaves near the time of anthesis showed that, during ear development, sugars previously accumulated in the stem internodes were in part redistributed to other plant organs and in part probably converted to polysaccharides within the stem. Only a small proportion of the stem sugar (including fructosans) was lost in respiration. Upward movement of sugar" occurred almost entirely from the top two internodes only. The contribution to the final ear dry weight, however, was at the most only 5-10%. There was downward movement of sugars from the third and lower internodes and under the conditions of these experiments much of these went to newly formed tillers. There was little or no redistribution to the roots.

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“…Another expression of the distribution pattern is the fact that leaves in different positions on the plant may preferentially supply different growing organs with assimilates (Belikov, 1955, Belikov andKostetskii, 1964;Fujiwara and Suzuki, 1957;Quinlan and Sagar, 1962;Stoy, 1963;Williams, 1964;Wardlaw, 1965;Bonnemain, 1966;Lupton, 1966). The photosynthates for the roots are thus mainly produced in the lower leaves and those for the apical parts in the upper leaves, whereas leaves in an intermediate position deliver assimilates in both directions.…”

Section: B Possible Mechanisms To Explain Sink Actionmentioning

confidence: 99%

The Translocation of C¹⁴‐Labelled Photosynthetic Products from the Leaf to the Ear in Wheat

Cited by 70 publications

References 28 publications

Translocation and Remobilization of 14c Assimilated At Different Stages by Each Leaf of the Wheat Plant

Translocation and Remobilization of 14c Assimilated At Different Stages by Each Leaf of the Wheat Plant

The Redistribution of Stem Sugars in Wheat During Grain Development

Interrelationships Among Photosynthesis, Respiration, and Movement of Carbon in Developing Crops

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The Translocation of C14‐Labelled Photosynthetic Products from the Leaf to the Ear in Wheat

Cited by 70 publications

References 28 publications

Translocation and Remobilization of 14c Assimilated At Different Stages by Each Leaf of the Wheat Plant

Translocation and Remobilization of 14c Assimilated At Different Stages by Each Leaf of the Wheat Plant

The Redistribution of Stem Sugars in Wheat During Grain Development

Interrelationships Among Photosynthesis, Respiration, and Movement of Carbon in Developing Crops

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Product

Resources

About

The Translocation of C¹⁴‐Labelled Photosynthetic Products from the Leaf to the Ear in Wheat