Genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (Vigna unguiculata) seeds.
Cowpea crop, through combining a range of essential minerals with high quality proteins, plays an important role in providing nutritional security to human population living in semi-arid regions. Studies on genetics of biofortification with essential minerals are still quite scarce, and the major objective of the present study was to provide genetic information on development of cowpea cultivars with high seed mineral contents. Genetic parameters heritability and minimum number of genes were estimated for seed accumulation of zinc (Zn), iron (Fe), calcium (Ca), phosphorus (P), potassium (K), and sodium (Na). Generation mean and variance analyses were conducted using contrasting parental lines, F1, F2, and backcross populations derived from IT97K-1042-3 x BRS Tapaihum and IT97K-1042-3 x Canapu crosses. High narrow-sense heritability (h2) values were found for accumulation of Fe (65-86%), P (74-77%), and K (77-88%), whereas moderate h2 values were observed for accumulation of Ca (41-56%), Zn (51-83%), and Na (50-55%) in seeds. Significant additive genetic effects as well whereas epistasis was important genetic component in Zn content. The minimum number of genes controlling the accumulation of minerals ranged from two (K) to 11 (P). Transgressive segregation was observed in F2 populations of both crosses for all minerals analyzed. The results suggest that, although under either oligogenic or polygenic control, the seed content of these six minerals in cowpea can be improved via standard breeding methods largely used for self-pollinated crops.
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Format: | Artigo de periódico biblioteca |
Language: | English eng |
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2015-12-01
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Subjects: | Feijão caupi, Melhoramento genético, Variance analyses., Generation mean analyses, Semente, Vigna Unguiculata., Genetic improvement, Minerals., |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1030173 |
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dig-alice-doc-10301732018-01-12T23:14:07Z Genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (Vigna unguiculata) seeds. SANTOS, C. A. F. BOITEUX, L. S. CARLOS ANTONIO FERNANDES SANTOS, CPATSA; LEONARDO SILVA BOITEUX, CNPH. Feijão caupi Melhoramento genético Variance analyses. Generation mean analyses Semente Vigna Unguiculata. Genetic improvement Minerals. Cowpea crop, through combining a range of essential minerals with high quality proteins, plays an important role in providing nutritional security to human population living in semi-arid regions. Studies on genetics of biofortification with essential minerals are still quite scarce, and the major objective of the present study was to provide genetic information on development of cowpea cultivars with high seed mineral contents. Genetic parameters heritability and minimum number of genes were estimated for seed accumulation of zinc (Zn), iron (Fe), calcium (Ca), phosphorus (P), potassium (K), and sodium (Na). Generation mean and variance analyses were conducted using contrasting parental lines, F1, F2, and backcross populations derived from IT97K-1042-3 x BRS Tapaihum and IT97K-1042-3 x Canapu crosses. High narrow-sense heritability (h2) values were found for accumulation of Fe (65-86%), P (74-77%), and K (77-88%), whereas moderate h2 values were observed for accumulation of Ca (41-56%), Zn (51-83%), and Na (50-55%) in seeds. Significant additive genetic effects as well whereas epistasis was important genetic component in Zn content. The minimum number of genes controlling the accumulation of minerals ranged from two (K) to 11 (P). Transgressive segregation was observed in F2 populations of both crosses for all minerals analyzed. The results suggest that, although under either oligogenic or polygenic control, the seed content of these six minerals in cowpea can be improved via standard breeding methods largely used for self-pollinated crops. 2018-01-12T23:14:00Z 2018-01-12T23:14:00Z 2015-12-01 2015 2018-01-12T23:14:00Z Artigo de periódico Genetics and Molecular Research, v. 14, n. 1, p. 259-268, Jan. 2015. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1030173 10.4238/2015.January.16.10. en eng openAccess |
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Feijão caupi Melhoramento genético Variance analyses. Generation mean analyses Semente Vigna Unguiculata. Genetic improvement Minerals. Feijão caupi Melhoramento genético Variance analyses. Generation mean analyses Semente Vigna Unguiculata. Genetic improvement Minerals. |
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Feijão caupi Melhoramento genético Variance analyses. Generation mean analyses Semente Vigna Unguiculata. Genetic improvement Minerals. Feijão caupi Melhoramento genético Variance analyses. Generation mean analyses Semente Vigna Unguiculata. Genetic improvement Minerals. SANTOS, C. A. F. BOITEUX, L. S. Genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (Vigna unguiculata) seeds. |
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Cowpea crop, through combining a range of essential minerals with high quality proteins, plays an important role in providing nutritional security to human population living in semi-arid regions. Studies on genetics of biofortification with essential minerals are still quite scarce, and the major objective of the present study was to provide genetic information on development of cowpea cultivars with high seed mineral contents. Genetic parameters heritability and minimum number of genes were estimated for seed accumulation of zinc (Zn), iron (Fe), calcium (Ca), phosphorus (P), potassium (K), and sodium (Na). Generation mean and variance analyses were conducted using contrasting parental lines, F1, F2, and backcross populations derived from IT97K-1042-3 x BRS Tapaihum and IT97K-1042-3 x Canapu crosses. High narrow-sense heritability (h2) values were found for accumulation of Fe (65-86%), P (74-77%), and K (77-88%), whereas moderate h2 values were observed for accumulation of Ca (41-56%), Zn (51-83%), and Na (50-55%) in seeds. Significant additive genetic effects as well whereas epistasis was important genetic component in Zn content. The minimum number of genes controlling the accumulation of minerals ranged from two (K) to 11 (P). Transgressive segregation was observed in F2 populations of both crosses for all minerals analyzed. The results suggest that, although under either oligogenic or polygenic control, the seed content of these six minerals in cowpea can be improved via standard breeding methods largely used for self-pollinated crops. |
author2 |
CARLOS ANTONIO FERNANDES SANTOS, CPATSA; LEONARDO SILVA BOITEUX, CNPH. |
author_facet |
CARLOS ANTONIO FERNANDES SANTOS, CPATSA; LEONARDO SILVA BOITEUX, CNPH. SANTOS, C. A. F. BOITEUX, L. S. |
format |
Artigo de periódico |
topic_facet |
Feijão caupi Melhoramento genético Variance analyses. Generation mean analyses Semente Vigna Unguiculata. Genetic improvement Minerals. |
author |
SANTOS, C. A. F. BOITEUX, L. S. |
author_sort |
SANTOS, C. A. F. |
title |
Genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (Vigna unguiculata) seeds. |
title_short |
Genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (Vigna unguiculata) seeds. |
title_full |
Genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (Vigna unguiculata) seeds. |
title_fullStr |
Genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (Vigna unguiculata) seeds. |
title_full_unstemmed |
Genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (Vigna unguiculata) seeds. |
title_sort |
genetic control and transgressive segregation of zinc, iron, potassium, phosphorus, calcium, and sodium accumulation in cowpea (vigna unguiculata) seeds. |
publishDate |
2015-12-01 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1030173 |
work_keys_str_mv |
AT santoscaf geneticcontrolandtransgressivesegregationofzincironpotassiumphosphoruscalciumandsodiumaccumulationincowpeavignaunguiculataseeds AT boiteuxls geneticcontrolandtransgressivesegregationofzincironpotassiumphosphoruscalciumandsodiumaccumulationincowpeavignaunguiculataseeds |
_version_ |
1756024257548124160 |