Exploration of Genetic Diversity in Traditional Landraces of Rice for Yield and Its Attributing Traits under Saline Stress Condition

Raghavendra, Pongali B.; Kumar, B. Mohan; Madhuri, R.; Gangaprasad, S.; Murthy, S. L. Krishna; Dhananjaya, B. C.; Halingali, B. I.; Hittalmani, Shailaja

doi:10.20546/ijcmas.2018.706.394

Cited by 3 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, these characters may be considered as principal discriminatory traits for this germplasm indicating that selection is effective in favour of these traits. Similar results were reported by Beevi and Venkatesan (2015) and Archana et al, (2018) for number of filled spikelets per panicle, Prasad et al, 2018 for spikelet fertility and 1000 seed weight, for grain yield per plant and 1000 grain weight by Sowmiya and Venkatesan (2017) for plant height, spikelet per panicle and grain yield /plant by Raghavendra et al, (2018).…”

Section: Principal Component Analysis (Pca)supporting

confidence: 86%

Genetic Diversity and Principal Component Analysis for Yield and Nutritional Traits in Rice (Oryza sativa L.)

Rao¹,

Roja²,

Rao³

2020

Int.J.Curr.Microbiol.App.Sci

View full text Add to dashboard Cite

Pancharatna Kamanpur (Village), Peddapalli (District), Telangana 20 Parimalasanna Gummakonda (Village), Nagarkurnool (District), Telangana 21 Pathariya Gummakonda (Village), Nagarkurnool (District), Telangana. 22 Poongar Kamanpur (Village), Peddapalli (District), Telangana 23 Ramsri Gummakonda (Village), Nagarkurnool (District), Telangana 24 Ramyagali Kamanpur (Village), Peddapalli (District), Telangana 25 Ranikanda Kamanpur (Village), Peddapalli (District), Telangana.

show abstract

Section: Principal Component Analysis (Pca)supporting

confidence: 86%

Genetic Diversity and Principal Component Analysis for Yield and Nutritional Traits in Rice (Oryza sativa L.)

Rao¹,

Roja²,

Rao³

2020

Int.J.Curr.Microbiol.App.Sci

View full text Add to dashboard Cite

show abstract

“…Reductions in grain yield (Asch and Wopereis 2001;Abdullah et al 2001;Zeng et al 2002;Kiani et al 2006;Motamed et al 2008;Rao et al 2008;Clermont-Dauphin et al 2010;Mojakkir et al 2015;Raghavendra et al 2018) are particularly influenced by the number of panicles (Asch and Wopereis 2001) and panicle length (Abdullah et al 2001;Motamed et al 2008;Mojakkir et al 2015). Within-panicle characteristics affected by salinity include:…”

Section: Effects Of Salinity At the Reproductive Stage: Effects On Yield And Yield Componentsmentioning

confidence: 99%

Salt tolerance in rice: seedling and reproductive stage QTL mapping come of age

2021

View full text Add to dashboard Cite

Key message Reproductive stage salinity tolerance is most critical for rice as it determines the yield under stress. Few studies have been undertaken for this trait as phenotyping was cumbersome, but new methodology outlined in this review seeks to redress this deficiency. Sixty-three meta-QTLs, the most important genomic regions to target for enhancing salinity tolerance, are reported. Abstract Although rice has been categorized as a salt-sensitive crop, it is not equally affected throughout its growth, being most sensitive at the seedling and reproductive stages. However, a very poor correlation exists between sensitivity at these two stages, which suggests that the effects of salt are determined by different mechanisms and sets of genes (QTLs) in seedlings and during flowering. Although tolerance at the reproductive stage is arguably the more important, as it translates directly into grain yield, more than 90% of publications on the effects of salinity on rice are limited to the seedling stage. Only a few studies have been conducted on tolerance at the reproductive stage, as phenotyping is cumbersome. In this review, we list the varieties of rice released for salinity tolerance traits, those being commercially cultivated in salt-affected soils and summarize phenotyping methodologies. Since further increases in tolerance are needed to maintain future productivity, we highlight work on phenotyping for salinity tolerance at the reproductive stage. We have constructed an exhaustive list of the 935 reported QTLs for salinity tolerance in rice at the seedling and reproductive stages. We illustrate the chromosome locations of 63 meta-QTLs (with 95% confidence interval) that indicate the most important genomic regions for salt tolerance in rice. Further study of these QTLs should enhance our understanding of salt tolerance in rice and, if targeted, will have the highest probability of success for marker-assisted selections.

show abstract

“…Initially, attempts were made to understand the genetic basis of salt tolerance in legume and cereal crops [ 62 , 63 , 64 , 65 , 66 , 67 ]. Genetic and biostatistical studies on rice identified a few dominant genes governing salt tolerance in rice, and subsequent studies revealed the polygenic nature of the trait, involving both additive and non-additive gene actions [ 61 , 68 , 69 , 70 , 71 ]. Further studies found out that crop plants respond differently to salt stress in a growth stage-specific manner, making it more complex to understand the phenomenon.…”

Section: The Genetic Basis Of Tolerance To Salinity In Plantsmentioning

confidence: 99%

Genetic, Epigenetic, Genomic and Microbial Approaches to Enhance Salt Tolerance of Plants: A Comprehensive Review

Saradadevi

Das

Mangrauthia

et al. 2021

Biology

View full text Add to dashboard Cite

Globally, soil salinity has been on the rise owing to various factors that are both human and environmental. The abiotic stress caused by soil salinity has become one of the most damaging abiotic stresses faced by crop plants, resulting in significant yield losses. Salt stress induces physiological and morphological modifications in plants as a result of significant changes in gene expression patterns and signal transduction cascades. In this comprehensive review, with a major focus on recent advances in the field of plant molecular biology, we discuss several approaches to enhance salinity tolerance in plants comprising various classical and advanced genetic and genetic engineering approaches, genomics and genome editing technologies, and plant growth-promoting rhizobacteria (PGPR)-based approaches. Furthermore, based on recent advances in the field of epigenetics, we propose novel approaches to create and exploit heritable genome-wide epigenetic variation in crop plants to enhance salinity tolerance. Specifically, we describe the concepts and the underlying principles of epigenetic recombinant inbred lines (epiRILs) and other epigenetic variants and methods to generate them. The proposed epigenetic approaches also have the potential to create additional genetic variation by modulating meiotic crossover frequency.

show abstract

Exploration of Genetic Diversity in Traditional Landraces of Rice for Yield and Its Attributing Traits under Saline Stress Condition

Cited by 3 publications

References 6 publications

Genetic Diversity and Principal Component Analysis for Yield and Nutritional Traits in Rice (Oryza sativa L.)

Genetic Diversity and Principal Component Analysis for Yield and Nutritional Traits in Rice (Oryza sativa L.)

Salt tolerance in rice: seedling and reproductive stage QTL mapping come of age

Genetic, Epigenetic, Genomic and Microbial Approaches to Enhance Salt Tolerance of Plants: A Comprehensive Review

Contact Info

Product

Resources

About