Abstract
Objective This study aims to investigate the screening and evaluation indicators of low-potassium（K）tolerance of sesame varieties，thus providing important support for screening out of high K-efficient and breeding of low K tolerant sesame varieties. Method Twelve local sesame germplasm resources were used in a hydroponic experiment to compare the differences of plant height（PH），root length（RL），aboveground dry weight（SDW），underground dry weight（RDW），root-shoot ratio （RSR），K content and K accumulation under low K and normal K treatments.The low potassium tolerance coefficient（LPTC）of each index was calculated.Multivariate statistical analysis including principal component analysis（PCA），correlation analysis，cluster analysis and subordinate function was applied to comprehensively assess the low K tolerance of different sesame germplasm resources. Result Compared with normal K，the PH，RDW，SDW，plant dry weight（PDW），aboveground K content（SKC），underground K content（RKC），aboveground K accumulation（SKA），root K accumulation（RKA），and plant K accumulation（PKA）of the twelve sesame varieties was significantly reduced under low K treatment and the LPTC of aforementioned indicators was lower （LPTC<1）.Eleven indicators were simplified into three independent comprehensive indicators via PCA，which covered 92.30% of the total information.Based on the D value of LPTC calculated by using membership function analysis and clustering analysis，three varieties with low-K tolerance，seven varieties with moderate K sensitive，and two varieties with low-K sensitive were identified. Conclusion RKA，SKC，RDW，and RL could be critical indicators for identifying the low K tolerance of sesame.Duchang Hei，Jinkou Hei，and WZM6 are low-potassium-tolerant varieties；Zhongzhi 9 and Ganzhi 14 are low-potassium-sensitive varieties.
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Claims 8
Claim · model-written summary
Under low K, plant height, root dry weight and aboveground dry weight of the twelve sesame varieties were significantly reduced compared with normal K (LPTC<1).
- Taxon
- sesame
Sesamum indicume1 - Material
- local sesame germplasm resourcese0
- Organ / stage
- seedlingst0
- Treatment
- low K treatmente1
- Outcome
- PH，RDW，SDWe1
- Direction
- significantly reducede1
- Qualifier
- LPTC<1e1
- Comparator
- normal Ke1
- Setting
- hydroponic experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“black sesame seedlings”
e0“Twelve local sesame germplasm resources were used in a hydroponic experiment”
e1“Compared with normal K，the PH，RDW，SDW，plant dry weight（PDW），aboveground K content（SKC），underground K content（RKC），aboveground K accumulation（SKA），root K accumulation（RKA），and plant K accumulation（PKA）of the twelve sesame varieties was significantly reduced under low K treatment and the LPTC of aforementioned indicators was lower （LPTC<1）”
Claim · model-written summary
Under low K, plant dry weight, aboveground K content and underground K content of the twelve sesame varieties were significantly reduced compared with normal K (LPTC<1).
- Taxon
- sesameSesamum indicume1
- Material
- local sesame germplasm resourcese0
- Organ / stage
- seedlingst0
- Treatment
- low K treatmente1
- Outcome
- plant dry weight（PDW），aboveground K content（SKC），underground K content（RKC）e1
- Direction
- significantly reducede1
- Qualifier
- LPTC<1e1
- Comparator
- normal Ke1
- Setting
- hydroponic experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“black sesame seedlings”
e0“Twelve local sesame germplasm resources were used in a hydroponic experiment”
e1“Compared with normal K，the PH，RDW，SDW，plant dry weight（PDW），aboveground K content（SKC），underground K content（RKC），aboveground K accumulation（SKA），root K accumulation（RKA），and plant K accumulation（PKA）of the twelve sesame varieties was significantly reduced under low K treatment and the LPTC of aforementioned indicators was lower （LPTC<1）”
Claim · model-written summary
Under low K, aboveground K accumulation, root K accumulation and plant K accumulation of the twelve sesame varieties were significantly reduced compared with normal K (LPTC<1).
- Taxon
- sesameSesamum indicume1
- Material
- local sesame germplasm resourcese0
- Organ / stage
- seedlingst0
- Treatment
- low K treatmente1
- Outcome
- aboveground K accumulation（SKA），root K accumulation（RKA），and plant K accumulation（PKA）e1
- Direction
- significantly reducede1
- Qualifier
- LPTC<1e1
- Comparator
- normal Ke1
- Setting
- hydroponic experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“black sesame seedlings”
e0“Twelve local sesame germplasm resources were used in a hydroponic experiment”
e1“Compared with normal K，the PH，RDW，SDW，plant dry weight（PDW），aboveground K content（SKC），underground K content（RKC），aboveground K accumulation（SKA），root K accumulation（RKA），and plant K accumulation（PKA）of the twelve sesame varieties was significantly reduced under low K treatment and the LPTC of aforementioned indicators was lower （LPTC<1）”
Claim · model-written summary
Eleven indicators were reduced by PCA to three comprehensive indicators covering 92.30% of the total information.
- Taxon
- sesameSesamum indicume0
- Outcome
- total informatione2
- Value
- 92.30%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twelve local sesame germplasm resources were used in a hydroponic experiment”
e2“Eleven indicators were simplified into three independent comprehensive indicators via PCA，which covered 92.30% of the total information”
Claim · model-written summary
Three sesame varieties were identified as low-K tolerant.
- Taxon
- sesameSesamum indicume0
- Material
- Duchang Hei，Jinkou Hei，and WZM6e5
- Outcome
- low-K tolerancee3
- Value
- three varietiese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twelve local sesame germplasm resources were used in a hydroponic experiment”
e3“three varieties with low-K tolerance，seven varieties with moderate K sensitive，and two varieties with low-K sensitive were identified”
e5“Duchang Hei，Jinkou Hei，and WZM6 are low-potassium-tolerant varieties”
Claim · model-written summary
Seven sesame varieties were identified as moderately K sensitive.
- Taxon
- sesameSesamum indicume0
- Outcome
- moderate K sensitivee3
- Value
- seven varietiese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twelve local sesame germplasm resources were used in a hydroponic experiment”
e3“three varieties with low-K tolerance，seven varieties with moderate K sensitive，and two varieties with low-K sensitive were identified”
Claim · model-written summary
Two sesame varieties were identified as low-K sensitive.
- Taxon
- sesameSesamum indicume0
- Material
- Zhongzhi 9 and Ganzhi 14e6
- Outcome
- low-K sensitivee3
- Value
- two varietiese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Twelve local sesame germplasm resources were used in a hydroponic experiment”
e3“three varieties with low-K tolerance，seven varieties with moderate K sensitive，and two varieties with low-K sensitive were identified”
e6“Zhongzhi 9 and Ganzhi 14 are low-potassium-sensitive varieties”
Claim · model-written summary
RKA, SKC, RDW and RL could be critical indicators for identifying low K tolerance of sesame.
- Taxon
- sesameSesamum indicume4
- Outcome
- critical indicators for identifying the low K tolerancee4
- Qualifier
- RKA，SKC，RDW，and RLe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“RKA，SKC，RDW，and RL could be critical indicators for identifying the low K tolerance of sesame”
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See all 8 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.