Abstract
Soil salinity is one major environmental constraint on rice production, especially in coastal areas. The development of salt-tolerant genotypes is considered to be the most effective breeding strategy to overcome the constraint. This study aims to induce somatic embryos formation of East Kalimantan local rice cultivars and to obtain tolerant somatic embryos under saline condition via in vitro selection. Four commonly cultivated local rice cultivars, namely Buyung, Siam, Ketalun Tawar and Serai Gunung, were used in this study. The somatic embryos were produced using three different plant growth regulator (PGR) compositions. The salinity tolerance level of somatic embryos was induced by in vitro selection in salt toxicity medium containing 0 mM; 50 mM; 100 mM; 150 mM; 200 mM NaCl. The best medium for somatic embryogenesis contains 1 mg/l 2,4-D + 0.5 m/l BAP, resulting the highest percentage of cream and white non-compact callus on the tested cultivars. More than 70% of the somatic embryos were tolerant against salinity (NaCl 200 mM). However, only somatic embryos derived from Serai Gunung could regenerate into normal plantlets.
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Claims 3
Claim · model-written summary
The 1 mg/l 2,4-D + 0.5 m/l BAP medium gave the highest percentage of cream and white non-compact callus, compared with the other PGR compositions.
- Taxon
- Oryza sativa L.
Oryza sativat0 - Organ / stage
- non-compact calluse0
- Treatment
- 1 mg/l 2,4-D + 0.5 m/l BAPe0
- Outcome
- percentage of cream and white non-compact calluse0
- Direction
- higheste0
- Comparator
- three different plant growth regulator (PGR) compositionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Local Rice (Oryza sativa L.) Cultivars”
e0“The best medium for somatic embryogenesis contains 1 mg/l 2,4-D + 0.5 m/l BAP, resulting the highest percentage of cream and white non-compact callus on the tested cultivars”
e3“The somatic embryos were produced using three different plant growth regulator (PGR) compositions”
Claim · model-written summary
More than 70% of somatic embryos tolerated 200 mM NaCl after in vitro selection.
- Taxon
- Oryza sativa L.Oryza sativat0
- Organ / stage
- somatic embryose1
- Treatment
- NaCl 200 mMe1
- Outcome
- tolerant against salinitye1
- Value
- More than 70%e1
- Setting
- in vitro selectione4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Local Rice (Oryza sativa L.) Cultivars”
e1“More than 70% of the somatic embryos were tolerant against salinity (NaCl 200 mM)”
e4“in vitro selection in salt toxicity medium containing 0 mM; 50 mM; 100 mM; 150 mM; 200 mM NaCl”
Claim · model-written summary
Only somatic embryos derived from Serai Gunung could regenerate into normal plantlets.
- Taxon
- Oryza sativa L.Oryza sativat0
- Material
- Serai Gununge2
- Organ / stage
- somatic embryose2
- Outcome
- could regenerate into normal plantletse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Local Rice (Oryza sativa L.) Cultivars”
e2“only somatic embryos derived from Serai Gunung could regenerate into normal plantlets”
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