Paper · 1995 · Japanese Journal of Crop Science

Differences in Dry Matter Production and Root System Development between Soybean Cultivars under Deficient Soil Moisture Conditions.

Yushi HIDA; Tadashi HIRASAWA; Kuni ISHIHARA

12
claims
27
verbatim quotes
12
citations
3
research areas
✓
Open access

Abstract

前報において, 生態型, 伸育型が等しくても品種によって土壌水分の低下に伴う乾物重や子実重の減少程度が異なり, この相違には根群の発達程度の相違が関係していることが推察された. この点をさらに詳しく検討するため, エンレイとタチナガハを土壌水分の減少する条件で個体群として生育させた. タチナガハはエンレイに比べて低土壌水分条件において登熟期間の日中の葉の木部の水ポテンシャルが高く, 拡散抵抗が低く維持され, その結果, 純同化率(NAR)の減少程度が小さいことによって, 乾物生産と子実重の減少程度が小さいという, 前報と同様の結果が個体群として生育させた時にも得られた. さらにタチナガハはエンレイに比べて, 登熟期の低土壌水分条件で葉の老化に伴う光合成速度の減少が小さく, これもタチナガハのNARの減少が小さいことに関係していた. 低土壌水分条件では, コアサンプリング法で測定した根長密度, ミニリゾトロン法で測定した根長のいずれもタチナガハはエンレイに比べて大きく, 両品種の差は土壌の深層で顕著であった. 土壌水分の減少量から推定した吸水量は土壌の深層でタチナガハで大きく, 土壌水分が減少するとタチナガハはエンレイに比べて根系が土壌深くに密に良く発達する性質をもつことが明らかとなった. 以上のことから, 低土壌水分条件で認められた地上部の生理的性質の両品種の相違は, このような根系の発達の相違によってもたらされたものと考えられた.

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Claims 12

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Tachinagaha maintained higher daytime leaf xylem water potential than Enrei under low soil moisture.

Taxon
SoybeanGlycine maxt0
Material
タチナガハe0
Outcome
葉の木部の水ポテンシャルe0
Direction
高くe0
Qualifier
低土壌水分条件e0
Comparator
エンレイe0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“タチナガハはエンレイに比べて低土壌水分条件において登熟期間の日中の葉の木部の水ポテンシャルが高く”

✓ located verbatim in the source · abstract, characters 143–191 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Tachinagaha maintained lower diffusion resistance than Enrei under low soil moisture.

Taxon
SoybeanGlycine maxt0
Material
タチナガハe0
Outcome
拡散抵抗e0
Direction
低く維持されe0
Comparator
エンレイe0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“タチナガハはエンレイに比べて低土壌水分条件において登熟期間の日中の葉の木部の水ポテンシャルが高く, 拡散抵抗が低く維持され”

✓ located verbatim in the source · abstract, characters 143–204 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Tachinagaha had a smaller decline in net assimilation rate than Enrei.

Taxon
SoybeanGlycine maxt0
Material
タチナガハe1
Outcome
純同化率(NAR)e0
Direction
減少程度が小さいe0
Comparator
エンレイe1

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“純同化率(NAR)の減少程度が小さい”

✓ located verbatim in the source · abstract, characters 212–230 · show in text ↑
e1

“タチナガハはエンレイに比べて低土壌水分条件”

✓ located verbatim in the source · abstract, characters 143–164 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Tachinagaha had a smaller decrease in dry matter production than Enrei.

Taxon
SoybeanGlycine maxt0
Material
タチナガハe1
Outcome
乾物生産e0
Direction
減少程度が小さいe0
Comparator
エンレイe1

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“乾物生産と子実重の減少程度が小さい”

✓ located verbatim in the source · abstract, characters 238–255 · show in text ↑
e1

“タチナガハはエンレイに比べて低土壌水分条件”

✓ located verbatim in the source · abstract, characters 143–164 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Tachinagaha had a smaller decrease in grain weight than Enrei.

Taxon
SoybeanGlycine maxt0
Material
タチナガハe1
Outcome
子実重e0
Direction
減少程度が小さいe0
Comparator
エンレイe1

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“乾物生産と子実重の減少程度が小さい”

✓ located verbatim in the source · abstract, characters 238–255 · show in text ↑
e1

“タチナガハはエンレイに比べて低土壌水分条件”

✓ located verbatim in the source · abstract, characters 143–164 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Tachinagaha showed a smaller senescence-associated fall in photosynthesis.

Taxon
SoybeanGlycine maxt0
Material
タチナガハe0
Outcome
光合成速度e0
Direction
減少が小さくe0
Comparator
エンレイe0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“タチナガハはエンレイに比べて, 登熟期の低土壌水分条件で葉の老化に伴う光合成速度の減少が小さく”

✓ located verbatim in the source · abstract, characters 292–339 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Core sampling showed greater root length density for Tachinagaha than Enrei under low moisture.

Taxon
SoybeanGlycine maxt0
Material
タチナガハe0
Outcome
根長密度e0
Direction
大きくe0
Comparator
エンレイe0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“コアサンプリング法で測定した根長密度, ミニリゾトロン法で測定した根長のいずれもタチナガハはエンレイに比べて大きく”

✓ located verbatim in the source · abstract, characters 382–439 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Minirhizotron measurement showed greater root length for Tachinagaha than Enrei.

Taxon
SoybeanGlycine maxt0
Material
タチナガハe0
Outcome
根長e0
Direction
大きくe0
Comparator
エンレイe0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“ミニリゾトロン法で測定した根長のいずれもタチナガハはエンレイに比べて大きく”

✓ located verbatim in the source · abstract, characters 402–439 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

The root differences between cultivars were pronounced in deeper soil.

Taxon
SoybeanGlycine maxt0
Outcome
両品種の差e0
Setting
土壌の深層e0

Not reportedDirection

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“両品種の差は土壌の深層で顕著であった”

✓ located verbatim in the source · abstract, characters 441–459 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Estimated water uptake in deeper soil was greater for Tachinagaha.

Taxon
SoybeanGlycine maxt0
Material
タチナガハe0
Outcome
吸水量e0
Direction
大きくe0
Setting
土壌の深層e0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“吸水量は土壌の深層でタチナガハで大きく”

✓ located verbatim in the source · abstract, characters 475–494 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Under falling soil moisture, Tachinagaha developed denser and deeper roots than Enrei.

Taxon
SoybeanGlycine maxt0
Material
タチナガハe0
Outcome
根系が土壌深くに密に良く発達するe0
Comparator
エンレイe0

Not reportedDirection

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“土壌水分が減少するとタチナガハはエンレイに比べて根系が土壌深くに密に良く発達する”

✓ located verbatim in the source · abstract, characters 496–536 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The authors attribute aboveground physiological differences to root-system development differences.

Taxon
SoybeanGlycine maxt0
Outcome
地上部の生理的性質の両品種の相違e0
Qualifier
根系の発達の相違e0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Soybean”

✓ located verbatim in the source · title, characters 73–80 · show in text ↑
e0

“地上部の生理的性質の両品種の相違は, このような根系の発達の相違によってもたらされたものと考えられた”

✓ located verbatim in the source · abstract, characters 575–625 · show in text ↑