Genetic potentiality of lowland indigenous indica rice (Oryza sativa L.) landraces to anaerobic germination potential

Barik, Jijnasa; Kumar, Vikash; Lenka, Sangram K.; Panda, Debabrata

doi:10.1007/s40502-019-00441-3

Cited by 8 publications

(20 citation statements)

References 28 publications

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“…Among 188 F 2:3 population of Swarna Sub1/AC39416A studied 12 lines for two weeks treatment and ve lines for three weeks treatment have shown AG percent on par with the donor parent AC39416A. Barik et al, (2019) reported similar trend of variation in anaerobic germination per cent. Doley et al, (2018) noticed that survival per cent was correlated positively with coleoptiles elongation which helps in obtaining oxygen from surroundings.…”

Section: Discussionmentioning

confidence: 80%

Mapping of Qtl for Anaerobic Germination Using the Donor Ac39416a in the Genetic Background of Swarna Sub-1 (Oryza Sativa L.)

Saimohan

Chamundeswari

Haritha

et al. 2021

Preprint

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Background: Anaerobic germination is an important trait in particular for cultivation under direct seeding method in kharif season, as well as during nursery rising for transplant rice, as sometimes unexpected rains immediately after sowing will drastically reduce the plant population.Methods and Results: In the present investigation phenotypic screening for Anaerobic germination (AG) was carried out using 188 F2:3 population of Swarna Sub1/AC39416A at RARS (APRRI), Maruteru. The mean anaerobic germination per cent recorded after the two weeks of submergence ranged from 0% to 95% with overall mean of 47.51% whereas, for three weeks of submergence, the mean anaerobic germination per cent recorded between 0 and 95%, with overall mean of 37.66%. 134 (19.42%) out of 687 Simple Sequence Repeats (SSR) markers surveyed were polymorphic between the parents. Linkage analysis was done with 83 SSR markers showing polymorphism clearly using the integrated software called QTL IciMapping software version 4.1.0. The length of linkage map constructed across whole genome was 3600.8 cM and identified seven QTLs viz., qAG2, qAG3, qAG7-1, qAG7-2, qAG9, qAG10 and qAG12. All these seven QTLs explained phenotypic variance of about 37.47% collectively for AG trait, with their individual contributions ranging from 3.5% to 8.67% of phenotypic variation and LOD scores of 2.6 to 5.86. The LOD score and phenotypic variance is 5.86 and 8.67% respectively for qAG10 a novel QTL identified in the present study using ICIM method. Conclusion: QTL “qAG12-1” identified in this study may be considered for introgression into popular elite rice varieties otherwise susceptible for anaerobic germination after fine mapping studies.

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Section: Discussionmentioning

confidence: 80%

Mapping of Qtl for Anaerobic Germination Using the Donor Ac39416a in the Genetic Background of Swarna Sub-1 (Oryza Sativa L.)

Saimohan

Chamundeswari

Haritha

et al. 2021

Preprint

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“…However, the tolerant responses are faster coleoptiles elongation, rapid germination rate, expressing ‘expansin genes’, elevating amylase activity, anaerobic respiration, etc . [ 33 - 37 ]. Tolerant-genotypes have the ability of hydrolyzation of starch to metabolize sugars for generating energy through successive glycolysis and alcoholic fermentation [ 38 , 39 ].…”

Section: Types Of Flooding and Their Tolerance Responsesmentioning

confidence: 99%

“…This is due to the sensitivity of most of the rice varieties to anaerobic condition s at the time of germination. Thus, rice cultivars with better anaerobic germination potential at the initial period of growth are highly needed in order to make direct seeding sustainable in both rainfed and irrigated areas [ 23 , 33 , 34 , 37 , 43 - 45 ].…”

Section: Types Of Flooding and Their Tolerance Responsesmentioning

confidence: 99%

“…Yet, some AG potential varieties have been identified by other workers and the identified genotypes were used in genetic studies and breeding [ 19 , 43 , 98 - 100 ]. A total of 88 lowland rice landraces were characterized based on morpho-physiological variants under anaerobic condition and three rice landraces (Bausaganthi, Patadhan, Basantichudi) were observed to have superior anaerobic germination potential compared to other rice genotypes [ 33 ]. The screening and inherent genetic diversity of 107 rice genotypes were carried out under anaerobic condition for 14 days and several promising flooding tolerant genotypes during germination were identified [ 11 , 101 ].…”

Section: Screening Of Rice Genetic Resources For Flooding Tolerancementioning

confidence: 99%

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Recent Advances of Genetic Resources, Genes and Genetic Approaches for Flooding Tolerance in Rice

