Abstract
The F2 seeds of two rice crosses, Himalaya 1 x Phul Patas 72 and Himalaya 1 x China 988, were irradiated with 25 kR gamma-rays. The mean values of F2M1 generation decreased as compared to F2 for plant height, spikelet fertility and grain yield in both the crosses, and for panicle length and 100-grain weight only in the cross Himalaya 1 X China 988. On the other hand, mean values in the F3M2 generation for spikelet fertility and grain yield increased in both crossesas compared to F3. However, the variance of F3M2 generations did not differ significantly from that of F3 generation in both the crosses for the characters studied, except for grain yield in the cross Himalaya 1 x China 988. Estimates of heritability and genetic advance in F3M2 were lower than in the corresponding F3 for all the traits in the cross Himalaya 1 x Phul Patas 72, except for plant height and 100-grain weight. However, the estimates of heritability and genetic advance in the F3M2 generation were higher than in F3 generation for all characters, except 100-grain weight and grain yield in the cross Himalaya 1 X China 988. The study also revealed that irradiation has differential effect on the same character depending on the genetic background of the test/segregating material.
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Claims 7
Claim · model-written summary
F2M1 plant height, spikelet fertility, and grain yield decreased versus F2 in both crosses.
- Taxon
- rice
Oryza sativat0 - Treatment
- 25 kR gamma-rayse1
- Outcome
- plant height, spikelet fertility and grain yielde0
- Direction
- decreasede0
- Comparator
- F2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean values of F2M1 generation decreased as compared to F2 for plant height, spikelet fertility and grain yield in both the crosses”
t0“rice”
e1“The F2 seeds of two rice crosses, Himalaya 1 x Phul Patas 72 and Himalaya 1 x China 988, were irradiated with 25 kR gamma-rays.”
Claim · model-written summary
F2M1 panicle length and 100-grain weight decreased only in Himalaya 1 × China 988.
- Taxon
- riceOryza sativat0
- Material
- Himalaya 1 X China 988e0
- Treatment
- 25 kR gamma-rayse1
- Outcome
- panicle length and 100-grain weighte0
- Direction
- decreasede2
- Comparator
- F2e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and for panicle length and 100-grain weight only in the cross Himalaya 1 X China 988”
t0“rice”
e1“The F2 seeds of two rice crosses, Himalaya 1 x Phul Patas 72 and Himalaya 1 x China 988, were irradiated with 25 kR gamma-rays.”
e2“The mean values of F2M1 generation decreased as compared to F2 for plant height, spikelet fertility and grain yield in both the crosses”
Claim · model-written summary
F3M2 spikelet fertility and grain yield increased versus F3 in both crosses.
- Taxon
- riceOryza sativat0
- Treatment
- 25 kR gamma-rayse1
- Outcome
- spikelet fertility and grain yielde0
- Direction
- increasede0
- Comparator
- F3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean values in the F3M2 generation for spikelet fertility and grain yield increased in both crossesas compared to F3”
t0“rice”
e1“The F2 seeds of two rice crosses, Himalaya 1 x Phul Patas 72 and Himalaya 1 x China 988, were irradiated with 25 kR gamma-rays.”
Claim · model-written summary
F3M2 variance generally did not differ significantly from F3.
- Taxon
- riceOryza sativat0
- Outcome
- variance of F3M2 generationse0
- Direction
- did not differe0
- Qualifier
- except for grain yield in the cross Himalaya 1 x China 988e0
- Comparator
- F3 generatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the variance of F3M2 generations did not differ significantly from that of F3 generation in both the crosses for the characters studied, except for grain yield in the cross Himalaya 1 x China 988”
t0“rice”
Claim · model-written summary
F3M2 heritability and genetic advance were lower than F3 in Himalaya 1 × Phul Patas 72 for most traits.
- Taxon
- riceOryza sativat0
- Material
- Himalaya 1 x Phul Patas 72e0
- Outcome
- heritability and genetic advancee0
- Direction
- lowere0
- Qualifier
- except for plant height and 100-grain weighte0
- Comparator
- F3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Estimates of heritability and genetic advance in F3M2 were lower than in the corresponding F3 for all the traits in the cross Himalaya 1 x Phul Patas 72, except for plant height and 100-grain weight”
t0“rice”
Claim · model-written summary
F3M2 heritability and genetic advance were higher than F3 in Himalaya 1 × China 988 for most traits.
- Taxon
- riceOryza sativat0
- Material
- Himalaya 1 X China 988e0
- Outcome
- heritability and genetic advancee0
- Direction
- highere0
- Qualifier
- except 100-grain weight and grain yielde0
- Comparator
- F3 generatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“estimates of heritability and genetic advance in the F3M2 generation were higher than in F3 generation for all characters, except 100-grain weight and grain yield in the cross Himalaya 1 X China 988”
t0“rice”
Claim · model-written summary
The authors concluded irradiation effects vary with genetic background.
- Taxon
- riceOryza sativat0
- Treatment
- irradiatione0
- Outcome
- differential effect on the same charactere0
- Qualifier
- genetic backgrounde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irradiation has differential effect on the same character depending on the genetic background of the test/segregating material”
t0“rice”
The same questions in other papers
radiation · yield · Oryza sativa (rice)Results differ
26 papers in the same direction as this paper · 15 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
39 papers more in this group
See all 43 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.