Abstract
SEEDS of the Egyptian rice cultivar Sakha 105 were treated withthree gamma radiation doses; 15, 20 and 25 Kr to study the effect of gamma irradiation doses in the process of mutation on the growth, yield and yield-related characters of sakha 105 rice cultivar as well as to induce genetic variability for selecting plants with desirable character. The effect of gamma –rays was observed in M1 and M2 generation for all the studied traits except panicle length in M1 and 1000-grain weight in both generations. The dose of 15 Kr recorded the highest mean value of heading date and plant height in both generation and number of panicles/plant in M1 generation, this may be due to stimulatory effects of the low doses of gamma-rays which decrease with the increase of gamma irradiation dose. The dose of 20 Kr recorded significantly higher fertility percentage and number of branches/panicle in M2 generation and number of panicles/plant in M1 generation. The dose of 25Kr produced the highest number of panicles/plant and number of spikelets/panicle in M2 generation with in-significance difference with the control. While, it produced the lowest mean values for grain yield, number of filled grains/panicle, heading date and plant height in both generations. All the mutagenic treatments detected significantly lower grain yield than the un-treated plants in both generation. The measurements of variation were, in general, higher in the treated plants compared with the control. Such estimates were maximized in case of fertility percentage, number of filled grains/panicle and grain yield. Among all treatments, the dose of 25Kr gamma radiation detected the highest variation.
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 9
Claim · model-written summary
Gamma rays affected studied traits in M1 and M2 except M1 panicle length and 1000-grain weight in both generations.
- Taxon
- rice
Oryza sativat0 - Treatment
- gamma –rayse0
- Outcome
- all the studied traits except panicle length in M1 and 1000-grain weight in both generationse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of gamma –rays was observed in M1 and M2 generation for all the studied traits except panicle length in M1 and 1000-grain weight in both generations.”
t0“Rice”
Claim · model-written summary
The 15 Kr dose gave the highest heading date and plant height in both generations.
- Taxon
- riceOryza sativat0
- Material
- Sakha 105e1
- Treatment
- 15 Kre0
- Outcome
- heading date and plant heighte0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dose of 15 Kr recorded the highest mean value of heading date and plant height in both generation”
e1“the Egyptian rice cultivar Sakha 105”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
The 20 Kr dose gave significantly higher fertility percentage and branches per panicle in M2.
- Taxon
- riceOryza sativat0
- Treatment
- 20 Kre0
- Outcome
- fertility percentage and number of branches/paniclee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dose of 20 Kr recorded significantly higher fertility percentage and number of branches/panicle in M2 generation”
t0“Rice”
Claim · model-written summary
The 20 Kr dose gave significantly higher panicles per plant in M1.
- Taxon
- riceOryza sativat0
- Treatment
- 20 Kre0
- Outcome
- number of panicles/plante0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dose of 20 Kr recorded significantly higher fertility percentage and number of branches/panicle in M2 generation and number of panicles/plant in M1 generation.”
t0“Rice”
Claim · model-written summary
The 25Kr dose produced the highest M2 panicles and spikelets per panicle, without a significant control difference.
- Taxon
- riceOryza sativat0
- Treatment
- 25Kre0
- Outcome
- number of panicles/plant and number of spikelets/paniclee0
- Direction
- higheste0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dose of 25Kr produced the highest number of panicles/plant and number of spikelets/panicle in M2 generation with in-significance difference with the control.”
t0“Rice”
Claim · model-written summary
The 25Kr dose gave the lowest grain yield, filled grains, heading date and plant height in both generations.
- Taxon
- riceOryza sativat0
- Treatment
- 25Kre1
- Outcome
- grain yield, number of filled grains/panicle, heading date and plant heighte0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it produced the lowest mean values for grain yield, number of filled grains/panicle, heading date and plant height in both generations.”
e1“The dose of 25Kr produced the highest number of panicles/plant and number of spikelets/panicle in M2 generation with in-significance difference with the control.”
t0“Rice”
Claim · model-written summary
Every mutagenic treatment significantly lowered grain yield relative to untreated rice in both generations.
- Taxon
- riceOryza sativat0
- Treatment
- mutagenic treatmentse0
- Outcome
- grain yielde0
- Direction
- lowere0
- Comparator
- un-treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the mutagenic treatments detected significantly lower grain yield than the un-treated plants in both generation.”
t0“Rice”
Claim · model-written summary
Treated rice generally showed greater variation than controls, especially for fertility, filled grains and grain yield.
- Taxon
- riceOryza sativat0
- Treatment
- treated plantse0
- Outcome
- measurements of variatione0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The measurements of variation were, in general, higher in the treated plants compared with the control. Such estimates were maximized in case of fertility percentage, number of filled grains/panicle and grain yield.”
t0“Rice”
Claim · model-written summary
The 25Kr gamma dose produced the greatest variation among treatments.
- Taxon
- riceOryza sativat0
- Treatment
- 25Kr gamma radiatione0
- Outcome
- variatione0
- Direction
- higheste0
- Comparator
- all treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among all treatments, the dose of 25Kr gamma radiation detected the highest variation.”
t0“Rice”