Abstract
Abstract Grain yield of naked oat ( Avena sativa var. nuda L.) is lower than that of hulled oat mainly due to reduced seedling emergence, fewer spikelets per panicle, and more grains per spikelet. This study was conducted in the field to evaluate management possibilities of reducing these undesirable traits of naked oat by adjusting seeding rate and N fertilizer application rate, thereby increasing groat yield. Studies were conducted at the Viikki Experimental Farm, University of Helsinki, Finland, in 1993 and 1994. Two N fertilizer rates (80 and 120 kg N ha −1 ) and five seeding rates (400, 500, 600, 700, and 800 viable seeds m −2 ) were used. Grain and groat yield and 24 morphophysiological traits of three naked and two hulled lines were compared. The highest yielding naked line, Rhiannon, produced approximately 9% higher groat yield and 4% more groat per panicle than the most popular Finnish hulled oat line, Veli. The same groat yield in naked lines and Veli, when measured across all treatments, may result from modest ( ≈ 2%) differences in seedling emergence. Use of seedling emergence instead of germination percent to determine planting density, and seed treatment with a fungicide, possibly contributed to uniform emergence. Naked lines tillered slightly more than hulled lines, and tiller contribution to leaf area index was higher at lower seeding rates. Use of high seeding rates reduced both number of spikelets and grains per panicle without having consistent effects on number of tertiary grains per spikelet. Number of grains per spikelet was not affected by N fertilizer rate. There was no marked advantage for using higher seeding rates and N fertilizer rates for naked lines. However, the capacity of naked lines to produce panicles through tillering compensates for reduced seedling emergence and an undesirably high grain number associated with a low number of spikelets per panicle.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Naked oat had lower grain yield than hulled oat.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield of naked oat ( Avena sativa var. nuda L.) is lower than that of hulled oat”
Claim · model-written summary
Naked oat had reduced seedling emergence and fewer spikelets but more grains per spikelet.
- Taxon
- oat
Avena sativat0 - Outcome
- reduced seedling emergence, fewer spikelets per panicle, and more grains per spikelete0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced seedling emergence, fewer spikelets per panicle, and more grains per spikelet”
t0“oat”
Claim · model-written summary
Rhiannon produced about 9% more groat yield than Veli.
- Taxon
- oatAvena sativat0
- Material
- Rhiannone0
- Outcome
- groat yielde0
- Direction
- highere0
- Value
- 9%e0
- Comparator
- Velie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhiannon, produced approximately 9% higher groat yield and 4% more groat per panicle than the most popular Finnish hulled oat line, Veli”
t0“oat”
Claim · model-written summary
Rhiannon produced 4% more groat per panicle than Veli.
- Taxon
- oatAvena sativat0
- Material
- Rhiannone0
- Outcome
- groat per paniclee0
- Direction
- moree0
- Value
- 4%e0
- Comparator
- Velie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhiannon, produced approximately 9% higher groat yield and 4% more groat per panicle than the most popular Finnish hulled oat line, Veli”
t0“oat”
Claim · model-written summary
Groat yields of naked lines and Veli were the same across treatments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The same groat yield in naked lines and Veli, when measured across all treatments”
t0“oat”
Claim · model-written summary
Naked lines tillered slightly more than hulled lines.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Naked lines tillered slightly more than hulled lines”
t0“oat”
Claim · model-written summary
Tiller contribution to leaf area index was higher at lower seeding rates.
- Taxon
- oatAvena sativat0
- Treatment
- lower seeding ratese0
- Outcome
- tiller contribution to leaf area indexe0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tiller contribution to leaf area index was higher at lower seeding rates”
t0“oat”
Claim · model-written summary
High seeding rates reduced spikelets and grains per panicle.
- Taxon
- oatAvena sativat0
- Treatment
- high seeding ratese0
- Outcome
- number of spikelets and grains per paniclee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use of high seeding rates reduced both number of spikelets and grains per panicle”
t0“oat”
Claim · model-written summary
High seeding rates had no consistent effect on tertiary grains per spikelet.
- Taxon
- oatAvena sativat0
- Treatment
- high seeding ratese1
- Outcome
- number of tertiary grains per spikelete0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“without having consistent effects on number of tertiary grains per spikelet”
t0“oat”
e1“Use of high seeding rates reduced both number of spikelets and grains per panicle”
Claim · model-written summary
N fertilizer rate did not affect grains per spikelet.
- Taxon
- oatAvena sativat0
- Treatment
- N fertilizer ratee0
- Outcome
- Number of grains per spikelete0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of grains per spikelet was not affected by N fertilizer rate”
t0“oat”
Claim · model-written summary
Higher seeding and nitrogen rates offered no marked advantage for naked lines.
- Taxon
- oatAvena sativat0
- Material
- naked linese0
- Outcome
- no marked advantagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no marked advantage for using higher seeding rates and N fertilizer rates for naked lines”
t0“oat”
Claim · model-written summary
Tillering panicles compensated for reduced emergence in naked lines.
- Taxon
- oatAvena sativat0
- Material
- naked linese0
- Outcome
- reduced seedling emergencee0
- Qualifier
- produce panicles through tilleringe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the capacity of naked lines to produce panicles through tillering compensates for reduced seedling emergence”
t0“oat”
The same questions in other papers
density · yield · Avena sativa (oats)Positive and negative results
24 papers in the same direction as this paper · 29 in the opposite direction
- no effect
- negative
- no effect
50 papers more in this group
See all 54 papers →fertilization · yield · Avena sativa (oats)Positive and negative results
16 papers in the same direction as this paper · 143 in the opposite direction
- positive
- positive
- positive
156 papers more in this group
See all 160 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.