Abstract
Air- dried seeds of rice variety ZR9 were carried by high altitude ballcon(HAB)into highaltitude environment(HAE) of 30～38 km above sea level for 8 h.The character expression of SP1,SP2 generation and the correlation heritability(CH)between SP2’s individual plants and SP3 generea-tion average value were investigated.The results demonstrated that the SP1’s germination percentageand germination potential of seed and seed setting percentage were lower than the check’s.Some char-acters of SP1 generation mutated,and mutation frequency(MF) was 3.39%. More stronger segrega-tion of 9 characters such as plant height and growth period duration( GPD),were appeared in the SP2generation,The SP’s mutational spectrum exceeded that in SP1,and MF was increased to 4.31%. The CH between SP2’s individual plants and SP3 generation average value was high.So it was consid-ered that the variation induced by HAE may be hereditable.And a new early─ maturing,high grainyield japonica waxy strain was bred.
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Claims 7
Claim · model-written summary
High-altitude environment exposure of rice seeds lowered germination percentage and germination potential and seed setting percentage in SP1 relative to the check.
- Taxon
- rice
Oryza sativae0 - Treatment
- highaltitude environmente0
- Outcome
- germination percentage and germination potential of seed and seed setting percentagee1
- Direction
- lowere1
- Comparator
- check’se1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Air- dried seeds of rice variety ZR9 were carried by high altitude ballcon(HAB)into highaltitude environment(HAE) of 30～38 km above sea level for 8 h”
e1“The results demonstrated that the SP1’s germination percentageand germination potential of seed and seed setting percentage were lower than the check’s”
Claim · model-written summary
Some characters of SP1 generation rice mutated, with a mutation frequency of 3.39%.
- Taxon
- riceOryza sativae0
- Organ / stage
- SP1 generatione2
- Outcome
- mutation frequencye2
- Value
- 3.39%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Air- dried seeds of rice variety ZR9 were carried by high altitude ballcon(HAB)into highaltitude environment(HAE) of 30～38 km above sea level for 8 h”
e2“Some char-acters of SP1 generation mutated,and mutation frequency(MF) was 3.39%”
Claim · model-written summary
Nine characters, including plant height and growth period duration, segregated more strongly in the SP2 generation of rice.
- Taxon
- riceOryza sativae0
- Organ / stage
- SP2 generatione3
- Outcome
- segrega-tion of 9 characterse3
- Qualifier
- plant height and growth period duratione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Air- dried seeds of rice variety ZR9 were carried by high altitude ballcon(HAB)into highaltitude environment(HAE) of 30～38 km above sea level for 8 h”
e3“More stronger segrega-tion of 9 characters such as plant height and growth period duration( GPD),were appeared in the SP2generation”
Claim · model-written summary
Mutation frequency of rice increased to 4.31% in SP2 compared with SP1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Air- dried seeds of rice variety ZR9 were carried by high altitude ballcon(HAB)into highaltitude environment(HAE) of 30～38 km above sea level for 8 h”
e4“The SP’s mutational spectrum exceeded that in SP1,and MF was increased to 4.31%”
Claim · model-written summary
The mutational spectrum of rice in SP2 exceeded that in SP1.
- Taxon
- riceOryza sativae0
- Outcome
- mutational spectrume4
- Direction
- exceedede4
- Comparator
- SP1e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Air- dried seeds of rice variety ZR9 were carried by high altitude ballcon(HAB)into highaltitude environment(HAE) of 30～38 km above sea level for 8 h”
e4“The SP’s mutational spectrum exceeded that in SP1,and MF was increased to 4.31%”
Claim · model-written summary
Correlation heritability between SP2 individual plants and the SP3 generation average was high in rice.
- Taxon
- riceOryza sativae0
- Outcome
- CHe5
- Value
- highe5
- Qualifier
- between SP2’s individual plants and SP3 generation average valuee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Air- dried seeds of rice variety ZR9 were carried by high altitude ballcon(HAB)into highaltitude environment(HAE) of 30～38 km above sea level for 8 h”
e5“The CH between SP2’s individual plants and SP3 generation average value was high”
Claim · model-written summary
A new early-maturing, high grain yield japonica waxy rice strain was bred from the mutants.
- Taxon
- riceOryza sativae0
- Material
- high grainyield japonica waxy straine7
- Outcome
- was brede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Air- dried seeds of rice variety ZR9 were carried by high altitude ballcon(HAB)into highaltitude environment(HAE) of 30～38 km above sea level for 8 h”
e7“And a new early─ maturing,high grainyield japonica waxy strain was bred”
The same questions in other papers
climate site · growth · Oryza sativa (rice)Positive and negative results
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See all 30 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.