Abstract
Greenhouse studies were initiated in 2001 to evaluate the effect of V-10029 applications on shoot and root growth of rice cultivars. V-10029 applications did not affect the shoot and root weight or shoot–root ratio of Cocodrie. Tolerance of Bengal was less than that of Cocodrie and was growth stage dependent. V-10029 treatments at the one- to two-leaf rice growth stage reduced shoot growth but had no effect on root, resulting in a lower shoot–root ratio compared with that of the nontreated 1 wk after treatment (WAT). At 2 and 3 WAT, both shoot and root growth were reduced by V-10029, with shoot–root ratio being greater than that of the nontreated, indicating a greater inhibition of roots than of shoots. V-10029 treatments at the two- to three-leaf rice growth stage reduced both shoot and root growth of Bengal across all three sampling dates. V-10029 treatments at the three- to four-leaf rice growth stage did not affect shoot growth but reduced root growth 2 and 3 WAT with no difference in shoot–root ratio. There was no difference in shoot and root weight or shoot–root ratio between the propanil comparison treatment and the nontreated. These results indicate that rice cultivars may differ in their tolerance to V-10029 and tolerance may be growth stage dependent.Nomenclature: V-10029, sodium 2,6-bis[(4,6-dimethoxypyrimidin-2-yl)oxy]benzoate; propanil; rice, Oryza sativa L. ‘Cocodrie’, ‘Bengal’.Additional index words: Herbicide tolerance, shoot–root ratio.Abbreviations: ALS, acetolactate synthase; WAT, weeks after treatment.
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Claims 13
Claim · model-written summary
V-10029 did not affect Cocodrie shoot or root weight or shoot-root ratio.
- Taxon
- Rice (Oryza sativa)
Oryza sativat0 - Material
- Cocodriee0
- Treatment
- V-10029e0
- Outcome
- shoot and root weight or shoot–root ratioe0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“V-10029 applications did not affect the shoot and root weight or shoot–root ratio of Cocodrie.”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
Claim · model-written summary
Bengal was less tolerant than Cocodrie, dependent on growth stage.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Material
- Bengale0
- Outcome
- Tolerancee0
- Direction
- less thane0
- Comparator
- Cocodriee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tolerance of Bengal was less than that of Cocodrie and was growth stage dependent.”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
Claim · model-written summary
At one to two leaves V-10029 reduced Bengal shoot growth at one week.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Material
- Bengale1
- Organ / stage
- one- to two-leaf rice growth stagee0
- Treatment
- V-10029e0
- Outcome
- shoot growthe0
- Direction
- reducede0
- Comparator
- nontreatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“V-10029 treatments at the one- to two-leaf rice growth stage reduced shoot growth but had no effect on root, resulting in a lower shoot–root ratio compared with that of the nontreated 1 wk after treatment (WAT).”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
e1“Tolerance of Bengal was less than that of Cocodrie”
Claim · model-written summary
At one to two leaves V-10029 had no effect on Bengal roots at one week.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Organ / stage
- one- to two-leaf rice growth stagee0
- Treatment
- V-10029e0
- Outcome
- roote0
- Direction
- no effecte0
- Comparator
- nontreatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“V-10029 treatments at the one- to two-leaf rice growth stage reduced shoot growth but had no effect on root, resulting in a lower shoot–root ratio compared with that of the nontreated 1 wk after treatment (WAT).”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
Claim · model-written summary
At one to two leaves Bengal shoot-root ratio was lower at one week.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Treatment
- V-10029e1
- Outcome
- shoot–root ratioe0
- Direction
- lowere0
- Comparator
- nontreatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulting in a lower shoot–root ratio compared with that of the nontreated 1 wk after treatment (WAT).”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
e1“V-10029 applications did not affect the shoot and root weight”
Claim · model-written summary
At two and three weeks V-10029 reduced Bengal shoot growth.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Treatment
- V-10029e0
- Outcome
- shoote0
- Direction
- reducede0
- Qualifier
- 2 and 3 WATe0
- Comparator
- nontreatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 2 and 3 WAT, both shoot and root growth were reduced by V-10029, with shoot–root ratio being greater than that of the nontreated”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
Claim · model-written summary
At two and three weeks V-10029 reduced Bengal root growth.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Treatment
- V-10029e0
- Outcome
- root growthe0
- Direction
- reducede0
- Qualifier
- 2 and 3 WATe0
- Comparator
- nontreatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 2 and 3 WAT, both shoot and root growth were reduced by V-10029, with shoot–root ratio being greater than that of the nontreated”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
Claim · model-written summary
At two and three weeks Bengal shoot-root ratio was greater than untreated.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Treatment
- V-10029e0
- Outcome
- shoot–root ratioe0
- Direction
- greatere0
- Comparator
- nontreatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 2 and 3 WAT, both shoot and root growth were reduced by V-10029, with shoot–root ratio being greater than that of the nontreated”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
Claim · model-written summary
At two to three leaves V-10029 reduced Bengal shoot and root growth at all sampling dates.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Material
- Bengale0
- Organ / stage
- two- to three-leaf rice growth stagee0
- Treatment
- V-10029e0
- Outcome
- shoot and root growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“V-10029 treatments at the two- to three-leaf rice growth stage reduced both shoot and root growth of Bengal across all three sampling dates.”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
Claim · model-written summary
At three to four leaves V-10029 did not affect Bengal shoot growth.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Treatment
- V-10029e0
- Outcome
- shoot growthe0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“V-10029 treatments at the three- to four-leaf rice growth stage did not affect shoot growth but reduced root growth 2 and 3 WAT with no difference in shoot–root ratio.”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
Claim · model-written summary
At three to four leaves V-10029 reduced Bengal root growth at two and three weeks.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Treatment
- V-10029e0
- Outcome
- root growthe0
- Direction
- reducede0
- Qualifier
- 2 and 3 WATe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“V-10029 treatments at the three- to four-leaf rice growth stage did not affect shoot growth but reduced root growth 2 and 3 WAT with no difference in shoot–root ratio.”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
Claim · model-written summary
At three to four leaves V-10029 did not change Bengal shoot-root ratio.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Treatment
- V-10029e0
- Outcome
- shoot–root ratioe0
- Direction
- no differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“V-10029 treatments at the three- to four-leaf rice growth stage did not affect shoot growth but reduced root growth 2 and 3 WAT with no difference in shoot–root ratio.”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
Claim · model-written summary
Propanil did not change shoot weight, root weight or shoot-root ratio relative to untreated.
- Taxon
- Rice (Oryza sativa)Oryza sativat0
- Treatment
- propanile0
- Outcome
- shoot and root weight or shoot–root ratioe0
- Direction
- no differencee0
- Comparator
- nontreatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no difference in shoot and root weight or shoot–root ratio between the propanil comparison treatment and the nontreated.”
t0“Rice (Oryza sativa)”
t1“Rice (Oryza sativa)”
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