Abstract
Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls. The aim of this study was to examine the variability in levels of acid detergent fiber (ADF), its components—cellulose, acid detergent lignin (ADL), and insoluble ash (mainly silica)— and pepsin cellulase digestibility (PCD) in hulls separated from current Western Australian genotypes. Analyses were conducted on six genotypes grown in trials at up to seven locations in Western Australia in 1981. In 1983, the same genotypes, and one other, were tested at five locations. In both years, considerable genotypic variance was observed in levels of PCD, ADF, and ADL. Location affected all traits, particularly insoluble ash, in both years. Genotype ✕ location interaction was not measured in 1981, but in 1983 was found to be significant for all traits. Interaction effects were of sufficient magnitude to mask the small genotypic variations in cellulose, but clear differentiation between genotypes with high or low PCD, ADF, and ADL was observed at each location. While PCD was highly correlated with ADF (r = −0.97 ** (significant at the 0.01 probability level), based on means for each of seven genotypes over five locations), differences between genotypes in both PCD and ADF were associated mainly with ADL (r = −0.98 ** and 0.95 ** , respectively). Among the genotypes tested, Swan (PCD, 293 g kg−1 ; ADL, 8 g kg −1 ) and ‘Mortlock’ (PCD, 108 g kg −1 ; ADL, 76 g kg −1 ) had the highest and lowest quality hulls, respectively. This study has shown considerable variation to exist in the highly correlated factors PCD and ADL among current Western Australian genotypes, and indicates potential for improvement in the feeding quality of oat grain through plant breeding.
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Claims 10
Claim · model-written summary
Considerable genotypic variance was observed in PCD, ADF and ADL of oat hulls.
- Taxon
- oat
Avena sativae0 - Outcome
- PCD, ADF, and ADLe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls”
e1“In both years, considerable genotypic variance was observed in levels of PCD, ADF, and ADL”
Claim · model-written summary
Location affected all oat hull traits, particularly insoluble ash.
- Taxon
- oatAvena sativae0
- Treatment
- Locatione2
- Outcome
- all traitse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls”
e2“Location affected all traits, particularly insoluble ash, in both years”
Claim · model-written summary
Genotype by location interaction was significant for all oat hull traits in 1983.
- Taxon
- oatAvena sativae0
- Outcome
- all traitse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls”
e3“but in 1983 was found to be significant for all traits”
Claim · model-written summary
Clear differentiation between oat genotypes with high or low PCD, ADF and ADL was observed at each location.
- Taxon
- oatAvena sativae0
- Outcome
- clear differentiation between genotypese4
- Setting
- at each locatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls”
e4“clear differentiation between genotypes with high or low PCD, ADF, and ADL was observed at each location”
Claim · model-written summary
PCD was highly correlated with ADF across seven oat genotypes.
- Taxon
- oatAvena sativae0
- Material
- seven genotypese6
- Outcome
- PCDe5
- Value
- −0.97e5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls”
e5“PCD was highly correlated with ADF (r = −0.97 **”
e6“based on means for each of seven genotypes over five locations”
Claim · model-written summary
Differences between oat genotypes in PCD were associated with ADL.
- Taxon
- oatAvena sativae0
- Material
- genotypese7
- Outcome
- PCDe7
- Value
- −0.98e7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls”
e7“differences between genotypes in both PCD and ADF were associated mainly with ADL (r = −0.98 ** and 0.95 **, respectively)”
Claim · model-written summary
Differences between oat genotypes in ADF were associated with ADL.
- Taxon
- oatAvena sativae0
- Material
- genotypese7
- Outcome
- ADFe7
- Value
- 0.95e7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls”
e7“differences between genotypes in both PCD and ADF were associated mainly with ADL (r = −0.98 ** and 0.95 **, respectively)”
Claim · model-written summary
Swan had the highest quality hulls among the oat genotypes tested.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls”
e1“Among the genotypes tested, Swan”
e2“had the highest and lowest quality hulls, respectively”
e3“Mortlock”
Claim · model-written summary
Mortlock had the lowest quality hulls among the oat genotypes tested.
- Taxon
- oatAvena sativae0
- Material
- Mortlocke2
- Outcome
- quality hullse1
- Direction
- loweste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls”
e1“had the highest and lowest quality hulls, respectively”
e2“Mortlock”
Claim · model-written summary
Considerable variation in PCD and ADL among current Western Australian oat genotypes indicates potential for improving feeding quality of oat grain through plant breeding.
- Taxon
- oatAvena sativae0
- Outcome
- feeding quality of oat graine1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Little attention has been given to the study of genotypic variation in the composition and digestibility of oat ( Avena sativa L.) hulls”
e1“indicates potential for improvement in the feeding quality of oat grain through plant breeding”