Abstract
A two-year field experiment was conducted to investigate the effects of potassium on sucrose metabolism in the root system and its relationship with storage root formation in sweetpotato. Edible varieties Yanshu 25 and Beijing 553 were treated with K2O at 0, 12, 24, or 36 g m−2, and the number and length of adventitious roots in early growth stage, sucrose and hexose contents, and related enzyme activity in potential storage roots, as well as the number of storage roots and yield at harvest, were analyzed. The results showed K significantly increased the average number of storage roots per plant and yield at harvest, compared to the control. The increases were highest in 24 g m−2 K2O treatment, they changed slightly and even decreased with more K2O. Further study revealed appropriate potassium rate significantly increased the number and length of adventitious roots in early storage root formation stage. It also increased the activities of vacuolar, cell-wall and cytosolic invertase, coinciding with decreased sucrose versus increased fructose and glucose contents in potential roots. As per statistical path analysis, fructose accumulation contributed the most to storage root formation, while, in turn, cytosolic invertase contributed the most to promoting sucrose degradation and fructose accumulation.
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Claims 10
Claim · model-written summary
Potassium significantly increased the average number of storage roots per plant compared with the control.
- Taxon
- sweetpotato
_Flower.jpg?width=60)
Ipomoea batatase0 - Treatment
- Ke1
- Outcome
- average number of storage roots per plante1
- Direction
- increasede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“its relationship with storage root formation in sweetpotato”
e1“K significantly increased the average number of storage roots per plant and yield at harvest, compared to the control”
Claim · model-written summary
Potassium significantly increased yield at harvest compared with the control.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- Ke1
- Outcome
- yield at harveste1
- Direction
- increasede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its relationship with storage root formation in sweetpotato”
e1“K significantly increased the average number of storage roots per plant and yield at harvest, compared to the control”
Claim · model-written summary
The increases in storage roots and yield were highest at 24 g m−2 K2O.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- 24 g m−2 K2Oe2
- Outcome
- increasese2
- Direction
- higheste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its relationship with storage root formation in sweetpotato”
e2“The increases were highest in 24 g m−2 K2O treatment”
Claim · model-written summary
Above 24 g m−2 K2O the increases changed slightly and even decreased with more K2O.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- more K2Oe3
- Outcome
- increasese2
- Direction
- decreasede3
- Qualifier
- changed slightlye3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its relationship with storage root formation in sweetpotato”
e2“The increases were highest in 24 g m−2 K2O treatment”
e3“they changed slightly and even decreased with more K2O”
Claim · model-written summary
An appropriate potassium rate significantly increased the number and length of adventitious roots in the early storage root formation stage.
- Taxon
- sweetpotatoIpomoea batatase0
- Organ / stage
- early storage root formation stagee4
- Treatment
- appropriate potassium ratee4
- Outcome
- number and length of adventitious rootse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its relationship with storage root formation in sweetpotato”
e4“appropriate potassium rate significantly increased the number and length of adventitious roots in early storage root formation stage”
Claim · model-written summary
Potassium increased the activities of vacuolar, cell-wall and cytosolic invertase in potential storage roots.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- appropriate potassium ratee4
- Gene
- vacuolar, cell-wall and cytosolic invertasee5
- Outcome
- activitiese5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its relationship with storage root formation in sweetpotato”
e4“appropriate potassium rate significantly increased the number and length of adventitious roots in early storage root formation stage”
e5“It also increased the activities of vacuolar, cell-wall and cytosolic invertase”
Claim · model-written summary
Sucrose content decreased in potential roots alongside the potassium treatment.
- Taxon
- sweetpotatoIpomoea batatase0
- Organ / stage
- potential rootse6
- Outcome
- sucrosee6
- Direction
- decreasede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its relationship with storage root formation in sweetpotato”
e6“coinciding with decreased sucrose versus increased fructose and glucose contents in potential roots”
Claim · model-written summary
Fructose and glucose contents increased in potential roots.
- Taxon
- sweetpotatoIpomoea batatase0
- Organ / stage
- potential rootse6
- Outcome
- fructose and glucose contentse6
- Direction
- increasede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its relationship with storage root formation in sweetpotato”
e6“coinciding with decreased sucrose versus increased fructose and glucose contents in potential roots”
Claim · model-written summary
Fructose accumulation contributed the most to storage root formation by statistical path analysis.
- Taxon
- sweetpotatoIpomoea batatase0
- Compound
- fructose accumulatione7
- Outcome
- storage root formatione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its relationship with storage root formation in sweetpotato”
e7“As per statistical path analysis, fructose accumulation contributed the most to storage root formation, while, in turn, cytosolic invertase contributed the most to promoting sucrose degradation and fructose accumulation”
Claim · model-written summary
Cytosolic invertase contributed the most to promoting sucrose degradation and fructose accumulation.
- Taxon
- sweetpotatoIpomoea batatase0
- Gene
- cytosolic invertasee7
- Outcome
- sucrose degradation and fructose accumulatione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its relationship with storage root formation in sweetpotato”
e7“As per statistical path analysis, fructose accumulation contributed the most to storage root formation, while, in turn, cytosolic invertase contributed the most to promoting sucrose degradation and fructose accumulation”
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See all 27 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.