Abstract
Dormant, dehulled red rice ( Oryza sativa L. ‘Louisiana strawhulled′) germinated 80 to 90% at 30 C upon exposure to 10- 3 M kinetin (6-furfurylaminopurine), benzyladenine (6-benzylaminopurine), or isopentenyladenine [6-(3-methylbut-2-enylamino)purine] at pH 3.5. Zeatin [6-(4-hydroxy-3-methylbut-trans-2-enylamino)purine] was also active, eliciting 45% germination at 10- 3 M. Adenine was inactive at concentrations as high as 10- 2 M. There was little influence of light and no effect of initial pH of the medium upon cytokinin-stimulated germination. At 20 C the response to cytokinins was reduced, but germination of non-dormant seeds was not prevented. At 30 C, the germination of dehulled red rice with 10- 3 M kinetin occurred rapidly, with almost 70% germination after 2 days. When dehulled seeds were incubated in water and then transferred to kinetin, percent germination decreased as the duration of water incubation increased. The loss of cytokinin response did not parallel the timecourse of imbibition. Cytokinins did not break dormancy of intact seeds. The hull appeared to limit kinetin uptake and inhibited germination even when kinetin was forced into intact seeds by vacuum infiltration. Dry-after-ripening of intact seeds at 30 C did not increase the kinetin-sensitivity of intact red rice.
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Claims 14
Claim · model-written summary
Dormant dehulled red rice germinated 80 to 90% at 30 C after exposure to kinetin, benzyladenine or isopentenyladenine at pH 3.5.
- Taxon
- Oryza sativa
Oryza sativat0 - Material
- Louisiana strawhullede1
- Treatment
- 10- 3 M kinetin (6-furfurylaminopurine), benzyladenine (6-benzylaminopurine), or isopentenyladeninee1
- Outcome
- germinatede1
- Direction
- increaseinferrede1
- Value
- 80 to 90%e1
- Qualifier
- at pH 3.5e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e1“Dormant, dehulled red rice ( Oryza sativa L. ‘Louisiana strawhulled′) germinated 80 to 90% at 30 C upon exposure to 10- 3 M kinetin (6-furfurylaminopurine), benzyladenine (6-benzylaminopurine), or isopentenyladenine [6-(3-methylbut-2-enylamino)purine] at pH 3.5”
Claim · model-written summary
Zeatin also elicited 45% germination at 10- 3 M in dormant red rice.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- Zeatine2
- Outcome
- germinatione2
- Direction
- increaseinferrede2
- Value
- 45%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e2“Zeatin [6-(4-hydroxy-3-methylbut-trans-2-enylamino)purine] was also active, eliciting 45% germination at 10- 3 M”
Claim · model-written summary
Adenine was inactive in promoting germination of dormant red rice at concentrations as high as 10- 2 M.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- Adeninee3
- Outcome
- inactivee3
- Qualifier
- as high as 10- 2 Me3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e3“Adenine was inactive at concentrations as high as 10- 2 M”
Claim · model-written summary
Light had little influence on cytokinin-stimulated germination of red rice.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- lighte4
- Outcome
- cytokinin-stimulated germinatione4
- Direction
- no_changeinferrede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e4“There was little influence of light and no effect of initial pH of the medium upon cytokinin-stimulated germination”
Claim · model-written summary
Initial pH of the medium had no effect on cytokinin-stimulated germination of red rice.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- initial pH of the mediume4
- Outcome
- cytokinin-stimulated germinatione4
- Direction
- no effecte4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e4“There was little influence of light and no effect of initial pH of the medium upon cytokinin-stimulated germination”
Claim · model-written summary
At 20 C the response of red rice to cytokinins was reduced.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- 20 Ce5
- Outcome
- response to cytokininse5
- Direction
- reducede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e5“At 20 C the response to cytokinins was reduced”
Claim · model-written summary
At 20 C germination of non-dormant red rice seeds was not prevented.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- 20 Ce5
- Outcome
- germination of non-dormant seedse6
- Direction
- not preventede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e5“At 20 C the response to cytokinins was reduced”
e6“germination of non-dormant seeds was not prevented”
Claim · model-written summary
At 30 C dehulled red rice with 10- 3 M kinetin germinated rapidly, reaching almost 70% germination after 2 days.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- 10- 3 M kinetine7
- Outcome
- germinatione7
- Direction
- increaseinferrede7
- Value
- almost 70%e7
- Qualifier
- after 2 dayse7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e7“the germination of dehulled red rice with 10- 3 M kinetin occurred rapidly, with almost 70% germination after 2 days”
Claim · model-written summary
Percent germination of dehulled red rice transferred to kinetin decreased as the duration of prior water incubation increased.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- water incubatione1
- Outcome
- percent germinatione1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e1“When dehulled seeds were incubated in water and then transferred to kinetin, percent germination decreased as the duration of water incubation increased”
Claim · model-written summary
The loss of cytokinin response did not parallel the timecourse of imbibition in red rice.
- Taxon
- Oryza sativaOryza sativat0
- Treatment
- timecourse of imbibitione2
- Outcome
- loss of cytokinin responsee2
- Direction
- did not parallele2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e2“The loss of cytokinin response did not parallel the timecourse of imbibition”
Claim · model-written summary
Cytokinins did not break dormancy of intact red rice seeds.
- Taxon
- Oryza sativaOryza sativat0
- Organ / stage
- intact seedse3
- Treatment
- Cytokininse3
- Outcome
- dormancy of intact seedse3
- Direction
- did not breake3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e3“Cytokinins did not break dormancy of intact seeds”
Claim · model-written summary
The hull appears to limit kinetin uptake in red rice.
- Taxon
- Oryza sativaOryza sativat0
- Organ / stage
- hulle4
- Compound
- kinetine4
- Outcome
- kinetin uptakee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e4“The hull appeared to limit kinetin uptake and inhibited germination even when kinetin was forced into intact seeds by vacuum infiltration”
Claim · model-written summary
Germination of red rice remained inhibited when kinetin was forced into intact seeds by vacuum infiltration.
- Taxon
- Oryza sativaOryza sativat0
- Organ / stage
- intact seedse4
- Treatment
- forced into intact seeds by vacuum infiltratione4
- Outcome
- germinatione4
- Direction
- inhibitede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e4“The hull appeared to limit kinetin uptake and inhibited germination even when kinetin was forced into intact seeds by vacuum infiltration”
Claim · model-written summary
Dry-after-ripening of intact red rice seeds at 30 C did not increase their kinetin-sensitivity.
- Taxon
- Oryza sativaOryza sativat0
- Organ / stage
- intact seedse5
- Treatment
- Dry-after-ripeninge5
- Outcome
- kinetin-sensitivitye5
- Direction
- did not increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Red Rice (Oryza sativa)”
e5“Dry-after-ripening of intact seeds at 30 C did not increase the kinetin-sensitivity of intact red rice”
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