Abstract
Though breeding for drought resistance is complicated due to the many processes involved and their interaction with the environment, availability of precise, cheap and easy to apply selection tool is critical. The present study quantified the response of potato genotypes to drought and identified potential morpho-physiological traits that are useful for selection of drought tolerant genotypes. The study assessed sixty genotypes under two irrigation regimes: fully watered non-stress and terminal drought, where the irrigation water supply to the crop was withheld after 50 % flowering to induce post-flowering stress. Measurements for various morpho-physiological, yield and quality related traits were taken following the potato crop trait ontology. The post-flowering stress induced in this study caused a tuber yield reduction of 33.13% compared with the non-stressed treatment. The genotypes responded differently in tuber yielding potential to the drought. This differential tuber yield response to drought was associated with up and downward regulation of multiple traits related to drought adaptation in potatoes. Drought caused downward regulation on trait responses such as harvest index, leaf area and specific leaf area. Plant height, aboveground biomass and relative water content of leaf contributed negatively for tuber yield under stressed condition. Therefore, the selection attributes identified from this study could help the potato breeding program in the country to develop climate resilient potato varieties.
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Claims 6
Claim · model-written summary
Post-flowering drought reduced potato tuber yield 33.13% against non-stressed treatment.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- post-flowering stresse0
- Outcome
- tuber yielde0
- Direction
- reductione0
- Value
- 33.13%e0
- Comparator
- non-stressed treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“post-flowering stress induced in this study caused a tuber yield reduction of 33.13% compared with the non-stressed treatment”
t0“Potato”
Claim · model-written summary
Potato genotypes differed in tuber yield response to drought.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- droughte0
- Outcome
- tuber yielding potentiale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The genotypes responded differently in tuber yielding potential to the drought”
t0“Potato”
Claim · model-written summary
Differential potato tuber yield responses were associated with regulation of drought adaptation traits.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- droughte0
- Outcome
- tuber yield responsee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This differential tuber yield response to drought was associated with up and downward regulation of multiple traits related to drought adaptation in potatoes”
Claim · model-written summary
Drought reduced harvest index, leaf area and specific leaf area.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- Droughte0
- Outcome
- harvest index, leaf area and specific leaf areae0
- Direction
- downward regulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought caused downward regulation on trait responses such as harvest index, leaf area and specific leaf area”
t0“Potato”
Claim · model-written summary
Plant height, aboveground biomass and leaf relative water content contributed negatively to tuber yield under stress.
- Taxon
- potatoSolanum tuberosumt0
- Organ / stage
- leafe0
- Outcome
- tuber yielde0
- Direction
- negativelye0
- Qualifier
- under stressed conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height, aboveground biomass and relative water content of leaf contributed negatively for tuber yield under stressed condition”
t0“Potato”
Claim · model-written summary
The identified selection attributes could aid development of climate resilient potato varieties.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- develop climate resilient potato varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“selection attributes identified from this study could help the potato breeding program in the country to develop climate resilient potato varieties”
The same questions in other papers
drought · yield · Solanum tuberosum (potato)Results differ
36 papers in the same direction as this paper · 10 in the opposite direction
- negative
- negative
- negative
43 papers more in this group
See all 47 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.