Abstract
Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse during the two successive summer seasons 1999 and 2000. The aim of this study was to find out the factors that may affect success of controlled crosses in rice cv. Agamy (Sabini) The factors affecting grain set percentages under study were pollen age, stigma receptivity and time (hour) of pollination. Results indicated that pollens over two hours old resulted in a low grain set percentage and pollen viability was greatly affected by the time elapsed since its excursion from the anthers. Pollen viability was greatly decreased as the pollen age increased. Six and twelve hour’s pollen ages showed a considerable reduction in grain set percentages. Stigmas of 1 or 2 days old resulted in the highest grain set percentage. Stigmas of age over 5 days showed a comparable low grain set percentages. Stigma receptivity was greatly affected by its age (the time elapsed since its emergence from the florets) and the proper age for stigmas to receive the pollen was one to two days. The period ranging between early morning 6 A.M. to mid morning 9 A.M. showed the high mean percent of grain set. Pollination hour after 10 A.M. greatly resulted in a decrease in mean percent of grain set. This reduction reached its maximum at noon hour or later on.
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Claims 10
Claim · model-written summary
Pollen older than two hours gave a low grain set percentage in rice.
- Taxon
- rice
Oryza sativae0 - Material
- cv. Agamye0
- Treatment
- pollens over two hours olde1
- Outcome
- grain set percentagee1
- Direction
- lowe1
- Setting
- greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse”
e1“pollens over two hours old resulted in a low grain set percentage”
Claim · model-written summary
Pollen viability in rice was greatly decreased as pollen age increased.
- Taxon
- riceOryza sativae0
- Material
- cv. Agamye0
- Treatment
- pollen agee2
- Outcome
- pollen viabilitye2
- Direction
- greatly decreasede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse”
e2“pollen viability was greatly decreased as the pollen age increased”
Claim · model-written summary
Six and twelve hour pollen ages gave a considerable reduction in rice grain set percentage.
- Taxon
- riceOryza sativae0
- Material
- cv. Agamye0
- Treatment
- Six and twelve hour’s pollen agese3
- Outcome
- grain set percentagese3
- Direction
- reductione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse”
e3“Six and twelve hour’s pollen ages showed a considerable reduction in grain set percentages”
Claim · model-written summary
Stigmas 1 or 2 days old gave the highest rice grain set percentage.
- Taxon
- riceOryza sativae0
- Material
- cv. Agamye0
- Treatment
- Stigmas of 1 or 2 days olde4
- Outcome
- grain set percentagee4
- Direction
- higheste4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse”
e4“Stigmas of 1 or 2 days old resulted in the highest grain set percentage”
Claim · model-written summary
Stigmas over 5 days old gave a comparably low rice grain set percentage.
- Taxon
- riceOryza sativae0
- Material
- cv. Agamye0
- Treatment
- Stigmas of age over 5 dayse5
- Outcome
- grain set percentagese5
- Direction
- lowe5
- Qualifier
- comparablee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse”
e5“Stigmas of age over 5 days showed a comparable low grain set percentages”
Claim · model-written summary
Stigma receptivity in rice was greatly affected by stigma age.
- Taxon
- riceOryza sativae0
- Material
- cv. Agamye0
- Treatment
- its agee6
- Outcome
- Stigma receptivitye6
- Direction
- greatly affectede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse”
e6“Stigma receptivity was greatly affected by its age (the time elapsed since its emergence from the florets) and the proper age for stigmas to receive the pollen was one to two days”
Claim · model-written summary
The proper stigma age for receiving pollen in rice is one to two days.
- Taxon
- riceOryza sativae0
- Material
- cv. Agamye0
- Organ / stage
- stigmase6
- Outcome
- proper age for stigmas to receive the pollene6
- Value
- one to two dayse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse”
e6“Stigma receptivity was greatly affected by its age (the time elapsed since its emergence from the florets) and the proper age for stigmas to receive the pollen was one to two days”
Claim · model-written summary
Pollination between 6 A.M. and 9 A.M. gave the high mean percent of grain set in rice.
- Taxon
- riceOryza sativae0
- Material
- cv. Agamye0
- Treatment
- The period ranging between early morning 6 A.M. to mid morning 9 A.M.e7
- Outcome
- mean percent of grain sete7
- Direction
- highe7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse”
e7“The period ranging between early morning 6 A.M. to mid morning 9 A.M. showed the high mean percent of grain set”
Claim · model-written summary
Pollination after 10 A.M. decreased the mean percent of grain set in rice.
- Taxon
- riceOryza sativae0
- Material
- cv. Agamye0
- Treatment
- Pollination hour after 10 A.M.e1
- Outcome
- mean percent of grain sete1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse”
e1“Pollination hour after 10 A.M. greatly resulted in a decrease in mean percent of grain set”
Claim · model-written summary
The reduction in grain set from late pollination reached its maximum at noon or later.
- Taxon
- riceOryza sativae0
- Material
- cv. Agamye0
- Treatment
- noon hour or latere1
- Outcome
- reductione1
- Direction
- maximume1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grains of the old conservative rice cv. Agamy (Sabini) were sown in greenhouse”
e1“This reduction reached its maximum at noon hour or later on”
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5 papers more in this group
See all 9 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.