Drought susceptibility of modern rice varieties: an effect of linkage of drought tolerance with undesirable traits
Green Revolution (GR) rice varieties are high yielding but typically drought sensitive. This is partly due to the tight linkage between the loci governing plant height and drought tolerance. This linkage is illustrated here through characterization of qDTY1.1, a QTL for grain yield under drought that co-segregates with the GR gene sd1 for semi-dwarf plant height. We report that the loss of the qDTY1.1 allele during the GR was due to its tight linkage in repulsion with the sd1 allele. Other drought-yield QTLs (qDTY) also showed tight linkage with traits rejected in GR varieties. Genetic diversity analysis for 11 different qDTY regions grouped GR varieties separately from traditional drought-tolerant varieties, and showed lower frequency of drought tolerance alleles. The increased understanding and breaking of the linkage between drought tolerance and undesirable traits has led to the development of high-yielding drought-tolerant dwarf lines with positive qDTY alleles and provides new hope for extending the benefits of the GR to drought-prone rice-growing regions.
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Language: | English |
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Nature Publishing
2015
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Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, Rice Varieties, Drought Sensitive, GREEN REVOLUTION, GENETICS, DROUGHT TOLERANCE, QUANTITATIVE TRAIT LOCI, ALLELES, CHROMOSOME MAPPING, GENETIC DIVERSITY, |
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dig-cimmyt-10883-197072023-12-14T19:56:42Z Drought susceptibility of modern rice varieties: an effect of linkage of drought tolerance with undesirable traits Vikram, P. Mallikarjuna Swamy, B.P. Dixit, S. Singh, R. Miro, B. Kohli, A. Henry, A. Singh, N.K. Arvind Kumar AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Rice Varieties Drought Sensitive GREEN REVOLUTION GENETICS DROUGHT TOLERANCE QUANTITATIVE TRAIT LOCI ALLELES CHROMOSOME MAPPING GENETIC DIVERSITY GENETIC DIVERSITY Green Revolution (GR) rice varieties are high yielding but typically drought sensitive. This is partly due to the tight linkage between the loci governing plant height and drought tolerance. This linkage is illustrated here through characterization of qDTY1.1, a QTL for grain yield under drought that co-segregates with the GR gene sd1 for semi-dwarf plant height. We report that the loss of the qDTY1.1 allele during the GR was due to its tight linkage in repulsion with the sd1 allele. Other drought-yield QTLs (qDTY) also showed tight linkage with traits rejected in GR varieties. Genetic diversity analysis for 11 different qDTY regions grouped GR varieties separately from traditional drought-tolerant varieties, and showed lower frequency of drought tolerance alleles. The increased understanding and breaking of the linkage between drought tolerance and undesirable traits has led to the development of high-yielding drought-tolerant dwarf lines with positive qDTY alleles and provides new hope for extending the benefits of the GR to drought-prone rice-growing regions. 2019-01-09T20:27:56Z 2019-01-09T20:27:56Z 2015 Article 2045-2322 https://hdl.handle.net/10883/19707 10.1038/srep14799 English https://www.nature.com/articles/srep14799#Sec28 CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose. Open Access PDF United Kingdom Nature Publishing 5 Scientific Reports 14799 |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Rice Varieties Drought Sensitive GREEN REVOLUTION GENETICS DROUGHT TOLERANCE QUANTITATIVE TRAIT LOCI ALLELES CHROMOSOME MAPPING GENETIC DIVERSITY GENETIC DIVERSITY AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Rice Varieties Drought Sensitive GREEN REVOLUTION GENETICS DROUGHT TOLERANCE QUANTITATIVE TRAIT LOCI ALLELES CHROMOSOME MAPPING GENETIC DIVERSITY GENETIC DIVERSITY |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Rice Varieties Drought Sensitive GREEN REVOLUTION GENETICS DROUGHT TOLERANCE QUANTITATIVE TRAIT LOCI ALLELES CHROMOSOME MAPPING GENETIC DIVERSITY GENETIC DIVERSITY AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Rice Varieties Drought Sensitive GREEN REVOLUTION GENETICS DROUGHT TOLERANCE QUANTITATIVE TRAIT LOCI ALLELES CHROMOSOME MAPPING GENETIC DIVERSITY GENETIC DIVERSITY Vikram, P. Mallikarjuna Swamy, B.P. Dixit, S. Singh, R. Miro, B. Kohli, A. Henry, A. Singh, N.K. Arvind Kumar Drought susceptibility of modern rice varieties: an effect of linkage of drought tolerance with undesirable traits |
description |
Green Revolution (GR) rice varieties are high yielding but typically drought sensitive. This is partly due to the tight linkage between the loci governing plant height and drought tolerance. This linkage is illustrated here through characterization of qDTY1.1, a QTL for grain yield under drought that co-segregates with the GR gene sd1 for semi-dwarf plant height. We report that the loss of the qDTY1.1 allele during the GR was due to its tight linkage in repulsion with the sd1 allele. Other drought-yield QTLs (qDTY) also showed tight linkage with traits rejected in GR varieties. Genetic diversity analysis for 11 different qDTY regions grouped GR varieties separately from traditional drought-tolerant varieties, and showed lower frequency of drought tolerance alleles. The increased understanding and breaking of the linkage between drought tolerance and undesirable traits has led to the development of high-yielding drought-tolerant dwarf lines with positive qDTY alleles and provides new hope for extending the benefits of the GR to drought-prone rice-growing regions. |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Rice Varieties Drought Sensitive GREEN REVOLUTION GENETICS DROUGHT TOLERANCE QUANTITATIVE TRAIT LOCI ALLELES CHROMOSOME MAPPING GENETIC DIVERSITY GENETIC DIVERSITY |
author |
Vikram, P. Mallikarjuna Swamy, B.P. Dixit, S. Singh, R. Miro, B. Kohli, A. Henry, A. Singh, N.K. Arvind Kumar |
author_facet |
Vikram, P. Mallikarjuna Swamy, B.P. Dixit, S. Singh, R. Miro, B. Kohli, A. Henry, A. Singh, N.K. Arvind Kumar |
author_sort |
Vikram, P. |
title |
Drought susceptibility of modern rice varieties: an effect of linkage of drought tolerance with undesirable traits |
title_short |
Drought susceptibility of modern rice varieties: an effect of linkage of drought tolerance with undesirable traits |
title_full |
Drought susceptibility of modern rice varieties: an effect of linkage of drought tolerance with undesirable traits |
title_fullStr |
Drought susceptibility of modern rice varieties: an effect of linkage of drought tolerance with undesirable traits |
title_full_unstemmed |
Drought susceptibility of modern rice varieties: an effect of linkage of drought tolerance with undesirable traits |
title_sort |
drought susceptibility of modern rice varieties: an effect of linkage of drought tolerance with undesirable traits |
publisher |
Nature Publishing |
publishDate |
2015 |
url |
https://hdl.handle.net/10883/19707 |
work_keys_str_mv |
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