Abstract
Total crop dry matter (DM) production and its components, remobilisation of stem reserves, and the relation of these to grain yield were studied in 10 wheat cultivars sown at Walpeup, Boort, and Horsham in the north-western Victorian wheatbelt. Between sites, all DM components decreased in the order Horsham > Boort > Walpeup. Differences between Boort and Walpeup were not always significant. Total DM at anthesis for Walpeu,p and Boort was in a similar range, and less than that for Horsham. Yields increased in the order Walpeup < Boort < Horsham. When data from the 3 sites were combined, leaf, stem (excluding cv. Argentine IX), and total DM were related to grain yield. Within sites, ear DM at anthesis was related to grain yield. Grain yield for all cultivars at Horsham and Walpeup and 5 cultivars at Boort was greater than the increases in crop DM from anthesis to maturity, indicating that pre-anthesis stored assimilates (stem reserves) were used for grain filling. Post-anthesis decrease in stem weight was inversely related to grain yield only at Horsham, which supports the view of utilisation of stem reserves for grain filling at this site. At Boort and Walpeup there was a similar negative trend, but values for 2 cultivars at each site were outliers, which weakened the trend. The wide adaptability of the Australian cultivars used in this study may be related to the differential remobilisation of stem reserves at each site. A measure of yield stability, however, was not related to stem weight loss during the grain-filling period.
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Claims 15
Claim · model-written summary
All wheat dry matter components ranked Horsham above Boort above Walpeup.
- Taxon
- wheat
Triticum aestivume1 - Outcome
- all DM componentse0
- Direction
- decreasede0
- Setting
- Horsham > Boort > Walpeupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Between sites, all DM components decreased in the order Horsham > Boort > Walpeup”
e1“wheat cultivars”
Claim · model-written summary
Dry matter differences between Boort and Walpeup were not always significant.
- Taxon
- wheatTriticum aestivume1
- Outcome
- all DM componentse2
- Setting
- Boort and Walpeupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences between Boort and Walpeup were not always significant”
e1“wheat cultivars”
e2“all DM components”
Claim · model-written summary
Total dry matter at anthesis was similar at Walpeup and Boort and less than Horsham.
- Taxon
- wheatTriticum aestivume1
- Outcome
- Total DM at anthesise0
- Direction
- less thane0
- Setting
- Horshame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total DM at anthesis for Walpeu,p and Boort was in a similar range, and less than that for Horsham”
e1“wheat cultivars”
Claim · model-written summary
Wheat grain yield increased from Walpeup to Boort to Horsham.
- Taxon
- wheatTriticum aestivume1
- Outcome
- Yieldse0
- Direction
- increasede0
- Setting
- Walpeup < Boort < Horshame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields increased in the order Walpeup < Boort < Horsham”
e1“grain yield in wheat”
Claim · model-written summary
Across sites, leaf dry matter related to grain yield.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- leafe0
- Outcome
- grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When data from the 3 sites were combined, leaf, stem (excluding cv. Argentine IX), and total DM were related to grain yield”
e1“wheat cultivars”
Claim · model-written summary
Across sites, stem dry matter related to grain yield except in cv. Argentine IX.
- Taxon
- wheatTriticum aestivume1
- Material
- cv. Argentine IXe0
- Organ / stage
- steme0
- Outcome
- grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When data from the 3 sites were combined, leaf, stem (excluding cv. Argentine IX), and total DM were related to grain yield”
e1“wheat cultivars”
Claim · model-written summary
Across sites, total dry matter related to grain yield.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- total DMe0
- Outcome
- grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When data from the 3 sites were combined, leaf, stem (excluding cv. Argentine IX), and total DM were related to grain yield”
e1“wheat cultivars”
Claim · model-written summary
Within sites, ear dry matter at anthesis related to grain yield.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- eare0
- Outcome
- grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within sites, ear DM at anthesis was related to grain yield”
e1“wheat cultivars”
Claim · model-written summary
At Horsham and Walpeup, wheat grain yield exceeded dry matter increase from anthesis to maturity for all cultivars.
- Taxon
- wheatTriticum aestivume1
- Outcome
- Grain yielde0
- Direction
- greater thane0
- Setting
- Horsham and Walpeupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield for all cultivars at Horsham and Walpeup and 5 cultivars at Boort was greater than the increases in crop DM from anthesis to maturity”
e1“wheat cultivars”
Claim · model-written summary
At Boort, wheat grain yield exceeded postanthesis dry matter increase in five cultivars.
- Taxon
- wheatTriticum aestivume1
- Outcome
- Grain yielde0
- Direction
- greater thane0
- Value
- 5 cultivarse0
- Setting
- Boorte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield for all cultivars at Horsham and Walpeup and 5 cultivars at Boort was greater than the increases in crop DM from anthesis to maturity”
e1“wheat cultivars”
Claim · model-written summary
The yield versus dry matter comparison indicates stem reserves contributed to grain filling.
- Taxon
- wheatTriticum aestivume1
- Outcome
- grain fillinge0
- Qualifier
- pre-anthesis stored assimilates (stem reserves)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“indicating that pre-anthesis stored assimilates (stem reserves) were used for grain filling”
e1“wheat cultivars”
Claim · model-written summary
Stem weight decline after anthesis inversely related to grain yield only at Horsham.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- steme0
- Outcome
- grain yielde0
- Direction
- inversely relatede0
- Setting
- Horshame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Post-anthesis decrease in stem weight was inversely related to grain yield only at Horsham”
e1“wheat cultivars”
Claim · model-written summary
At Boort and Walpeup a similar negative trend was weakened by outliers in two cultivars at each site.
- Taxon
- wheatTriticum aestivume2
- Outcome
- grain yielde1
- Direction
- negative trende0
- Qualifier
- 2 cultivars at each site were outlierse0
- Setting
- Boort and Walpeupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Boort and Walpeup there was a similar negative trend, but values for 2 cultivars at each site were outliers, which weakened the trend”
e1“Post-anthesis decrease in stem weight was inversely related to grain yield only at Horsham”
e2“wheat cultivars”
Claim · model-written summary
The authors suggest differential stem reserve remobilisation may explain cultivar adaptability.
- Taxon
- wheatTriticum aestivume1
- Outcome
- wide adaptabilitye0
- Qualifier
- differential remobilisation of stem reservese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wide adaptability of the Australian cultivars used in this study may be related to the differential remobilisation of stem reserves at each site”
e1“wheat cultivars”
Claim · model-written summary
Yield stability was not related to stem weight loss during grain filling.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- steme0
- Outcome
- yield stabilitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A measure of yield stability, however, was not related to stem weight loss during the grain-filling period”
e1“wheat cultivars”