Abstract
The agronomic characters and the disease incidence of black-spot disease of thirty-four varieties of non-heading Chinese cabbage were investigated.Results of the study were analyzed by main components and path analysis.Results showed that the correlationship between petiole-width,petiole thickness,petiole weight,chlorophyll,stem weight,leaf number and disease index showed significance at 5 % or 1% level of probability.Leaf weight,petiole weight,root weight,petiole(bottom,top,middle) width could explain 83.42% of agronomic characters and could reflect most information of the plant characters.The direct-negative effect of agronomic characters to disease index was chlorophyll leaf number leaf(width,length) path analysis petiole(width,thickness,weight).The greater the above index,the smaller the disease index,the higher the resistance to the disease of the species.
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 4
Claim · model-written summary
Several agronomic characters, including petiole traits, chlorophyll, stem weight and leaf number, correlate significantly with black-spot disease index.
- Taxon
- non-heading Chinese cabbage
Brassica rapa subsp. pekinensist0 - Organ / stage
- petiolee0
- Outcome
- disease indexe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the correlationship between petiole-width,petiole thickness,petiole weight,chlorophyll,stem weight,leaf number and disease index showed significance at 5 % or 1% level of probability”
t0“non-heading Chinese cabbage”
Claim · model-written summary
Leaf weight, petiole weight, root weight and petiole width explain 83.42% of the agronomic characters.
- Taxon
- non-heading Chinese cabbageBrassica rapa subsp. pekinensist0
- Outcome
- agronomic characterse1
- Value
- 83.42%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Leaf weight,petiole weight,root weight,petiole(bottom,top,middle) width could explain 83.42% of agronomic characters”
t0“non-heading Chinese cabbage”
Claim · model-written summary
Chlorophyll, leaf number, leaf width and length, and petiole traits have a direct negative effect on black-spot disease index.
- Taxon
- non-heading Chinese cabbageBrassica rapa subsp. pekinensist0
- Organ / stage
- petiolee2
- Outcome
- disease indexe2
- Direction
- direct-negativee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The direct-negative effect of agronomic characters to disease index was chlorophyll leaf number leaf(width,length) path analysis petiole(width,thickness,weight)”
t0“non-heading Chinese cabbage”
Claim · model-written summary
A greater agronomic index corresponds to a smaller disease index and higher resistance to the disease.
- Taxon
- non-heading Chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- the above indexe3
- Outcome
- disease indexe3
- Direction
- smallere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The greater the above index,the smaller the disease index,the higher the resistance to the disease of the species”
t0“non-heading Chinese cabbage”