Abstract
SUMMARY Cysts of three different size grades provided three series of six different inoculum levels of Heterodera rostochiensis on Solanum demissum. The cyst numbers were adjusted so that the infestation levels in terms of eggs per gram of soil were the same in each series at any one inoculum level. Thus, the inoculum was dispersed within many small cysts, several medium cysts or few large ones. The different dispersion of the infestation had little effect on the final eelworm population. New cysts produced in the experiment were size‐graded and their total egg content and hatchable larval content were estimated. Neither size‐grade of the inoculum cysts nor the level of infestation had any effect on the content or hatchability of the graded new cysts. Percentage hatch appeared to decline with increase of cyst size; no useful decrease in hatching variability was achieved by using graded new cysts in hatching tests. The smallest new cysts (< 0.295 mm.) contained an average of sixty‐four eggs; such cysts are easily overlooked in soil samples.
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Claims 7
Claim · model-written summary
Infestation dispersion had little effect on final nematode population.
- Taxon
- Solanum demissum
Solanum demissumt0 - Treatment
- different dispersion of the infestatione0
- Interactor
- Heterodera rostochiensis
Globodera rostochiensist0pathogen - Outcome
- final eelworm populatione0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The different dispersion of the infestation had little effect on the final eelworm population”
t0“Heterodera rostochiensis (Woll. 1923) on Solanum demissum”
Claim · model-written summary
Inoculum cyst size did not affect content or hatchability of new cysts.
- Taxon
- Solanum demissumSolanum demissumt0
- Treatment
- size‐grade of the inoculum cystse0
- Interactor
- Heterodera rostochiensisGlobodera rostochiensist0pathogen
- Outcome
- content or hatchability of the graded new cystse0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither size‐grade of the inoculum cysts nor the level of infestation had any effect on the content or hatchability of the graded new cysts”
t0“Heterodera rostochiensis (Woll. 1923) on Solanum demissum”
Claim · model-written summary
Infestation level did not affect content or hatchability of new cysts.
- Taxon
- Solanum demissumSolanum demissumt0
- Treatment
- level of infestatione0
- Interactor
- Heterodera rostochiensisGlobodera rostochiensist0pathogen
- Outcome
- content or hatchability of the graded new cystse0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither size‐grade of the inoculum cysts nor the level of infestation had any effect on the content or hatchability of the graded new cysts”
t0“Heterodera rostochiensis (Woll. 1923) on Solanum demissum”
Claim · model-written summary
Percentage hatch appeared to decline as cyst size increased.
- Taxon
- Solanum demissumSolanum demissumt0
- Interactor
- Heterodera rostochiensisGlobodera rostochiensist0pathogen
- Outcome
- Percentage hatche0
- Direction
- declinee0
- Comparator
- cyst sizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percentage hatch appeared to decline with increase of cyst size”
t0“Heterodera rostochiensis (Woll. 1923) on Solanum demissum”
Claim · model-written summary
Grading new cysts did not usefully reduce hatching variability.
- Taxon
- Solanum demissumSolanum demissumt0
- Interactor
- Heterodera rostochiensisGlobodera rostochiensist0pathogen
- Outcome
- hatching variabilitye0
- Direction
- no useful decreasee0
- Comparator
- graded new cystse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no useful decrease in hatching variability was achieved by using graded new cysts in hatching tests”
t0“Heterodera rostochiensis (Woll. 1923) on Solanum demissum”
Claim · model-written summary
The smallest new cysts contained an average of 64 eggs.
- Taxon
- Solanum demissumSolanum demissumt0
- Interactor
- Heterodera rostochiensisGlobodera rostochiensist0pathogen
- Outcome
- contained an average of sixty‐four eggse0
- Value
- sixty‐four eggse0
- Qualifier
- < 0.295 mm.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The smallest new cysts (< 0.295 mm.) contained an average of sixty‐four eggs”
t0“Heterodera rostochiensis (Woll. 1923) on Solanum demissum”
Claim · model-written summary
The smallest new cysts were easily overlooked in soil samples.
- Taxon
- Solanum demissumSolanum demissumt0
- Interactor
- Heterodera rostochiensisGlobodera rostochiensist0pathogen
- Outcome
- easily overlooked in soil samplese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“such cysts are easily overlooked in soil samples”
t0“Heterodera rostochiensis (Woll. 1923) on Solanum demissum”