Panda

Barik

Sarkar

2021

Self Cite

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: Flooding is one of the most hazardous natural disasters and a major stress constraint to rice production throughout the world, which results in huge economic losses. The frequency and duration of flooding is predicted to increase in near future as a result of global climate change. Breeding of flooding tolerance in rice is a challenging task because of the complexity of the component traits, screening technique, environmental factors and genetic interactions. A great progress has been made during last two decade to find out the flooding tolerance mechanism in rice. An important breakthrough in submergence research was achieved by identification of major quantitative trait locus (QTL) SUB1 in rice chromosomes that acts as the primary contributor for tolerance. This enabled the use of marker-assisted backcrossing (MABC) to transfer SUB1 QTL into popular varieties which showed yield advantages in flood prone area. However, SUB1 varieties are not always tolerant to stagnant flooding and flooding during germination stage. So, gene pyramiding approach can be used by combining several important traits to develop new breeding rice lines that confer tolerances to different types of flooding. This review highlights the important germplasm/genetic resources of rice to different types of flooding stress. A brief discussion on the genes and genetic mechanism in rice exhibited to different types of flooding tolerance was discussed for development of flood tolerant rice variety. Further research on developing multiple stresses tolerant rice can be achieved by combining SUB1 with other tolerance traits/genes for wider adaptation in the rain-fed rice ecosystems.

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“…In this way, seedlings can reach the water surface and diffuse O2 to elongate the roots and shoots ( Ismail et al., 2009 ; Kretzschmar et al., 2015 ). Adaptive mechanisms and some of the key traits associated with anaerobic stress tolerance include anaerobic germination percentage (AGP) ( Septiningsih et al., 2013 ; Barik et al., 2019 ), anaerobic vigor index (AVI) ( Barik et al., 2019 ), response index (RI) ( Islam et al., 2022 ), rapid elongation of the coleoptile ( Kretzschmar et al., 2015 ), and carbohydrate reserves ( Ella et al., 2011 ; Ismail et al., 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Unraveling the genetic potential of native rice (Oryza sativa L.) landraces for tolerance to early-stage submergence

Shanmugam,

Manivelan,

Deepika

et al. 2023

Front. Plant Sci.

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Direct-seeded rice (DSR) is a promising alternative to the traditional puddled rice system. It has become more popular among rice growers as a result of socioeconomic shifts and global climate change. Although DSR offers advantages, rice plants experience greater anaerobic stress at sowing from unpredicted rainfall. Rice is unique among cereals in its ability to germinate under anaerobiosis. The coleoptile of rice rapidly elongates above the water surface to obtain more oxygen and enhance vigorous seedling growth. A panel of 115 landraces and four check varieties were subjected to anaerobic stress with a water level of 10 cm for up to 15 days. The present study observed significant variation in anaerobic germination percentage (AGP) (10%–100%) and anaerobic vigor index (AVI) (150–4,433). Landraces Karuthakar, Poovan samba, Mattaikar, Edakkal, Manvilayan, and Varappu kudainchan were identified as genotypes tolerant to early water submergence. The shoot and root length of susceptible landraces were significantly lower than the tolerant landraces under hypoxia condition, implying that landraces with longer shoots and roots had a higher survival rate. The response index substantiated this. The results clearly show that tolerant and moderately tolerant landraces possessed higher mean values for root and shoot lengths than susceptible landraces. The landraces grouped under the long–bold category had superior AGP and AVI scores to other grain type groups. This raises the possibility that differences in kernel breadth, which is linked to grain type, could affect anaerobic germination potential. Molecular confirmation using gene-specific markers, viz., DFR, TTP_G4, RM478, RM208, and RM24161, for which the polymorphic information content (PIC) value ranged from 0.36 (RM478) to 0.68 (RM206) suggests that this diverse panel of landraces must be assessed further using advanced molecular tools to precisely clarify the genetic mechanism behind this phenomenon. The tolerant landraces thus identified may become donors in breeding programs. The introduction of these traits would contribute to the development of rice varieties tolerant to anaerobic stress, resulting in sustainable yields. This solution could promote the DSR system across the world.

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Genetic potentiality of lowland indigenous indica rice (Oryza sativa L.) landraces to anaerobic germination potential

Cited by 8 publications

References 28 publications

Mapping of Qtl for Anaerobic Germination Using the Donor Ac39416a in the Genetic Background of Swarna Sub-1 (Oryza Sativa L.)

Mapping of Qtl for Anaerobic Germination Using the Donor Ac39416a in the Genetic Background of Swarna Sub-1 (Oryza Sativa L.)

Recent Advances of Genetic Resources, Genes and Genetic Approaches for Flooding Tolerance in Rice

Unraveling the genetic potential of native rice (Oryza sativa L.) landraces for tolerance to early-stage submergence

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