Abstract
Isolation of clonal cocoa material in screened shade houses for 6 months allows adequate opportunity for detecting vascular‐streak dieback caused by Oncobasidium theobromae and in Papua New Guinea a further period of 6 months in intermediate quarantine on an isolated island has been replaced by a similar period in screened houses at a quarantine station in the importing locality. Microscopic examination of transverse sections of budwood sticks and pod stalks provides a further very thorough precaution against disease transmission because hyphae of the pathogen are large and easily detected. Hyphae were found within the stalks and placentae of pods from diseased branches but seeds from these germinated normally and there was no evidence of seed transmission. Dipping rubbed seeds in 1 g/l propiconazole plus 5 g/l metalaxyl caused a small but statistically significant reduction in seedling stem height. However, root length and percentage germination were not affected and this prophylactic seed treatment may be useful in situations where quarantine authorities require additional precautions.
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Claims 8
Claim · model-written summary
Six months in screened shade houses permitted detection of vascular-streak dieback in clonal cocoa.
- Taxon
- cocoa
Theobroma cacaoe0 - Interactor
- Oncobasidium theobromaeCeratobasidium theobromaee0pathogen
- Outcome
- detecting vascular‐streak diebacke0
- Setting
- screened shade housese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cocoa”
e0“Isolation of clonal cocoa material in screened shade houses for 6 months allows adequate opportunity for detecting vascular‐streak dieback caused by Oncobasidium theobromae”
Claim · model-written summary
Microscopy of budwood and pod stalk sections provided a precaution against cocoa disease transmission.
- Taxon
- CocoaTheobroma cacaot0
- Organ / stage
- budwood sticks and pod stalkse0
- Outcome
- precaution against disease transmissione0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cocoa”
e0“Microscopic examination of transverse sections of budwood sticks and pod stalks provides a further very thorough precaution against disease transmission because hyphae of the pathogen are large and easily detected”
Claim · model-written summary
Hyphae occurred in stalks and placentae of pods from diseased cocoa branches.
- Taxon
- CocoaTheobroma cacaot0
- Organ / stage
- stalks and placentae of podse0
- Outcome
- Hyphae were found within the stalks and placentae of podse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cocoa”
e0“Hyphae were found within the stalks and placentae of pods from diseased branches”
Claim · model-written summary
Seeds from diseased cocoa branches germinated normally.
- Taxon
- CocoaTheobroma cacaot0
- Organ / stage
- seedse0
- Outcome
- germinated normallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cocoa”
e0“seeds from these germinated normally”
Claim · model-written summary
No cocoa seed transmission was found.
- Taxon
- CocoaTheobroma cacaot0
- Outcome
- no evidence of seed transmissione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cocoa”
e0“there was no evidence of seed transmission”
Claim · model-written summary
Fungicide dipping slightly reduced cocoa seedling stem height.
- Taxon
- CocoaTheobroma cacaot0
- Organ / stage
- seedlinge0
- Treatment
- Dipping rubbed seeds in 1 g/l propiconazole plus 5 g/l metalaxyle0
- Outcome
- seedling stem heighte0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cocoa”
e0“Dipping rubbed seeds in 1 g/l propiconazole plus 5 g/l metalaxyl caused a small but statistically significant reduction in seedling stem height”
Claim · model-written summary
The seed treatment did not affect cocoa root length or germination percentage.
- Taxon
- CocoaTheobroma cacaot0
- Treatment
- this prophylactic seed treatmente1
- Outcome
- root length and percentage germinatione0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cocoa”
e0“root length and percentage germination were not affected”
e1“this prophylactic seed treatment”
Claim · model-written summary
The authors suggest prophylactic seed treatment where quarantine authorities require added precautions.
- Taxon
- CocoaTheobroma cacaot0
- Outcome
- this prophylactic seed treatment may be usefule0
- Qualifier
- where quarantine authorities require additional precautionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cocoa”
e0“this prophylactic seed treatment may be useful in situations where quarantine authorities require additional precautions”
The same questions in other papers
seed treatment · growth · Theobroma cacao (cocoa)Positive and negative results
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application · growth · Theobroma cacao (cocoa)Positive and negative results
6 in the opposite direction
- positive
- positive
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3 papers more in this group
See all 7 papers →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.