Performance, heterosis and heritability in selected tropical maize single, double and three-way cross hybrids
A series of tropical maize hybrids, involving 10 single, four double and four three-way crosses were evaluated with their parental inbred lines and three control varieties, at Universiti Putra Malaysia, Serdang, Malaysia, in a randomized complete block design, with three replications. The objectives...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2002
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| Online Access: | http://psasir.upm.edu.my/id/eprint/112936/1/112936.pdf |
| _version_ | 1824452309333049344 |
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| author | Saleh, G.B. Abdullah, D. Anuar, A.R. |
| author_facet | Saleh, G.B. Abdullah, D. Anuar, A.R. |
| author_sort | Saleh, G.B. |
| collection | UPM |
| description | A series of tropical maize hybrids, involving 10 single, four double and four three-way crosses were evaluated with their parental inbred lines and three control varieties, at Universiti Putra Malaysia, Serdang, Malaysia, in a randomized complete block design, with three replications. The objectives were to identify hybrids superior for yield, yield components and other agronomic traits, to estimate heterosis revealed by the hybrids, and to estimate broad-sense heritability for important characters in the populations. The hybrids were found to vary highly for grain yield and most other traits measured. High estimates of heterosis were shown by grain yield, ear weight and grain weight per ear, moderate for plant and ear heights, shelling percentage, ear diameter, number of kernel rows per ear, number of kernels per ear row and 100-grain weight. The hybrids flowered and matured earlier than their respective inbred parents. Estimates of broad-sense heritability also varied with characters. Moderate heritability was shown for grain yield indicating a substantial amount of genetic variation in this population of hybrids. Low and negligible heritability for days to silking and 100-grain weight indicate that these traits were very much influenced by environmental factors. Based on the overall performance of the hybrids, the single cross, SC-2, the double cross, DC-11 and the three-way cross, TWC-15, were found to have high potential. No obvious differences were observed in performance among the three categories of hybrids, the single, double and three-way crosses. |
| first_indexed | 2025-02-19T02:48:28Z |
| format | Article |
| id | upm.eprints-112936 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2025-02-19T02:48:28Z |
| publishDate | 2002 |
| publisher | Cambridge University Press |
| record_format | dspace |
| spelling | upm.eprints-1129362025-01-27T07:01:20Z http://psasir.upm.edu.my/id/eprint/112936/ Performance, heterosis and heritability in selected tropical maize single, double and three-way cross hybrids Saleh, G.B. Abdullah, D. Anuar, A.R. A series of tropical maize hybrids, involving 10 single, four double and four three-way crosses were evaluated with their parental inbred lines and three control varieties, at Universiti Putra Malaysia, Serdang, Malaysia, in a randomized complete block design, with three replications. The objectives were to identify hybrids superior for yield, yield components and other agronomic traits, to estimate heterosis revealed by the hybrids, and to estimate broad-sense heritability for important characters in the populations. The hybrids were found to vary highly for grain yield and most other traits measured. High estimates of heterosis were shown by grain yield, ear weight and grain weight per ear, moderate for plant and ear heights, shelling percentage, ear diameter, number of kernel rows per ear, number of kernels per ear row and 100-grain weight. The hybrids flowered and matured earlier than their respective inbred parents. Estimates of broad-sense heritability also varied with characters. Moderate heritability was shown for grain yield indicating a substantial amount of genetic variation in this population of hybrids. Low and negligible heritability for days to silking and 100-grain weight indicate that these traits were very much influenced by environmental factors. Based on the overall performance of the hybrids, the single cross, SC-2, the double cross, DC-11 and the three-way cross, TWC-15, were found to have high potential. No obvious differences were observed in performance among the three categories of hybrids, the single, double and three-way crosses. Cambridge University Press 2002 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/112936/1/112936.pdf Saleh, G.B. and Abdullah, D. and Anuar, A.R. (2002) Performance, heterosis and heritability in selected tropical maize single, double and three-way cross hybrids. The Journal of Agricultural Science, 138 (1). pp. 21-28. ISSN 0021-8596; eISSN: 1469-5146 https://www.cambridge.org/core/journals/journal-of-agricultural-science/article/abs/performance-heterosis-and-heritability-in-selected-tropical-maize-single-double-and-threeway-cross-hybrids/B026984B8E6583B20AA8C80255AB37B0 10.1017/s0021859601001757 |
| spellingShingle | Saleh, G.B. Abdullah, D. Anuar, A.R. Performance, heterosis and heritability in selected tropical maize single, double and three-way cross hybrids |
| title | Performance, heterosis and heritability in selected
tropical maize single, double and three-way cross
hybrids |
| title_full | Performance, heterosis and heritability in selected
tropical maize single, double and three-way cross
hybrids |
| title_fullStr | Performance, heterosis and heritability in selected
tropical maize single, double and three-way cross
hybrids |
| title_full_unstemmed | Performance, heterosis and heritability in selected
tropical maize single, double and three-way cross
hybrids |
| title_short | Performance, heterosis and heritability in selected
tropical maize single, double and three-way cross
hybrids |
| title_sort | performance heterosis and heritability in selected tropical maize single double and three way cross hybrids |
| url | http://psasir.upm.edu.my/id/eprint/112936/1/112936.pdf |
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