Abstract
The increasing fodder demand in West African livestock production systems has prompted sorghum (Sorghum bicolor (L.) Moench) breeding programmes to develop dual-purpose varieties that produce grain for human consumption and fodder for livestock. This study examines the possibility of improving sorghum stalks quality of a photoperiodic variety, using two genes, which are known to improve straw digestibility by livestock. Three near-isogenic lines carrying either the brown midrib (bmr-12) allele, the juiciness (d) allele, or both alleles, were developed from an elite photoperiodic dual-purpose variety. Trials with three sowing dates were conducted from 2020 to 2021. Phenology, morphology and stem chemical composition were measured. Lines carrying bmr-12 allele showed a greater reduction in stem lignin content, than those carrying the ‘d’ allele alone. The two alleles have no cumulative effect on lignin content or stalk digestibility. Delayed sowing improved stalk digestibility significantly, but it is not an appropriate agronomic solution as it drastically reduces crop growth. The utilisation of the brown midrib trait appears to be a promising method of enhancing stalk digestibility; while preserving the climate adaptation provided by photoperiodism. These results pave way for new dual-purpose sorghum varieties in sub-Saharan Africa, contributing to the intensification of peri-urban livestock production.
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Claims 6
Claim · model-written summary
The bmr-12 allele reduced stem lignin more than the d allele alone.
- Material
- bmr-12 allelee0
- Treatment
- bmr-12 allelee0
- Outcome
- stem lignin contente0
- Direction
- reductione0
- Comparator
- ‘d’ allele alonee0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lines carrying bmr-12 allele showed a greater reduction in stem lignin content, than those carrying the ‘d’ allele alone.”
e1“sorghum (Sorghum bicolor (L.) Moench)”
Claim · model-written summary
Combining the two alleles had no cumulative effect on lignin content.
- Treatment
- both allelese2
- Outcome
- lignin contente0
- Direction
- no cumulative effecte0
- Comparator
- either the brown midrib (bmr-12) allele, the juiciness (d) allelee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two alleles have no cumulative effect on lignin content or stalk digestibility.”
e1“sorghum (Sorghum bicolor (L.) Moench)”
e2“carrying either the brown midrib (bmr-12) allele, the juiciness (d) allele, or both alleles”
Claim · model-written summary
Combining the two alleles had no cumulative effect on stalk digestibility.
- Treatment
- both allelese2
- Outcome
- stalk digestibilitye0
- Direction
- no cumulative effecte0
- Comparator
- either the brown midrib (bmr-12) allele, the juiciness (d) allelee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two alleles have no cumulative effect on lignin content or stalk digestibility.”
e1“sorghum (Sorghum bicolor (L.) Moench)”
e2“carrying either the brown midrib (bmr-12) allele, the juiciness (d) allele, or both alleles”
Claim · model-written summary
Delayed sowing significantly improved stalk digestibility.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed sowing improved stalk digestibility significantly”
e1“sorghum (Sorghum bicolor (L.) Moench)”
Claim · model-written summary
Delayed sowing drastically reduced crop growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed sowing improved stalk digestibility significantly, but it is not an appropriate agronomic solution as it drastically reduces crop growth.”
e1“sorghum (Sorghum bicolor (L.) Moench)”
Claim · model-written summary
The authors recommend using the brown midrib trait to improve stalk digestibility while preserving photoperiod adaptation.
- Outcome
- utilisation of the brown midrib traite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The utilisation of the brown midrib trait appears to be a promising method of enhancing stalk digestibility; while preserving the climate adaptation provided by photoperiodism.”
e1“sorghum (Sorghum bicolor (L.) Moench)”
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See all 24 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.