Abstract
ABSTRACT One of efforts to increase rice production at swamp area which is frequently flooded is the use of submergence tolerant rice varieties. The objectives of this research was to improve plant tolerance after submergence stress for 14 days in BC1F1 of crosses between local superior varieties and Sub1 gen donor (FR13A). The studies were carried out in two stages: 1) Crossing local superior varieties, i.e., Pegagan (Pgn), Siam (Sm), Payak Selimbuk (Pys), dan Pelita Rampak (Plr) to submergence tolerant variety FR13A; and 2) submergence tolerance evaluation of the progeny. The first study was conducted at green house of Graduate Study Sriwijaya University, Palembang. The second study was carried out at field experiment of Central Research and Development of Agricultural Biotechnology and Genetic Resources in Bogor. All studies were conducted from March 2011 until March 2013. The first study was the introgression of Sub1 gene into local genotypes Payak Selimbuk, Pegagan, Siam and Pelita Rampak from FR13A. The second study was evaluation of BC1F1 plant performance after submergence treatment for 14 days. The results showed that introgression of Sub1 gene into local varieties improved submergence tolerance as indicated by higher percentage of survived plants, lower decrease of plant dry weight, and lower decrease of grain weight per panicle compared to parents. Keywords: Sub1 gene, local swamp rice, submergence tolerant
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Claims 3
Claim · model-written summary
Introgressing Sub1 into local swamp rice raised the percentage of plants surviving 14 days of submergence compared with parents.
- Taxon
- rice
Oryza sativae0 - Material
- BC1F1e1
- Treatment
- submergence stress for 14 dayse1
- Gene
- Sub1 genee2
- Outcome
- percentage of survived plantse2
- Direction
- highere2
- Comparator
- parentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase rice production at swamp area”
e1“plant tolerance after submergence stress for 14 days in BC1F1 of crosses between local superior varieties and Sub1 gen donor (FR13A)”
e2“The results showed that introgression of Sub1 gene into local varieties improved submergence tolerance as indicated by higher percentage of survived plants, lower decrease of plant dry weight, and lower decrease of grain weight per panicle compared to parents”
Claim · model-written summary
Introgressing Sub1 lowered the decrease in plant dry weight after submergence compared with parents.
- Taxon
- riceOryza sativae0
- Material
- BC1F1e1
- Treatment
- submergence stress for 14 dayse1
- Gene
- Sub1 genee2
- Outcome
- decrease of plant dry weighte2
- Direction
- lowere2
- Comparator
- parentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase rice production at swamp area”
e1“plant tolerance after submergence stress for 14 days in BC1F1 of crosses between local superior varieties and Sub1 gen donor (FR13A)”
e2“The results showed that introgression of Sub1 gene into local varieties improved submergence tolerance as indicated by higher percentage of survived plants, lower decrease of plant dry weight, and lower decrease of grain weight per panicle compared to parents”
Claim · model-written summary
Introgressing Sub1 lowered the decrease in grain weight per panicle after submergence compared with parents.
- Taxon
- riceOryza sativae0
- Material
- BC1F1e1
- Treatment
- submergence stress for 14 dayse1
- Gene
- Sub1 genee2
- Outcome
- decrease of grain weight per paniclee2
- Direction
- lowere2
- Comparator
- parentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase rice production at swamp area”
e1“plant tolerance after submergence stress for 14 days in BC1F1 of crosses between local superior varieties and Sub1 gen donor (FR13A)”
e2“The results showed that introgression of Sub1 gene into local varieties improved submergence tolerance as indicated by higher percentage of survived plants, lower decrease of plant dry weight, and lower decrease of grain weight per panicle compared to parents”