Breeding Maize (Zea mays L.) for Aluminum Tolerance through Heterosis and Combining Ability
Soil acidity, a major threat to food security in developing countries, can cause a staggering 71% decline in maize (Zea mays L.) production. Identifying the genetic basis of aluminum tolerance is crucial for developing improved varieties. This study investigated the heterosis and combining ability e...
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| Format: | Article |
| Language: | English |
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Wiley
2024-01-01
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| Series: | International Journal of Agronomy |
| Online Access: | http://dx.doi.org/10.1155/2024/9950925 |
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| author | Fekadu Asfawu Gomathi Nayagam Edossa Fikiru Girum Azmach |
| author_facet | Fekadu Asfawu Gomathi Nayagam Edossa Fikiru Girum Azmach |
| author_sort | Fekadu Asfawu |
| collection | DOAJ |
| description | Soil acidity, a major threat to food security in developing countries, can cause a staggering 71% decline in maize (Zea mays L.) production. Identifying the genetic basis of aluminum tolerance is crucial for developing improved varieties. This study investigated the heterosis and combining ability effects of selected maize inbred lines for aluminum tolerance to identify superior parents and families for further breeding advancements. Using a 7 × 7 half-diallel mating design, seven inbred lines of maize were crossed, each with varying levels of aluminum tolerance. Under controlled conditions with and without aluminum stress, parents and F1 hybrids were evaluated for traits related to aluminum tolerance. Our analysis revealed the significant role of both additive and nonadditive gene action in aluminum tolerance, highlighting specific parental lines and hybrid combinations with exceptional performance. For every trait under study, parental genotypes VL144091 and VL153179 showed positive and significant GCA effects, while parents VL143984, VL143893, KL154667, and VL1110532 had negative and significant GCA effects. These findings demonstrate the potential of utilizing heterosis and combining ability for breeding high-yielding, acid-tolerant maize cultivars, contributing to enhanced food security in regions affected by soil acidity. |
| format | Article |
| id | doaj-art-bfda4ef51ea043598ee453dd0d3c2ae6 |
| institution | Kabale University |
| issn | 1687-8167 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Agronomy |
| spelling | doaj-art-bfda4ef51ea043598ee453dd0d3c2ae62025-02-03T11:30:42ZengWileyInternational Journal of Agronomy1687-81672024-01-01202410.1155/2024/9950925Breeding Maize (Zea mays L.) for Aluminum Tolerance through Heterosis and Combining AbilityFekadu Asfawu0Gomathi Nayagam1Edossa Fikiru2Girum Azmach3Department of Plant SciencesDepartment of Plant SciencesDepartment of Plant SciencesEthio Agri-CEFT Agricultural and Agro Industry PLCSoil acidity, a major threat to food security in developing countries, can cause a staggering 71% decline in maize (Zea mays L.) production. Identifying the genetic basis of aluminum tolerance is crucial for developing improved varieties. This study investigated the heterosis and combining ability effects of selected maize inbred lines for aluminum tolerance to identify superior parents and families for further breeding advancements. Using a 7 × 7 half-diallel mating design, seven inbred lines of maize were crossed, each with varying levels of aluminum tolerance. Under controlled conditions with and without aluminum stress, parents and F1 hybrids were evaluated for traits related to aluminum tolerance. Our analysis revealed the significant role of both additive and nonadditive gene action in aluminum tolerance, highlighting specific parental lines and hybrid combinations with exceptional performance. For every trait under study, parental genotypes VL144091 and VL153179 showed positive and significant GCA effects, while parents VL143984, VL143893, KL154667, and VL1110532 had negative and significant GCA effects. These findings demonstrate the potential of utilizing heterosis and combining ability for breeding high-yielding, acid-tolerant maize cultivars, contributing to enhanced food security in regions affected by soil acidity.http://dx.doi.org/10.1155/2024/9950925 |
| spellingShingle | Fekadu Asfawu Gomathi Nayagam Edossa Fikiru Girum Azmach Breeding Maize (Zea mays L.) for Aluminum Tolerance through Heterosis and Combining Ability International Journal of Agronomy |
| title | Breeding Maize (Zea mays L.) for Aluminum Tolerance through Heterosis and Combining Ability |
| title_full | Breeding Maize (Zea mays L.) for Aluminum Tolerance through Heterosis and Combining Ability |
| title_fullStr | Breeding Maize (Zea mays L.) for Aluminum Tolerance through Heterosis and Combining Ability |
| title_full_unstemmed | Breeding Maize (Zea mays L.) for Aluminum Tolerance through Heterosis and Combining Ability |
| title_short | Breeding Maize (Zea mays L.) for Aluminum Tolerance through Heterosis and Combining Ability |
| title_sort | breeding maize zea mays l for aluminum tolerance through heterosis and combining ability |
| url | http://dx.doi.org/10.1155/2024/9950925 |
| work_keys_str_mv | AT fekaduasfawu breedingmaizezeamayslforaluminumtolerancethroughheterosisandcombiningability AT gomathinayagam breedingmaizezeamayslforaluminumtolerancethroughheterosisandcombiningability AT edossafikiru breedingmaizezeamayslforaluminumtolerancethroughheterosisandcombiningability AT girumazmach breedingmaizezeamayslforaluminumtolerancethroughheterosisandcombiningability |