Paper · 1997 · Japanese Journal of Crop Science

Analysis of the Dry Matter Production Process and Yield Formation of the High-Yielding Rice Cultivar Takanari, from 1991 to 1994.

Yin-Fa XU; Taiichiro OOKAWA; Kuni ISHIHARA

12
claims
26
verbatim quotes
40
citations
2
research areas
✓
Open access

Abstract

最近育成された多収性品種タカナリと日本晴を用いて, 1991年から1994年の4年間にわたって収量及び乾物生産量を比較し, タカナリの多収要因を収量構成要素, 生長解析及び受光態勢を通じて検討した. 10 a 当たり収量は, 日照時間が少なく天候不良であった 91 年と 93 年では, タカナリは528~642 kg で, 日本晴に比べて約 100 kg 高く, 日照時間が多く天候のよい 92 年と 94 年では, タカナリは 817~888 kg で, 日本晴に比べて約 230 kg 高かった. 収量構成要素についてみると, タカナリは日本晴に比べてm2当たり穂数は少ないが, 一穂穎花数が多いことによってm2当たり穎花数が多く, 特に2次枝梗着生穎花数が著しく多いにもかかわらず登熟歩合が高かった. この要因はタカナリの乾物生産量と収穫指数ともに日本晴より著しく大きいことにあった. 乾物生産についてみると, 天候のよくない 91 年では出穂期以降, タカナリの個体群生長速度 (CGR) は日本晴に比べてもっぱら純同化率 (NAR) が大きいことによって大きく, 天候のよい 94 年では最高分げつ期以降, タカナリの CGR は NAR と平均葉面積指数 (LAI) がともに大きいことによって大きかった. タカナリの NAR が高い要因は, 幼穂形成期以降, 吸光係数, 個体群内の葉の配列, 穂の位置からみた受光態勢が日本晴より良好であることにあった. またタカナリの収穫指数が高いことには出穂後の穂重増加量と茎葉に蓄積された同化産物の穂への転流量を表す茎葉重減少量の大きいことが関係していた.

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Claims 12

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

In the low-sunshine, poor-weather years 1991 and 1993, Takanari yielded 528-642 kg per 10 a, about 100 kg more than Nipponbare.

Material
タカナリe1
Outcome
10 a 当たり収量e0
Direction
高くe1
Value
約 100 kge1
Qualifier
日照時間が少なく天候不良であった 91 年と 93 年e1
Comparator
日本晴e1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“10 a 当たり収量”

✓ located verbatim in the source · abstract, characters 100–110 · show in text ↑
e1

“日照時間が少なく天候不良であった 91 年と 93 年では, タカナリは528~642 kg で, 日本晴に比べて約 100 kg 高く”

✓ located verbatim in the source · abstract, characters 113–181 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

In the high-sunshine, good-weather years 1992 and 1994, Takanari yielded 817-888 kg per 10 a, about 230 kg more than Nipponbare.

Material
タカナリe1
Outcome
10 a 当たり収量e0
Direction
高かったe1
Value
約 230 kge1
Qualifier
日照時間が多く天候のよい 92 年と 94 年e1
Comparator
日本晴e1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“10 a 当たり収量”

✓ located verbatim in the source · abstract, characters 100–110 · show in text ↑
e1

“日照時間が多く天候のよい 92 年と 94 年では, タカナリは 817~888 kg で, 日本晴に比べて約 230 kg 高かった”

✓ located verbatim in the source · abstract, characters 183–250 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Takanari had fewer panicles per m2 than Nipponbare.

Material
タカナリe0
Outcome
m2当たり穂数e0
Direction
少ないe0
Comparator
日本晴e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“タカナリは日本晴に比べてm2当たり穂数は少ない”

✓ located verbatim in the source · abstract, characters 267–290 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Takanari had more spikelets per panicle than Nipponbare.

Outcome
一穂穎花数e0
Direction
多いe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“一穂穎花数が多い”

✓ located verbatim in the source · abstract, characters 293–301 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Because of more spikelets per panicle, Takanari had more spikelets per m2.

Outcome
m2当たり穎花数e0
Direction
多くe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“一穂穎花数が多いことによってm2当たり穎花数が多く”

✓ located verbatim in the source · abstract, characters 293–318 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Takanari had a markedly larger number of spikelets on secondary rachis branches.

Outcome
2次枝梗着生穎花数e0
Direction
著しく多いe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“2次枝梗着生穎花数が著しく多い”

✓ located verbatim in the source · abstract, characters 322–337 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Takanari had a higher ripening ratio.

Outcome
登熟歩合e0
Direction
高かったe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“登熟歩合が高かった”

✓ located verbatim in the source · abstract, characters 344–353 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Both dry matter production and harvest index of Takanari were markedly greater than those of Nipponbare.

Material
タカナリe0
Outcome
乾物生産量と収穫指数e0
Direction
著しく大きいe0
Comparator
日本晴e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“タカナリの乾物生産量と収穫指数ともに日本晴より著しく大きい”

✓ located verbatim in the source · abstract, characters 360–389 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

In the poor-weather year 1991, after heading the crop growth rate (CGR) of Takanari exceeded that of Nipponbare, mainly because of a larger net assimilation rate (NAR).

Material
タカナリe0
Outcome
個体群生長速度 (CGR)e0
Direction
大きくe0
Qualifier
純同化率 (NAR) が大きいe0
Comparator
日本晴e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“天候のよくない 91 年では出穂期以降, タカナリの個体群生長速度 (CGR) は日本晴に比べてもっぱら純同化率 (NAR) が大きいことによって大きく”

✓ located verbatim in the source · abstract, characters 410–486 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

In the good-weather year 1994, after the maximum tillering stage the CGR of Takanari was larger because both NAR and mean leaf area index (LAI) were larger.

Material
タカナリe0
Outcome
CGRe0
Direction
大きかったe0
Qualifier
NAR と平均葉面積指数 (LAI) がともに大きいe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“天候のよい 94 年では最高分げつ期以降, タカナリの CGR は NAR と平均葉面積指数 (LAI) がともに大きいことによって大きかった”

✓ located verbatim in the source · abstract, characters 488–559 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

The high NAR of Takanari after panicle initiation is attributed to a better light-receiving posture (extinction coefficient, leaf arrangement within the population, panicle position) than Nipponbare.

Material
タカナリe0
Outcome
NARe0
Qualifier
受光態勢が日本晴より良好e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“タカナリの NAR が高い要因は, 幼穂形成期以降, 吸光係数, 個体群内の葉の配列, 穂の位置からみた受光態勢が日本晴より良好であることにあった”

✓ located verbatim in the source · abstract, characters 561–634 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

The high harvest index of Takanari was associated with a large post-heading increase in panicle weight and a large decrease in stem-and-leaf weight reflecting translocation of assimilates to the panicle.

Material
タカナリe0
Outcome
収穫指数e0
Direction
高いe0
Qualifier
出穂後の穂重増加量と茎葉に蓄積された同化産物の穂への転流量を表す茎葉重減少量の大きいことが関係e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“またタカナリの収穫指数が高いことには出穂後の穂重増加量と茎葉に蓄積された同化産物の穂への転流量を表す茎葉重減少量の大きいことが関係していた”

✓ located verbatim in the source · abstract, characters 636–705 · show in text ↑
t0

“Rice”

✓ located verbatim in the source · title, characters 87–91 · show in text ↑