Abstract
Seven selected doubled haploid lines, from each of three cycles (C0, C1, C2) of a diallel recurrent selection program, the seven original parents and two check cultivars were evaluated in replicated hill and row plots at two locations in Ontario in 1988 and 1989. Comparison of hill and row plots using means ranges, coefficient of variation, repeatability and correlations among traits indicated that grain yield, days to heading plant height and powdery mildew resistance could be evaluated with similar accuracy and precision using either of the methods. Regression of row plot yield on hill plot yield was positive and highly significant showing a strong relationship between the two plot types for grain yield. Selection efficiency in hill plots was high for all the traits. The percentage of lines with similar performance for yield in both the plot types was high. The hill plot method appears to be a useful technique for evaluating homozygous lines for yield and other agronomic traits in a doubled haploid recurrent selection program in six-row barley. Key words:Hordeum vulgare L., barley, breeding methods, yield, powdery mildew, doubled haploid, recurrent selection
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Claims 6
Claim · model-written summary
Hill and row plots evaluated grain yield, days to heading and plant height with similar accuracy and precision in barley.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Outcome
- accuracy and precisione1
- Qualifier
- grain yield, days to heading plant heighte1
- Comparator
- row plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“barley”
e0“Comparison of hill and row plots”
e1“grain yield, days to heading plant height and powdery mildew resistance could be evaluated with similar accuracy and precision using either of the methods”
Claim · model-written summary
Powdery mildew resistance in barley could be evaluated with similar accuracy and precision using either hill or row plots.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- accuracy and precisione1
- Qualifier
- powdery mildew resistancee1
- Comparator
- row plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“Comparison of hill and row plots”
e1“grain yield, days to heading plant height and powdery mildew resistance could be evaluated with similar accuracy and precision using either of the methods”
Claim · model-written summary
Row plot yield regressed positively and highly significantly on hill plot yield in barley, showing a strong relationship between the plot types.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- row plot yielde0
- Direction
- positivee0
- Comparator
- hill plot yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“Regression of row plot yield on hill plot yield was positive and highly significant”
Claim · model-written summary
Selection efficiency in hill plots was high for all the traits.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- Selection efficiencye0
- Value
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“Selection efficiency in hill plots was high for all the traits”
Claim · model-written summary
The percentage of barley lines with similar yield performance in both plot types was high.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- percentage of lines with similar performance for yielde0
- Value
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“The percentage of lines with similar performance for yield in both the plot types was high”
Claim · model-written summary
The authors recommend the hill plot method as a useful technique for evaluating homozygous lines for yield and other agronomic traits in a doubled haploid recurrent selection program in six-row barley.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- useful technique for evaluating homozygous lines for yield and other agronomic traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“barley”
e0“The hill plot method appears to be a useful technique for evaluating homozygous lines for yield and other agronomic traits”