Phenotypic and molecular characterization of rice germplasm lines and identification of novel source for low soil phosphorus tolerance in rice

Phosphorus (P) is an essential macro-nutrient required for growth and development of all crop plants including rice. Low availability of P in the soils manifests in terms of impeding crop growth leading to yield losses in rice. Adequate genetic variability for low soil P tolerance and also P use eff...

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Veröffentlicht in:Euphytica 2019-07, Vol.215 (7), p.1-15, Article 118
Hauptverfasser: Swamy, H. K. Mahadeva, Anila, M., Kale, Ravindra R., Bhadana, V. P., Anantha, M. S., Brajendra, P., Hajira, S. K., Balachiranjeevi, C. H., Prasanna, B. Laxmi, Pranathi, K., Dilip, T., Bhaskar, S., Kumar, V. Abhilash, Kousik, M. B. V. N., Harika, G., Swapnil, K., Rekha, G., Cheralu, C., Shankar, V. Gouri, Reddy, S. Narendra, Kumar, Sudhir, Balachandran, S. M., Madhav, M. S., Kumar, R. Mahendra, Sundaram, R. M.
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container_title Euphytica
container_volume 215
creator Swamy, H. K. Mahadeva
Anila, M.
Kale, Ravindra R.
Bhadana, V. P.
Anantha, M. S.
Brajendra, P.
Hajira, S. K.
Balachiranjeevi, C. H.
Prasanna, B. Laxmi
Pranathi, K.
Dilip, T.
Bhaskar, S.
Kumar, V. Abhilash
Kousik, M. B. V. N.
Harika, G.
Swapnil, K.
Rekha, G.
Cheralu, C.
Shankar, V. Gouri
Reddy, S. Narendra
Kumar, Sudhir
Balachandran, S. M.
Madhav, M. S.
Kumar, R. Mahendra
Sundaram, R. M.
description Phosphorus (P) is an essential macro-nutrient required for growth and development of all crop plants including rice. Low availability of P in the soils manifests in terms of impeding crop growth leading to yield losses in rice. Adequate genetic variability for low soil P tolerance and also P use efficiency has been documented in rice and a major QTL called Pup1 , conferring tolerance to low soil P has been identified, characterized and cloned from an Indian landrace, Kasalath. In the present study, a set of 98 germplasm lines collected from North-Eastern part of India were characterized for low soil P tolerance by screening them in a plot with low soil P (with available P  20 kg ha −1 ). The rice lines showed significantly high genetic variability for low soil P tolerance associated traits. Stress indices were estimated based on yield under normal and low soil P conditions and cluster analysis based on the stress indices; yield under normal and low soil P condition grouped the genotypes into highly tolerant, tolerant and sensitive to low soil P. Among the rice lines, 18 showed tolerance to low soil P (i.e. yield reduction 
doi_str_mv 10.1007/s10681-019-2443-0
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K. Mahadeva ; Anila, M. ; Kale, Ravindra R. ; Bhadana, V. P. ; Anantha, M. S. ; Brajendra, P. ; Hajira, S. K. ; Balachiranjeevi, C. H. ; Prasanna, B. Laxmi ; Pranathi, K. ; Dilip, T. ; Bhaskar, S. ; Kumar, V. Abhilash ; Kousik, M. B. V. N. ; Harika, G. ; Swapnil, K. ; Rekha, G. ; Cheralu, C. ; Shankar, V. Gouri ; Reddy, S. Narendra ; Kumar, Sudhir ; Balachandran, S. M. ; Madhav, M. S. ; Kumar, R. Mahendra ; Sundaram, R. M.</creator><creatorcontrib>Swamy, H. K. Mahadeva ; Anila, M. ; Kale, Ravindra R. ; Bhadana, V. P. ; Anantha, M. S. ; Brajendra, P. ; Hajira, S. K. ; Balachiranjeevi, C. H. ; Prasanna, B. Laxmi ; Pranathi, K. ; Dilip, T. ; Bhaskar, S. ; Kumar, V. Abhilash ; Kousik, M. B. V. N. ; Harika, G. ; Swapnil, K. ; Rekha, G. ; Cheralu, C. ; Shankar, V. Gouri ; Reddy, S. Narendra ; Kumar, Sudhir ; Balachandran, S. M. ; Madhav, M. S. ; Kumar, R. Mahendra ; Sundaram, R. 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In the present study, a set of 98 germplasm lines collected from North-Eastern part of India were characterized for low soil P tolerance by screening them in a plot with low soil P (with available P &lt; 2.0 kg ha −1 ) and also a plot with normal soil P (available P &gt; 20 kg ha −1 ). The rice lines showed significantly high genetic variability for low soil P tolerance associated traits. Stress indices were estimated based on yield under normal and low soil P conditions and cluster analysis based on the stress indices; yield under normal and low soil P condition grouped the genotypes into highly tolerant, tolerant and sensitive to low soil P. Among the rice lines, 18 showed tolerance to low soil P (i.e. yield reduction &lt; 70% in low soil P condition). The genotypic analysis based on Pup1 associated molecular markers revealed the presence of complete or partial Pup1 genomic region in most of the germplasm lines. 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subjects Agricultural production
Analysis
Biomedical and Life Sciences
Biotechnology
Cereal crops
Cluster analysis
Crop growth
Genetic variability
Genotypes
Germplasm
Life Sciences
Oryza
Phosphorus
Phosphorus content
Plant Genetics and Genomics
Plant Pathology
Plant Physiology
Plant Sciences
Quantitative genetics
Quantitative trait loci
Rice
Soil conditions
Soils
title Phenotypic and molecular characterization of rice germplasm lines and identification of novel source for low soil phosphorus tolerance in rice
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