Paper · 1990 · Madras Agricultural Journal

GENETIC VARIABILITY, INTERRELATIONSHIP AND PATH ANALYSIS OF YIELD AND YIELD CHARACTERS IN EARLY MATURING INDICA AND JAPONICA RICE GENOTYPES

AMIRTHADEVARATHINAM A

10
claims
20
verbatim quotes
1
citations
2
research areas
✓
Open access · cc-by

Abstract

Indicas were characterised by greater values of mean, range and variance components for yield and yield characters. The GCV was the highest for grains per panicle followed by tiller number, culm length and seedling height in both indicas and japonicas. The genetic advance was also high for those characters with high variability. Both additive and non-additive gene actions were important in the expression of characters in both the botanic varieties. Days to 50 per cent flowering, tiller number and panicle length were positively correlated with plant yield in Indicas. In japonicas, days to 50 per cent flowering showed a positive association while tiller number showed a negative association with plant yield. Selection for panicle length would serve as the best criterion for plant yield in both Indicas and japonicas. Path analysis of yield components showed that seedling height and culm length had considerable direct effect in both indioas and japonicas. In addition, tiller number in indicas and days to 50 per cent flowering in japonicas had positive direct effect.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

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Claims 10

Observationobservedoriginal resultmeasured

Claim · model-written summary

Indicas had greater mean, range and variance for yield and yield characters.

Material
Indicase0
Outcome
mean, range and variance components for yield and yield characterse0
Direction
greatere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Indicas were characterised by greater values of mean, range and variance components for yield and yield characters.”

✓ located verbatim in the source · abstract, characters 0–115 · show in text ↑
t0

“RICE”

✓ located verbatim in the source · title, characters 125–129 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Both rice groups had the highest GCV for grains per panicle, followed by tiller number, culm length and seedling height.

Material
indicas and japonicase0
Outcome
GCVe0
Direction
higheste0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The GCV was the highest for grains per panicle followed by tiller number, culm length and seedling height in both indicas and japonicas.”

✓ located verbatim in the source · abstract, characters 116–252 · show in text ↑
t0

“RICE”

✓ located verbatim in the source · title, characters 125–129 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Genetic advance was high for rice characters with high variability.

Outcome
genetic advancee0
Direction
highe0
Qualifier
characters with high variabilitye0

Not reportedMaterialGeneCompoundOrgan / stageInteractorTreatmentComparatorSetting

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The genetic advance was also high for those characters with high variability.”

✓ located verbatim in the source · abstract, characters 253–330 · show in text ↑
t0

“RICE”

✓ located verbatim in the source · title, characters 125–129 · show in text ↑
Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

Both additive and non-additive gene actions contributed to characters in both rice varieties.

Outcome
expression of characterse0
Qualifier
Both additive and non-additive gene actionse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Both additive and non-additive gene actions were important in the expression of characters in both the botanic varieties.”

✓ located verbatim in the source · abstract, characters 331–452 · show in text ↑
t0

“RICE”

✓ located verbatim in the source · title, characters 125–129 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Flowering time, tiller number and panicle length correlated positively with plant yield in Indicas.

Material
Indicase0
Organ / stage
Days to 50 per cent flowering, tiller number and panicle lengthe0
Outcome
plant yielde0
Direction
positively correlatede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Days to 50 per cent flowering, tiller number and panicle length were positively correlated with plant yield in Indicas.”

✓ located verbatim in the source · abstract, characters 453–572 · show in text ↑
t0

“RICE”

✓ located verbatim in the source · title, characters 125–129 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Flowering time correlated positively with plant yield in japonicas.

Material
japonicase0
Organ / stage
days to 50 per cent floweringe0
Outcome
plant yielde0
Direction
positive associatione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“In japonicas, days to 50 per cent flowering showed a positive association while tiller number showed a negative association with plant yield.”

✓ located verbatim in the source · abstract, characters 573–714 · show in text ↑
t0

“RICE”

✓ located verbatim in the source · title, characters 125–129 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Tiller number correlated negatively with plant yield in japonicas.

Material
japonicase0
Organ / stage
tiller numbere0
Outcome
plant yielde0
Direction
negative associatione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“In japonicas, days to 50 per cent flowering showed a positive association while tiller number showed a negative association with plant yield.”

✓ located verbatim in the source · abstract, characters 573–714 · show in text ↑
t0

“RICE”

✓ located verbatim in the source · title, characters 125–129 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Panicle length was recommended as the best selection criterion for yield in both rice groups.

Material
Indicas and japonicase0
Outcome
Selection for panicle lengthe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Selection for panicle length would serve as the best criterion for plant yield in both Indicas and japonicas.”

✓ located verbatim in the source · abstract, characters 715–824 · show in text ↑
t0

“RICE”

✓ located verbatim in the source · title, characters 125–129 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Seedling height and culm length had considerable direct effects on yield components in both rice groups.

Organ / stage
seedling height and culm lengthe0
Outcome
yield componentse0
Direction
considerable direct effecte0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Path analysis of yield components showed that seedling height and culm length had considerable direct effect in both indioas and japonicas.”

✓ located verbatim in the source · abstract, characters 825–964 · show in text ↑
t0

“RICE”

✓ located verbatim in the source · title, characters 125–129 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Tiller number in indicas and flowering time in japonicas had positive direct effects on yield.

Organ / stage
tiller number in indicas and days to 50 per cent flowering in japonicase0
Outcome
positive direct effecte0
Direction
positivee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“In addition, tiller number in indicas and days to 50 per cent flowering in japonicas had positive direct effect.”

✓ located verbatim in the source · abstract, characters 965–1077 · show in text ↑
t0

“RICE”

✓ located verbatim in the source · title, characters 125–129 · show in text ↑