Towards Developing Salinity Tolerant Rice Adaptable  for Coastal Regions in Indonesia

Hairmansis, Aris; Nafisah, Nafisah; Jamil, Ali

doi:10.18502/kls.v2i6.1021

Cited by 23 publications

(20 citation statements)

References 13 publications

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“…One well-recognized approach is the adoption of salt tolerant rice in salinity prone areas [17]. Traditional breeding approaches to develop salt tolerant varieties have been applied for a long time, but progress has been slow due to the complexity of salt tolerance mechanism and genotype by environment interactions [18].…”

Section: Introductionmentioning

confidence: 99%

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Yield Gap Management under Seawater Intrusion Areas of Indonesia to Improve Rice Productivity and Resilience to Climate Change

et al. 2019

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The purpose of this study was to evaluate (a) the performance of two modern rice varieties (non-tolerant and tolerant for saline soils) under different fertilizer management options, and (b) assess the yield gap and income increase through proper crop and nutrient management at different levels of soil salinity. Experiments were carried out in moderate and high levels of soil salinity in West Java, Indonesia. A split plot design with three replications was used. The main plots included two rice varieties, Inpari-30 Ciherang sub1 and Inpari-34 (tolerant variety for saline soils), and subplots included eight fertilizer management treatments. Farmer participatory field trials were also established across three levels of soil salinity with four different rice varieties, Sidenuk, Inpari 30, Inpari 34, and Inpari 35, and a fertilizer package consisting of organic and inorganic fertilizers. Under low and moderate soil salinities, Sidenuk and Inpari 30 with recommended practice had higher productivity and economic benefit compared to the saline tolerant rice varieties, Inpari 34 and Inpari 35. However, under high soil salinity, the yields of Inpari 34 and Inpari 35 with recommended practice were 93% higher than farmers’ practice, representing an exploitable yield gap of 1.3 t ha−1 and benefit above fertilizer cost of USD 301 ha−1. The combination of tolerant varieties and improved nutrient management use for rice production can therefore be used as a strategy for improving farmers’ income and livelihoods in coastal areas of Indonesia.

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Section: Introductionmentioning

confidence: 99%

“…These two varieties are tolerant to salinity stress at the seedling stage at an EC value of 12 dS m −1 and thus show great potential [17].…”

Section: Introductionmentioning

confidence: 99%

Yield Gap Management under Seawater Intrusion Areas of Indonesia to Improve Rice Productivity and Resilience to Climate Change

et al. 2019

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“…Both varieties showed normal growth with no leaf symptoms of salt injury. Inpari-34 and Inpari-35 were more tolerant of salinity stress at seedling stage as found by Hairmansis et al (2017). It was observed that there is no significant difference in germination percentage between cultivar PL-1, PL-2, Inpari 30 and Sidenuk.…”

Section: Germination Percentages and Salt Injury Scorementioning

confidence: 63%

“…Six rice genotypes were used in this study, i.e., (1) Inpari-34 (BR41xIR61920-3B-22-2), (2) Inpari-35 (IR10206-29-212xSUAKOKO), (3) PL-1, (4) PL-2, (5) Inpari-30 (Ciherang sub1), and (6) Sidenuk (Diah Suci variety is irradiated by gamma rays). Inpari 30 and Sidenuk are the modern rice variety used by farmers while Inpari-34 and Inpari-35 were the tolerant variety for saline soils (Hairmansis et al 2017). Two genotypes PL-1 and PL-2 were promising lines to salinity.…”

Section: Field Experimentsmentioning

confidence: 99%

“…Through national rice consortium, Inpari 34 and Inpari 35, two salinity tolerant rice varieties were released in 2014. These two varieties were more tolerant of salinity stress at seedling stage with Electrical Conductivity (EC) of 12dS m -1 (Hairmansis et al 2017). These rice varietal development efforts could be able to address the future challenges of rice production in coastal deltas of Indonesia.…”

Section: Introductionmentioning

confidence: 99%

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Yield of different rice cultivars at two levels of soil salinity under seawater intrusion in West Java, Indonesia

