Abstract
Direct seeding has some advantages compared to transplanting system in rice, however there are some constraints need to be addressed. One constraint generally faced in the wet seeded rice is poor stand establishment. The experiment was conducted to improve seedling establishment by using selected growth regulators. Seeds of four rice cultivars, i.e. Memberamo, Widas, MR 84, and MR 219 were treated with GA3 (gibberellic acid-3) of 25, 50, and 100 mg 1-1, and IBA (indole-3 butyric acid) of 10, 20, and 40 mg l-1. Results showed that cultivar response to GA3 was similar in all parameters observed, however the response of cultivars to IBA was different at the initial stage. In Indonesian cultivars (Memberamo and Widas), shoot length of IBA treated seedlings was comparable to the control, but the IBA treated seedlings of Malaysian cultivars (MR 84 and MR 219) had slightly shorter shoots compared to the control. GA3 as seed treatment induced favorable early emergence and shoot growth in the initial stage, but the shoots were etiolated and resulted in susceptible to lodging even in the vegetative stage. In comparison, exogenous application of IBA resulted in high number of adventitious roots contributing towards better establishment of seedling with broader and greener leaves. The growth regulator was lost its effect by 2 or 3 weeks after sowing. All IBA concentrations also did not show any significant differences on growth parameters or have any detrimental effect on grain yield in all cultivar tested. IBA 10 mg l-1 was sufficient in providing the required improvement in the rice seedlings.
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Claims 13
Claim · model-written summary
GA3 seed treatment induced early emergence and shoot growth of rice in the initial stage.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- initial stagee1
- Treatment
- GA3 as seed treatmente1
- Outcome
- early emergence and shoot growthe1
- Direction
- inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e1“GA3 as seed treatment induced favorable early emergence and shoot growth in the initial stage”
Claim · model-written summary
GA3 seed treatment made rice shoots etiolated.
- Taxon
- riceOryza sativae0
- Treatment
- GA3e1
- Outcome
- shootse2
- Direction
- etiolatede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e1“GA3 as seed treatment induced favorable early emergence and shoot growth in the initial stage”
e2“but the shoots were etiolated and resulted in susceptible to lodging even in the vegetative stage”
Claim · model-written summary
GA3 seed treatment resulted in rice susceptible to lodging even in the vegetative stage.
- Taxon
- riceOryza sativae0
- Organ / stage
- vegetative stagee2
- Treatment
- GA3e1
- Outcome
- susceptible to lodginge2
- Direction
- resulted ine2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e1“GA3 as seed treatment induced favorable early emergence and shoot growth in the initial stage”
e2“but the shoots were etiolated and resulted in susceptible to lodging even in the vegetative stage”
Claim · model-written summary
Exogenous IBA application resulted in a high number of adventitious roots in rice.
- Taxon
- riceOryza sativae0
- Treatment
- exogenous application of IBAe3
- Outcome
- number of adventitious rootse3
- Direction
- highe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e3“In comparison, exogenous application of IBA resulted in high number of adventitious roots”
Claim · model-written summary
Exogenous IBA application gave better establishment of rice seedlings with broader and greener leaves.
- Taxon
- riceOryza sativae0
- Treatment
- exogenous application of IBAe3
- Outcome
- establishment of seedlinge4
- Direction
- bettere4
- Qualifier
- broader and greener leavese4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e3“In comparison, exogenous application of IBA resulted in high number of adventitious roots”
e4“contributing towards better establishment of seedling with broader and greener leaves”
Claim · model-written summary
IBA concentrations did not significantly change growth parameters of rice.
- Taxon
- riceOryza sativae0
- Treatment
- IBA concentrationse5
- Outcome
- growth parameterse5
- Direction
- did not show any significant differencese5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e5“All IBA concentrations also did not show any significant differences on growth parameters or have any detrimental effect on grain yield in all cultivar tested”
Claim · model-written summary
IBA concentrations had no detrimental effect on rice grain yield.
- Taxon
- riceOryza sativae0
- Treatment
- IBA concentrationse5
- Outcome
- grain yielde5
- Direction
- no_changeinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e5“All IBA concentrations also did not show any significant differences on growth parameters or have any detrimental effect on grain yield in all cultivar tested”
Claim · model-written summary
The response of rice cultivars to GA3 was similar across all parameters observed.
- Taxon
- riceOryza sativae0
- Treatment
- GA3e6
- Outcome
- cultivar response to GA3e6
- Direction
- similare6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e6“Results showed that cultivar response to GA3 was similar in all parameters observed”
Claim · model-written summary
The response of rice cultivars to IBA was different at the initial stage.
- Taxon
- riceOryza sativae0
- Organ / stage
- initial stagee7
- Treatment
- IBAe7
- Outcome
- response of cultivars to IBAe7
- Direction
- differente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e7“the response of cultivars to IBA was different at the initial stage”
Claim · model-written summary
In Indonesian rice cultivars, IBA-treated seedling shoot length was comparable to the control.
- Taxon
- riceOryza sativae0
- Material
- Memberamo and Widase1
- Treatment
- IBAe1
- Outcome
- shoot lengthe1
- Direction
- comparablee1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e1“In Indonesian cultivars (Memberamo and Widas), shoot length of IBA treated seedlings was comparable to the control”
Claim · model-written summary
In Malaysian rice cultivars, IBA-treated seedlings had slightly shorter shoots than the control.
- Taxon
- riceOryza sativae0
- Material
- MR 84 and MR 219e1
- Treatment
- IBAe1
- Outcome
- shootse1
- Direction
- shortere1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e1“the IBA treated seedlings of Malaysian cultivars (MR 84 and MR 219) had slightly shorter shoots compared to the control”
Claim · model-written summary
IBA 10 mg/l is sufficient to give the required improvement in rice seedlings.
- Taxon
- riceOryza sativae0
- Treatment
- IBA 10 mg l-1e1
- Outcome
- required improvement in the rice seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e1“IBA 10 mg l-1 was sufficient in providing the required improvement in the rice seedlings”
Claim · model-written summary
The growth regulator lost its effect in rice by 2 or 3 weeks after sowing.
- Taxon
- riceOryza sativae0
- Outcome
- effecte1
- Direction
- loste1
- Qualifier
- 2 or 3 weeks after sowinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds of four rice cultivars”
e1“The growth regulator was lost its effect by 2 or 3 weeks after sowing”
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See all 245 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.