Stress in rice genotype
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(BQ) Ebook Plant Reverse Genetics: Methods and Protocols – Part 2 presents the following content: Chapter 10: methods for rice phenomics studies; chapter 11 : development of an efficient inverse pcr method for isolating gene tags from t-dna insertional mutants in rice; chapter 12: transposon insertional mutagenesis in rice; chapter 13: reverse genetics in medicago truncatula using tnt1 insertion mutants; chapter 14: screening arabidopsis genotypes for drought stress resistance; chapter 15 : protein tagging for chromatin immunoprecipitation from arabidopsis.
151p runordie7 30-08-2022 6 2 Download
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Soil salinity is one of the primary causes of yield decline in rice. Pokkali (Pok) is a highly salt-tolerant landrace, whereas IR29 is a salt-sensitive but widely cultivated genotype. Comparative analysis of these genotypes may offer a better understanding of the salinity tolerance mechanisms in rice.
19p viseulgi2711 31-08-2021 9 1 Download
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Abscisic acid (ABA) and proline play important roles in rice acclimation to different stress conditions. To study whether cross-talk exists between ABA and proline, their roles in rice acclimation to hypoxia, rice growth, root oxidative damage and endogenous ABA and proline accumulation were investigated in two different rice genotypes (‘Nipponbare’ (Nip) and ‘Upland 502’ (U502)).
14p vijichea2711 28-05-2021 8 1 Download
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Salinity, as one of the main abiotic stresses, critically threatens growth and fertility of main food crops including rice in the world. To get insight into the molecular mechanisms by which tolerant genotypes responds to the salinity stress, we propose an integrative meta-analysis approach to find the key genes involved in salinity tolerance.
14p vijichea2711 28-05-2021 14 1 Download
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The present research work was conducted at high and normal salt stress soil condition to study the inherent genetic variation existing among the 78 accessions including seven standards (checks) varieties viz., CSR36, CSR10 , CST7-1, CSR27, Usar Dhan 3 for salinity and alkalinity tolerant, while Sambha Sub1 as for general stress, and PUSA 44 as salt stress sensitive were grown in Augmented Randomized Block Design as parents for developing new rice varieties to break the yield barrier under sodic land.
15p chauchaungayxua10 18-03-2021 11 3 Download
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The Present study was carried out in the wire-netting house of the Krishi Vigyan Kendra, Kalahandi during Rabi 2014-15.The objective of the present endeavour was to screen 6 number of Paddy varieties (early group,75-85 days) for higher photosynthetic efficiency with higher productivity under simulated moisture stress conditions. The experiment was laid out in a factorial CRD with three stress treatments and three replications.
11p cothumenhmong9 18-01-2021 12 2 Download
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The present experiment was conducted in Adaptive Research Station, Sakhigopal, Puri to screen out the rice genotypes for submergence adaptation traits under agro-climatic ecosystem of Odisha. The present study indicated that among the selected genotypes “Varsadhan” contributed highest yield.
9p gaocaolon9 22-12-2020 6 2 Download
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Genetic analysis of biparental progenies resulted that, the traits viz,. days to 50% RWC and plant height were governed by additive gene action for improvement of these traits while, days to flowering, productive tillers per plant, 1000- grain weight, and grain yield can be improved by heterosis breeding. Main objective of the study was to evaluate rice genotypes for yield and yield related traits for heterosis to develop new breeding lines that can perform better in water stress conditions.
15p gaocaolon9 22-12-2020 21 2 Download
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A field screening of thirty four drought tolerant rice genotypes was conducted during Kharif 2017 and Kharif 2018 with the objective to identify different genotypes under drought stress condition. Significant variation was observed among genotypes for all studied traits including leaf rolling, leaf drying and relative water content.
8p trinhthamhodang1216 19-11-2020 6 1 Download
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Aluminium (Al) toxicity is the major limiting factor of crop production in acidic soils. Most of the soils in North eastern region are acidic. In order to improve the crop production in acidic soil conditions, screening genotypes which are tolerant to aluminium induced stress would be immense importance.