Subekti

Sembiring²,

Nugraha

et al. 2019

Biodiversitas

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Abstract. Subekti NA, Sembiring H, Erythrina, Nugraha D, Priatmojo B, Nafisah. 2020. Yield of different rice cultivars at two levels of soil salinity under seawater intrusion in West Java, Indonesia. Biodiversitas 21: 14-20. A tendency to use saline water in rice production is rising in recent years, but the adaptation of variety under saline conditions is still questionable. The aim of the study was to evaluate the response of several rice cultivars on the growth and yield of rice under seawater intrusion in West Java. Two salt-tolerant cultivars (Inpari 34 and Inpari 35), two promising lines (PL-1 and PL-2) and two modern cultivars (Inpari 30 (Ciherang sub1) and Sidenuk) were evaluated in two soil salinity levels. In each farmer's field a Randomized Complete Block Design was applied with three replications per treatment. Results showed that Sidenuk and Inpari 30 produced same yield compared to tolerant varieties and promising lines during dry season under moderate soil salinity. There were not much different among the cultivars tested in terms of plant height and tiller number as well as the biomass and harvest index. However, under high soil salinity seed germination, plant height, number of tillers per plant, above-ground biomass, spikelet number, percent of sterile florets and productivity were significantly affected. Saline tolerant varieties Inpari 34 and Inpari 35 showed their superiority compared to non-tolerant varieties. Both varieties produced 40% higher yield than Inpari 30 (Ciherang sub 1) and Sidenuk.

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Quantitative trait loci, candidate genes, and breeding lines to improve salt tolerance at the flowering and seedling stages in rice

Pruthi

Chapagain

Coronejo

et al. 2022

Food and Energy Security

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Salinity is a major environmental constraint that limits growth and productivity of rice all over the world. Although rice plants are vulnerable to salt stress at both seedling and flowering stages, genetic dissection of salt tolerance at the flowering stage is challenging due to non‐uniformity of stress application at the appropriate growth stage. The present study was conducted to identify quantitative trait loci (QTLs) and candidate genes associated with the flowering stage salt tolerance and compare with those associated with the seedling stage using a high‐resolution genetic map. A population of advanced generation introgression lines with uniform flowering time was evaluated for salt tolerance at the seedling and flowering stages. A genetic map was constructed using 14,230 polymorphic single nucleotide polymorphism markers between donor parents (TCCP and FL478) and the recurrent parent (RP) (Jupiter). Seventeen and 28 QTLs were identified for traits associated with salt tolerance at the seedling and flowering stage, respectively. Important candidate genes present in the flowering stage salt responsive QTL regions were OsHAK13, OsCYP21‐4, GIF1, and OsRGG20, whereas the seedling stage QTL intervals harbored genes such OsHAK20, STRK1, and OsMADS25. Gene expression analysis revealed upregulation of OsHAK13 and OsCYP21‐4 in TCCP, 3 days after exposure to salt stress at the flowering stage. Similarly, expression of OsHAK20, STRK1, and OsMADS25 was highly upregulated in TCCP under salt stress at the seedling stage. Due to differences in genetic control of salt tolerance at both seedling and flowering stages, stacking of genes/QTLs for salt tolerance at both stages will be needed. Since some beneficial QTLs were also contributed by the RP, emphasis should be on targeting the desirable QTLs from donors while retaining the beneficial QTLs of the RP to improve salinity tolerance in rice using marker‐assisted selection.

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Towards Developing Salinity Tolerant Rice Adaptable for Coastal Regions in Indonesia

Cited by 23 publications

References 13 publications

Yield Gap Management under Seawater Intrusion Areas of Indonesia to Improve Rice Productivity and Resilience to Climate Change

Yield Gap Management under Seawater Intrusion Areas of Indonesia to Improve Rice Productivity and Resilience to Climate Change

Yield of different rice cultivars at two levels of soil salinity under seawater intrusion in West Java, Indonesia

Quantitative trait loci, candidate genes, and breeding lines to improve salt tolerance at the flowering and seedling stages in rice

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