Abstract
A method is described in which measurements of osmoregulation made on glasshouse-grown wheat plants may be used to select lines which yield higher under conditions of water deficit in the field. The procedure involved growing F4 breeding lines in pots in a semi-controlled glasshouse. When the plants reached booting stage, they were transferred to a controlled environment chamber and droughted by withholding water. During the water deficit cycle approximately 10 flag leaf samples from each line were taken, and measurements were made of relative water content, osmotic potential and water potential. The lines were evaluated using estimates of the relative water content at either osmotic or water potential values of -2.5 MPa, after relationships between these measurements and relative water content had been established. The distribution of data into two main groups with a smaller intermediate group indicated possible single gene control. Under drought conditions in the field, lines selected from the high osmoregulating group maintained turgor to lower water potentials and gave grain yields which were 1.6 and 1.5 times greater than those selected from the low group at the F4 and F6 stages respectively.
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Claims 4
Claim · model-written summary
Osmoregulation data formed two main groups and a smaller intermediate group, suggesting possible single-gene control.
- Taxon
- wheat
Triticum aestivume1 - Outcome
- distribution of data into two main groups with a smaller intermediate groupe0
- Qualifier
- possible single gene controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The distribution of data into two main groups with a smaller intermediate group indicated possible single gene control”
e1“wheat plants”
Claim · model-written summary
Selected high-osmoregulating lines maintained turgor to lower water potentials under field drought.
- Taxon
- wheatTriticum aestivume1
- Material
- lines selected from the high osmoregulating groupe0
- Outcome
- turgore0
- Direction
- lowere0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under drought conditions in the field, lines selected from the high osmoregulating group maintained turgor to lower water potentials”
e1“wheat plants”
Claim · model-written summary
High-osmoregulating F4 lines yielded 1.6 times the low group under field drought.
- Taxon
- wheatTriticum aestivume2
- Material
- lines selected from the high osmoregulating groupe1
- Organ / stage
- F4e0
- Outcome
- grain yieldse0
- Direction
- greatere0
- Value
- 1.6e0
- Comparator
- low groupe0
- Setting
- fielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gave grain yields which were 1.6 and 1.5 times greater than those selected from the low group at the F4 and F6 stages respectively”
e1“Under drought conditions in the field, lines selected from the high osmoregulating group”
e2“wheat plants”
Claim · model-written summary
High-osmoregulating F6 lines yielded 1.5 times the low group under field drought.
- Taxon
- wheatTriticum aestivume2
- Material
- lines selected from the high osmoregulating groupe1
- Organ / stage
- F6e0
- Outcome
- grain yieldse0
- Direction
- greatere0
- Value
- 1.5 timese0
- Comparator
- low groupe0
- Setting
- fielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gave grain yields which were 1.6 and 1.5 times greater than those selected from the low group at the F4 and F6 stages respectively”
e1“Under drought conditions in the field, lines selected from the high osmoregulating group”
e2“wheat plants”