Abstract
Abstract To improve simulation of epidemics of peanut rust, information on the effects of leaf age and pustule eruption dynamics is needed. An analysis was made of the change of leaf susceptibility of rust with leaf aging using plants exposed to field inoculum. The youngest leaf was most susceptible to rust infection. As leaves aged, susceptibility decreased quickly. The relationship of infection frequency (Y, relative number of pustules) to leaf age (X, leaf position downward on the main stem) was described by a mathematical model Y = 2.17X(-0.83). The dynamics of pustule eruption also was studied using artificial inoculation. Analysis showed that after inoculation, pustule eruption over time was distributed in a logistic pattern. Rust eruption began at 130 and reach a peek at 250 rust degree days—that is, between 7 and 15 d after inoculation. Mathematical models of leaf age-related susceptibility and rust eruption dynamics will be incorporated into simulation model of rust epidemics.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
The youngest peanut leaf was most susceptible to rust infection.
- Taxon
- Peanut
Arachis hypogaeat0 - Organ / stage
- youngest leafe2
- Interactor
- ruste2pathogen
- Outcome
- rust infectione2
- Direction
- most susceptiblee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanut”
e2“The youngest leaf was most susceptible to rust infection”
Claim · model-written summary
Peanut susceptibility to rust decreased quickly as leaves aged.
- Taxon
- PeanutArachis hypogaeat0
- Organ / stage
- leaves agede3
- Interactor
- ruste2pathogen
- Outcome
- susceptibilitye3
- Direction
- decreasede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanut”
e2“The youngest leaf was most susceptible to rust infection”
e3“As leaves aged, susceptibility decreased quickly”
Claim · model-written summary
Infection frequency of peanut rust was described by the model Y = 2.17X(-0.83) in relation to leaf age.
- Taxon
- PeanutArachis hypogaeat0
- Outcome
- infection frequencye4
- Value
- Y = 2.17X(-0.83)e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanut”
e4“The relationship of infection frequency (Y, relative number of pustules) to leaf age (X, leaf position downward on the main stem) was described by a mathematical model Y = 2.17X(-0.83)”
Claim · model-written summary
Pustule eruption over time after inoculation of peanut followed a logistic pattern.
- Taxon
- PeanutArachis hypogaeat0
- Interactor
- ruste1pathogen
- Outcome
- pustule eruption over timee5
- Qualifier
- distributed in a logistic patterne5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanut”
e1“To improve simulation of epidemics of peanut rust”
e5“pustule eruption over time was distributed in a logistic pattern”
Claim · model-written summary
Rust eruption began at 130 rust degree days on peanut.
- Taxon
- PeanutArachis hypogaeat0
- Interactor
- Ruste6pathogen
- Outcome
- Rust eruption begane6
- Value
- 130e6
- Qualifier
- rust degree dayse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanut”
e6“Rust eruption began at 130 and reach a peek at 250 rust degree days”
Claim · model-written summary
Rust eruption on peanut peaked at 250 rust degree days, between 7 and 15 d after inoculation.
- Taxon
- PeanutArachis hypogaeat0
- Outcome
- peeke6
- Value
- 250e6
- Qualifier
- between 7 and 15 d after inoculatione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Peanut”
e6“Rust eruption began at 130 and reach a peek at 250 rust degree days”
e7“between 7 and 15 d after inoculation”