Abstract
Use of sorghum [Sorghum bicolor (L.) Moench] cultivars with partial resistance to Striga spp. and Fusarium oxysporum f.sp. strigae (FOS) represents a novel strategy to control Striga. This study aimed to identify the nature of gene action controlling grain yield and yield components and to select promising sorghum crosses possessing both FOS compatibility and Striga resistance, along with good combining ability effects. One-hundred hybrids, developed from pairwise matings among 10 FOS compatible, high-yielding female lines and 10 Striga-resistant male lines, were evaluated with and without FOS inoculation. The F1s were field evaluated at three locations in Tanzania known for their severe Striga infestation, using an alpha lattice design with two replications. General (GCA) and specific combining ability (SCA) variances were significant for grain yield per plant, hundred-seed weight, plant height, flowering time and the number of Striga plants. The study demonstrated FOS inoculation to be an effective means of controlling Striga. Families 675 × 672, AS435 × 3993 and 4643 × AS436 displaying large SCA effects for grain yield, and 4567 × AS429, 3424 × AS430 and 3424 × AS436 with small SCA effects for Striga counts should be useful genetic resources for breeding and integrated Striga management.
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Claims 5
Claim · model-written summary
General and specific combining ability variances were significant for grain yield per plant, hundred-seed weight and plant height.
- Outcome
- grain yield per plant, hundred-seed weight, plant heighte0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“General (GCA) and specific combining ability (SCA) variances were significant for grain yield per plant, hundred-seed weight, plant height, flowering time and the number of Striga plants.”
t0“sorghum”
Claim · model-written summary
Combining ability variances were significant for flowering time and Striga plant counts.
- Outcome
- flowering time and the number of Striga plantse0
StrigaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“General (GCA) and specific combining ability (SCA) variances were significant for grain yield per plant, hundred-seed weight, plant height, flowering time and the number of Striga plants.”
t0“sorghum”
Claim · model-written summary
FOS inoculation controlled Striga effectively.
- Treatment
- FOS inoculatione0
- Second interactor
- FOSe0biocontrol_agent
- Outcome
- controlling Strigae0
- Direction
- effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The study demonstrated FOS inoculation to be an effective means of controlling Striga.”
t0“sorghum”
Claim · model-written summary
Three families had large specific combining ability effects for grain yield.
- Material
- Families 675 × 672, AS435 × 3993 and 4643 × AS436e0
- Outcome
- SCA effects for grain yielde0
- Direction
- largee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Families 675 × 672, AS435 × 3993 and 4643 × AS436 displaying large SCA effects for grain yield”
t0“sorghum”
Claim · model-written summary
Three families had small specific combining ability effects for Striga counts.
- Material
- 4567 × AS429, 3424 × AS430 and 3424 × AS436e0
- Outcome
- SCA effects for Striga countse0
- Direction
- smalle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“4567 × AS429, 3424 × AS430 and 3424 × AS436 with small SCA effects for Striga counts”
t0“sorghum”
The same questions in other papers
inoculation · Striga · SorghumPositive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
5 papers more in this group
See all 9 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.