8p trinhthamhodang1216 19-11-2020 9 1 Download
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The present study was carried out in sixteen genotypes having different aptitude for tolerance to stress. Drought stress was imposed at early reproductive phase of growth. Despites of reduction in plant height and number of tillers, genotypes have shown least reduction in the grain yield under drought stress.
12p trinhthamhodang1216 19-11-2020 18 1 Download
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Sixty four landraces were evaluated for 10 yield and its component traits. Analysis of variance showed significant difference among the genotypes to all the characters under both control and low-moisture stress condition. Environmental influence was meagre on expression of characters as evidenced by narrow gap between GCV and PCV for most of the characters.
11p nguathienthan8 20-10-2020 11 1 Download
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Drought is one of the major abiotic stress that limits rice production in Assam, India. A traditional drought tolerant local cultivar ‘Banglami’ was crossed with a high yielding rice variety ‘Ranjit’ and 180 F2 plants were raised. The 110 polymorphic SSR markers were used for genotyping of F2 plants.
13p trinhthamhodang1215 23-09-2020 9 2 Download
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The present study was conducted to evaluate the effect of phosphorus deficiency stress on root traits of diverse rice genotypes. Roots of rice genotypes grown in root rhizotron having soil P (P2O5 ≤ 7.59kg/ha), with and without P supplementation were compared for difference in total root length, lateral branching, surface area and volume.
12p quenchua8 29-09-2020 12 1 Download
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Present study indicated that translocation of soluble sugar for grain growth is supported by ACR and ATR was higher in stress. Grain yield was significantly correlated with ACR and ATR.
11p trinhthamhodang1215 23-09-2020 12 1 Download
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The aim of this work was to study the comparative effects of different concentrations of elicitors on proline accumulation and antioxidant enzyme activities (e.g., CAT, POD and SOD) of two rice varieties.
8p cothumenhmong7 09-09-2020 20 2 Download
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Drought is a major constraint in rice- growing areas of Asia. Identification of genomic regions containing QTLs governing drought tolerance traits is inevitable for developing novel genotypes with enhanced drought tolerance. A RIL population of 122 lines derived from a cross of Daggaddeshi/Danteswari was used for identification of QTL governing traits associated with yield was used in the study. A new QTL (qDTY12.2) linked to grain yield was identified in both stress and non-stress conditions.
9p kethamoi7 26-08-2020 13 2 Download
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A potted experiment was carried out in the net house of the Plant Breeding Unit, TRRI, Aduthurai in 2020 to screen and evaluate the performance of diverse rice genotypes for anaerobic germination ability with a view to select the suitable genotypes for multiple stress tolerance (drought and anaerobic germination) that will fit into the existing niche in the DSR. The aim of this experiment is to identify short duration genotypes with early vigour and potential to germinate under anaerobic condition.
10p nguaconbaynhay7 15-08-2020 12 1 Download
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Coastal Odisha is one of the most flood prone areas of India where the paddy crop in the wet season is often devastated by flash floods with an average productivity of only 0.5–0.8 t ha⁻ ¹. The present study showed that farmers preferred to cultivate low yielding traditional land races owing to their better flood tolerance and the unavailability of flood tolerant high yielding varieties (HYVs).
10p nguathienthan5 04-06-2020 16 1 Download
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Intermittent drought stress in rainfed ecosystem significantly limits the production of Ranjit, the most predominant high yielding rice variety of North East India. In order to understand the genetic basis of drought tolerance a mapping population comprising 85 F4 individuals between ‘Ranjit’ and a drought tolerant cultivar, ARC10372 was developed and genotyped with 80 microsatellite markers. 7 possible linkage groups were analysed by changing the LOD values and the recombination frequencies in the Join map 4.0 software package.
6p caygaocaolon5 27-05-2020 12 0 Download