Abstract
Two pot experiments were conducted during two successive sea-sons 1995/1996 and 1996/1997 to investigate the effect of different levels of soil available water (100%, 75% 50% and 25%) on four sugar beet varieties (Beta vulgaris L.) The results indicated that: - Growth and yield of sugar beet shoot were affected by water deficit more than the corresponding roots. • In spite of increasing sucrose percentage in root juice, purity and sugar yield per plant were decreased under water strees. - Biosynthesis of chlorophyll A was more degraded by water stress than chlorophyll B or carotenoids. - Nitrogen and sodium concentrations in both root and leaves were more reduced than phosphorus and potassium with lowering soil moisture availability at 50% and 25% from control. - Proline concentration increased in sugar beet leaves while acid inver-tase activity was inhibited in plant's roots under drought condition. - Varieties of sugar beet significantly differed in their response to water stress; both Ras Poly and Del 939 varieties were less affected by water deficit. M 9340 variety was the most sensitive. Top variety was moder-ately affected. - The increase in free proline concentration under water stress was much higher in the leaves of tolerant sugar beet varieties than that in the sensitive ones. This proved that proline plays a role in drought toler-ance in sugar beet. - Varieties of sugar beet could be arranged ascendingly according to their root invertase activity. Ras poly, Del 939, Top and M 9340.
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Claims 16
Claim · model-written summary
Water deficit affected sugar beet shoot growth and yield more than root growth and yield.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarise0 - Treatment
- water deficite0
- Outcome
- Growth and yield of sugar beet shoote0
- Direction
- moree0
- Comparator
- corresponding rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and yield of sugar beet shoot were affected by water deficit more than the corresponding roots.”
Claim · model-written summary
Water stress increased sugar beet root juice sucrose percentage.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- water streese1
- Outcome
- sucrose percentage in root juicee1
- Direction
- increasinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“In spite of increasing sucrose percentage in root juice, purity and sugar yield per plant were decreased under water strees.”
Claim · model-written summary
Water stress reduced sugar beet root juice purity.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- water streese1
- Outcome
- puritye1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“purity and sugar yield per plant were decreased under water strees”
Claim · model-written summary
Water stress reduced sugar yield per sugar beet plant.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- water streese1
- Outcome
- sugar yield per plante1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“purity and sugar yield per plant were decreased under water strees”
Claim · model-written summary
Water stress degraded sugar beet chlorophyll A biosynthesis more than chlorophyll B or carotenoids.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- water stresse1
- Outcome
- Biosynthesis of chlorophyll Ae1
- Direction
- more degradede1
- Comparator
- chlorophyll B or carotenoidse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“Biosynthesis of chlorophyll A was more degraded by water stress than chlorophyll B or carotenoids.”
Claim · model-written summary
At 50% and 25% soil moisture availability, sugar beet nitrogen concentration in roots and leaves fell more than phosphorus and potassium concentrations.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- lowering soil moisture availability at 50% and 25%e1
- Outcome
- Nitrogen and sodium concentrations in both root and leavese1
- Direction
- more reducede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“Nitrogen and sodium concentrations in both root and leaves were more reduced than phosphorus and potassium with lowering soil moisture availability at 50% and 25% from control.”
Claim · model-written summary
Drought increased proline concentration in sugar beet leaves.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Organ / stage
- leavese0
- Treatment
- drought conditione0
- Outcome
- Proline concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proline concentration increased in sugar beet leaves while acid inver-tase activity was inhibited in plant's roots under drought condition.”
Claim · model-written summary
Drought inhibited acid invertase activity in sugar beet roots.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Organ / stage
- plant's rootse1
- Treatment
- drought conditione1
- Outcome
- acid inver-tase activitye1
- Direction
- inhibitede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“acid inver-tase activity was inhibited in plant's roots under drought condition”
Claim · model-written summary
Sugar beet varieties differed significantly in response to water stress.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Material
- Varietiese0
- Outcome
- response to water stresse0
- Direction
- differede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Varieties of sugar beet significantly differed in their response to water stress”
Claim · model-written summary
Ras Poly was less affected by water deficit.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Material
- Ras Polye1
- Treatment
- water deficite1
- Outcome
- affectede1
- Direction
- lesse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“both Ras Poly and Del 939 varieties were less affected by water deficit”
Claim · model-written summary
Del 939 was less affected by water deficit.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Material
- Del 939e1
- Treatment
- water deficite1
- Outcome
- affectede1
- Direction
- lesse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“both Ras Poly and Del 939 varieties were less affected by water deficit”
Claim · model-written summary
M 9340 was the most water stress sensitive sugar beet variety.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Material
- M 9340e1
- Outcome
- most sensitivee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“M 9340 variety was the most sensitive.”
Claim · model-written summary
Top was moderately affected by water stress.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Material
- Tope1
- Outcome
- moder-ately affectede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“Top variety was moder-ately affected.”
Claim · model-written summary
Water stress increased leaf free proline more in tolerant sugar beet varieties than sensitive varieties.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Organ / stage
- leavese1
- Treatment
- water stresse1
- Outcome
- free proline concentratione1
- Direction
- much highere1
- Comparator
- sensitive onese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four sugar beet varieties (Beta vulgaris L.)”
e1“The increase in free proline concentration under water stress was much higher in the leaves of tolerant sugar beet varieties than that in the sensitive ones.”
Claim · model-written summary
The authors interpreted proline as having a role in sugar beet drought tolerance.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Compound
- prolinee0
- Outcome
- drought toler-ancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline plays a role in drought toler-ance in sugar beet”
Claim · model-written summary
Ras poly, Del 939, Top and M 9340 were ordered by ascending root invertase activity.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Outcome
- root invertase activitye0
- Direction
- ascendinglye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Varieties of sugar beet could be arranged ascendingly according to their root invertase activity. Ras poly, Del 939, Top and M 9340.”
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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.