Abstract
SummarySenescence in excised orange leaves is characterized by a loss of chlorophyll, particularly chlorophyll, and an increase in amylolitic activity, which appears to be the most sensitive index to detect senescence. On the other hand, leaf proteins do not decrease appreciably, which contrasts with the behaviour of attached leaves and suggests that proteolysis does not play a central role in the senescence of these leaves but is a consequence of competition from nearby actively growing organs. Gibberellic acid and indole-3-acetic acid, but not kinetin, are able to delay leaf senescence, the effect of the former being more appreciable. GA delays the loss of chlorophyll for more than a fortnight, but only delays the characteristic rise in amylase activity for about 48 h.
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Claims 8
Claim · model-written summary
Senescing excised orange leaves lost chlorophyll.
Verbatim
e0“Senescence in excised orange leaves is characterized by a loss of chlorophyll”
Claim · model-written summary
Senescing excised orange leaves increased amylolitic activity.
Verbatim
e0“an increase in amylolitic activity, which appears to be the most sensitive index to detect senescence”
t0“Orange Leaves”
Claim · model-written summary
Excised orange leaf proteins did not decrease appreciably during senescence.
Verbatim
e0“leaf proteins do not decrease appreciably”
t0“Orange Leaves”
Claim · model-written summary
Gibberellic acid delayed orange leaf senescence, more appreciably than indole-3-acetic acid.
Verbatim
e0“Gibberellic acid and indole-3-acetic acid, but not kinetin, are able to delay leaf senescence, the effect of the former being more appreciable”
t0“Orange Leaves”
Claim · model-written summary
Indole-3-acetic acid delayed orange leaf senescence.
Not reportedComparator
Verbatim
e0“Gibberellic acid and indole-3-acetic acid, but not kinetin, are able to delay leaf senescence”
t0“Orange Leaves”
Claim · model-written summary
Kinetin did not delay orange leaf senescence.
Not reportedComparatorDirection
Verbatim
e0“Gibberellic acid and indole-3-acetic acid, but not kinetin, are able to delay leaf senescence”
t0“Orange Leaves”
Claim · model-written summary
GA delayed chlorophyll loss in orange leaves for more than a fortnight.
Not reportedComparator
Verbatim
e0“GA delays the loss of chlorophyll for more than a fortnight”
t0“Orange Leaves”
Claim · model-written summary
GA delayed the rise in orange leaf amylase activity for about 48 h.
Not reportedComparator
Verbatim
e0“GA delays the loss of chlorophyll for more than a fortnight, but only delays the characteristic rise in amylase activity for about 48 h”
t0“Orange Leaves”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.