Abstract
As access to irrigation water becomes increasingly limited, introgression of relevant genomic regions from drought-tolerant wild genotypes is a promising breeding strategy for crop plants. In this study, nine eggplant (Solanum melongena) introgression lines (ILs) covering altogether 71.6% of the genome of the donor wild relative parent S. incanum were evaluated for drought tolerance under water stress conditions. Plants at the five true leaves stage were irrigated at either 100% (control) or 30% (water stress) field capacity for 14 days, and growth and biochemical traits were measured. Reduced irrigation resulted in decreased growth and increased levels of stress markers such as proline and malondialdehyde. Most ILs had lower growth and biomass production than the cultivated parent under both conditions. However, the wild alleles for two genomic regions related to stem and root dry weight (dwt8 and dwr6%) conferred improved tolerance to water stress. In addition, several S. incanum alleles had a positive effect on important traits that may improve yield under drought conditions, such as leaf water content (lwc12%), water use efficiency (wue1%) and chlorophyll content (chl2 and chl8%). Fine-mapping of the genomic regions for tolerance and reducing linkage drag with regions affecting growth will be crucial for significantly improving eggplant drought tolerance through introgression breeding.
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Claims 5
Claim · model-written summary
Reduced irrigation decreased growth of eggplant compared with 100% field capacity irrigation.
- Taxon
- eggplant
Solanum melongenae0 - Treatment
- Reduced irrigatione1
- Outcome
- growthe1
- Direction
- decreasede1
- Comparator
- 100% (control)e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nine eggplant (Solanum melongena) introgression lines (ILs) covering altogether 71.6% of the genome of the donor wild relative parent S. incanum”
e1“Reduced irrigation resulted in decreased growth and increased levels of stress markers such as proline and malondialdehyde”
e5“Plants at the five true leaves stage were irrigated at either 100% (control) or 30% (water stress) field capacity for 14 days”
Claim · model-written summary
Reduced irrigation increased stress markers proline and malondialdehyde in eggplant compared with 100% field capacity irrigation.
- Taxon
- eggplantSolanum melongenae0
- Treatment
- Reduced irrigatione1
- Outcome
- stress markers such as proline and malondialdehydee1
- Direction
- increasede1
- Comparator
- 100% (control)e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nine eggplant (Solanum melongena) introgression lines (ILs) covering altogether 71.6% of the genome of the donor wild relative parent S. incanum”
e1“Reduced irrigation resulted in decreased growth and increased levels of stress markers such as proline and malondialdehyde”
e5“Plants at the five true leaves stage were irrigated at either 100% (control) or 30% (water stress) field capacity for 14 days”
Claim · model-written summary
Most eggplant introgression lines had lower growth and biomass production than the cultivated parent under both irrigation conditions.
- Taxon
- eggplantSolanum melongenae0
- Material
- ILse2
- Outcome
- growth and biomass productione2
- Direction
- lowere2
- Comparator
- cultivated parente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nine eggplant (Solanum melongena) introgression lines (ILs) covering altogether 71.6% of the genome of the donor wild relative parent S. incanum”
e2“Most ILs had lower growth and biomass production than the cultivated parent under both conditions”
Claim · model-written summary
Wild alleles for two genomic regions (dwt8 and dwr6%) conferred improved tolerance to water stress in eggplant.
- Taxon
- eggplantSolanum melongenae0
- Material
- wild allelese3
- Gene
- dwt8 and dwr6%e3
- Outcome
- tolerance to water stresse3
- Direction
- improvede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nine eggplant (Solanum melongena) introgression lines (ILs) covering altogether 71.6% of the genome of the donor wild relative parent S. incanum”
e3“However, the wild alleles for two genomic regions related to stem and root dry weight (dwt8 and dwr6%) conferred improved tolerance to water stress”
Claim · model-written summary
Several S. incanum alleles had a positive effect on leaf water content, water use efficiency and chlorophyll content in eggplant under drought conditions.
- Taxon
- eggplantSolanum melongenae0
- Material
- S. incanum allelese4
- Outcome
- leaf water content (lwc12%), water use efficiency (wue1%) and chlorophyll content (chl2 and chl8%)e4
- Direction
- positive effecte4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nine eggplant (Solanum melongena) introgression lines (ILs) covering altogether 71.6% of the genome of the donor wild relative parent S. incanum”
e4“In addition, several S. incanum alleles had a positive effect on important traits that may improve yield under drought conditions, such as leaf water content (lwc12%), water use efficiency (wue1%) and chlorophyll content (chl2 and chl8%)”
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See all 25 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.