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“decrease in dry weight”

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1960s 54

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Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Auxin delayed decrease in dry weight in bean petioles.

Taxon: BEANt0
Treatment: Auxine0
Outcome: decrease in dry weighte0
Direction: delayede0

Not reportedComparator

Verbatim

e0
“Auxin delayed abscission and also delayed the initial increase in calcium, the movement of calcium from the abscission zone to the petiole, and the decrease in dry weight”
✓ located verbatim in the source · abstract, characters 913–1083

t0
“THE BEAN”
✓ located verbatim in the source · title, characters 55–63

Title

A HISTOCHEMICAL STUDY OF ABSCISSION LAYER FORMATION IN THE BEAN

H. P. Rasmussen; M. J. Bukovac American Journal of Botany 1969. doi:10.1002/j.1537-2197.1969.tb07508.x

Other claims from this paper (13)

Observation Calcium increased in the abscission zone of debladed bean petioles during the 14 hr induction period.
Observation Dry weight increased in the abscission zone during the 14 hr induction period.
Observation Before layer appearance, calcium decreased in the abscission zone.
Observation Before layer appearance, calcium increased in the petiole.
Observation Dry matter decreased in abscission zone and petiole 24 hr after deblading.
Observation Pectic material swelling was the first visual change in abscission zone cells.
Observation Non-cellulosic polysaccharides and cellulose subsequently broke down.
Observation Cellulose adjacent and distal to the layer was altered.
Observation No lignin was present during layer development.
Mechanism Cell wall component changes caused abscission layer cells to collapse before separation.
Intervention effect Auxin delayed abscission in bean petioles.
Intervention effect Auxin delayed initial increase in calcium in bean petioles.
Intervention effect Auxin delayed movement of calcium from the abscission zone to the petiole in bean petioles.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Total dry weight per plot tended to decrease with each increment of potassium above 3.32 pounds.

Taxon: tobaccoNicotiana tabacume0
Treatment: increment of potassium above 3.32 poundse3
Outcome: total dry weight per plote3
Direction: tended to decreasee3

Not reportedComparator

Verbatim

e0
“In a tobacco greenhouse experiment”
✓ located verbatim in the source · abstract, characters 0–34

e3
“dry weight of tops, height of plant, leaf area, and total dry weight per plot tended to decrease with each increment of potassium above 3.32 pounds”
✓ located verbatim in the source · abstract, characters 402–549

Title

EFFECTS OF POTASSIUM AND CHLORINE ON THE PRODUCTION OF TOBACCO SEEDLINGS

J. M. Elliot; M. Elizabeth Back Canadian Journal of Soil Science 1963. doi:10.4141/cjss63-033

Other claims from this paper (7)

Intervention effect The 3.32-pound potassium rate gave the greatest total dry weight and survival of tobacco seedlings.
Intervention effect Dry weight of tops, plant height and leaf area tended to decrease with each increment of potassium above 3.32 pounds.
Mechanism High potassium levels increased soluble salts in the muck to a level that retarded tobacco seedling growth.
Observation Tobacco plants took up more potassium than the 3.32-pound rate supplied, as the muck released large amounts of potassium.
Intervention effect Chlorine in the fertilizer increased total ash and potassium content of tobacco seedlings.
Intervention effect Chlorine in the fertilizer tended to decrease nitrogen content of tobacco seedlings.
Intervention effect Potassium and chlorine had no effect on the weight of tobacco roots or on relative turgidity.

Associationobservedoriginal resultmeasured

Claim · model-written summary

The larger the growth of tuber slices, the larger the decrease in their dry weight.

Taxon: Jerusalem artichokeHelianthus tuberosuse0
Organ / stage: tubere0
Outcome: dry weight of the tissuee4
Direction: decreasee4

Verbatim

e0
“Using tissue slices excised from cold-stored Jerusalem artichoke tuber, the following results were obtained in connection with the growth as determined by relative wet weight increase”
✓ located verbatim in the source · abstract, characters 0–183

e4
“The larger the growth, the larger the decrease in dry weight of the tissue”
✓ located verbatim in the source · abstract, characters 628–702

Title

Auxin-induced Growth of Tuber Tissue of Jerusalem Artichoke I

Yoshio MASUDA Shokubutsugaku Zasshi 1965. doi:10.15281/jplantres1887.78.417

Other claims from this paper (8)

Intervention effect 2,4-D plus kinetin caused remarkable growth of tuber slices, more than 2,4-D alone.
Intervention effect 2,4-D alone caused less remarkable growth of tuber slices than 2,4-D plus kinetin.
Intervention effect Kinetin alone caused no appreciable growth of tuber slices.
Intervention effect Pre-washing the slices in water for 15 to 20 hours increased the growth caused by 2,4-D with or without kinetin.
Intervention effect Washing the slices in gibberellic acid solution was more effective for growth than washing in water.
Observation Inulin in the cells disappeared during 50 hours of growth of the tissue slices.
Mechanism Growth promotion by gibberellic acid and kinetin does not seem to be due to enhanced auxin absorption by the tissue.
Observation The osmotic value of the cells did not change during washing or during expansion growth.

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“decrease in dry weight”

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1960s 54