Abstract
Abstract Marker assisted backcross breeding was used to transfer Saltol , a major QTL for seedling stage salinity tolerance from the donor FL478 to Pusa Basmati 1509 (PB 1509), a high yielding and early maturing Basmati rice variety. Foreground selection was carried out using three markers namely, AP3206f, RM3412b and RM10793, linked to Saltol . In addition, 105 genome-wide SSR markers polymorphic between FL478 and PB 1509 were used in background selection. Among the BC 3 F 4 near isogenic lines (NILs) developed, recurrent parent genome recovery ranged from 96.67 to 98.57%. Multi-season evaluation identified some of the NILs showing significantly higher yield with grain and cooking quality comparable to PB 1509. All the NILs exhibited tolerance to salinity with significantly higher relative water content, membrane stability index and proline content as compared to PB 1509. The root and shoot concentration of Na + , K + and Na + /K + in NILs was at par with FL478 under stress conditions. The gene OsHKT1 ;5 located in the Saltol region showed higher expression levels under stress indicating its role in conferring salinity tolerance. Salt tolerant NILs of PB 1509 will be useful in stabilizing production in salt affected areas.
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Claims 8
Claim · model-written summary
Recurrent parent genome recovery of the BC3F4 near isogenic lines ranged from 96.67 to 98.57%.
- Taxon
- rice
Oryza sativae1 - Material
- Pusa Basmati 1509e1
- Outcome
- recurrent parent genome recoverye2
- Value
- 96.67 to 98.57%e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pusa Basmati 1509 (PB 1509), a high yielding and early maturing Basmati rice variety”
e2“recurrent parent genome recovery ranged from 96.67 to 98.57%”
Claim · model-written summary
Some NILs showed significantly higher yield than PB 1509 in multi-season evaluation.
- Taxon
- riceOryza sativae2
- Material
- NILse1
- Outcome
- yielde1
- Direction
- significantly highere1
- Qualifier
- Multi-season evaluatione1
- Comparator
- PB 1509e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Multi-season evaluation identified some of the NILs showing significantly higher yield with grain and cooking quality comparable to PB 1509”
e2“Pusa Basmati 1509 (PB 1509), a high yielding and early maturing Basmati rice variety”
Claim · model-written summary
Grain and cooking quality of some NILs were comparable to PB 1509.
- Taxon
- riceOryza sativae2
- Material
- NILse1
- Outcome
- grain and cooking qualitye1
- Direction
- comparablee1
- Comparator
- PB 1509e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Multi-season evaluation identified some of the NILs showing significantly higher yield with grain and cooking quality comparable to PB 1509”
e2“Pusa Basmati 1509 (PB 1509), a high yielding and early maturing Basmati rice variety”
Claim · model-written summary
All NILs exhibited tolerance to salinity.
- Taxon
- riceOryza sativae2
- Material
- NILse1
- Treatment
- salinitye1
- Outcome
- tolerancee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“All the NILs exhibited tolerance to salinity with significantly higher relative water content, membrane stability index and proline content as compared to PB 1509”
e2“Pusa Basmati 1509 (PB 1509), a high yielding and early maturing Basmati rice variety”
Claim · model-written summary
NILs had significantly higher relative water content, membrane stability index and proline content than PB 1509 under salinity.
- Taxon
- riceOryza sativae2
- Material
- NILse1
- Treatment
- salinitye1
- Outcome
- relative water content, membrane stability index and proline contente1
- Direction
- significantly highere1
- Comparator
- PB 1509e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“All the NILs exhibited tolerance to salinity with significantly higher relative water content, membrane stability index and proline content as compared to PB 1509”
e2“Pusa Basmati 1509 (PB 1509), a high yielding and early maturing Basmati rice variety”
Claim · model-written summary
Root and shoot Na+, K+ and Na+/K+ concentrations in NILs were at par with FL478 under stress conditions.
- Taxon
- riceOryza sativae2
- Material
- NILse1
- Treatment
- stress conditionse1
- Outcome
- root and shoot concentratione1
- Direction
- at pare1
- Comparator
- FL478e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The root and shoot concentration of Na + , K + and Na + /K + in NILs was at par with FL478 under stress conditions”
e2“Pusa Basmati 1509 (PB 1509), a high yielding and early maturing Basmati rice variety”
Claim · model-written summary
OsHKT1;5 in the Saltol region showed higher expression under stress.
- Taxon
- riceOryza sativae2
- Treatment
- under stresse1
- Gene
- OsHKT1 ;5e1
- Outcome
- expression levelse1
- Direction
- highere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The gene OsHKT1 ;5 located in the Saltol region showed higher expression levels under stress indicating its role in conferring salinity tolerance”
e2“Pusa Basmati 1509 (PB 1509), a high yielding and early maturing Basmati rice variety”
Claim · model-written summary
Salt tolerant NILs of PB 1509 will be useful in stabilizing production in salt affected areas.
Verbatim
e1“Salt tolerant NILs of PB 1509 will be useful in stabilizing production in salt affected areas”
The same questions in other papers
salinity · physiology: water · Oryza sativa (rice)Positive and negative results
5 papers in the same direction as this paper · 27 in the opposite direction
- negative
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See all 33 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.