Heterosis and combining ability in crosses between two groups of open-pollinated maize populations
| Autor: | Mendes, Udenys Cabral [UNESP], Filho, José Branco De Miranda, Oliveira, Aurilene Santos, Reis, Edésio Fialho Dos |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Universidade de São Paulo (USP), Instituto de Ciências Agrárias, Universidade Federal de Goiás (UFG) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1984-7033 |
| Popis: | Made available in DSpace on 2018-12-11T16:40:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-01-01. Added 1 bitstream(s) on 2019-10-09T18:28:28Z : No. of bitstreams: 1 S1984-70332015000400235.pdf: 396611 bytes, checksum: 7d17c7fa6cac172a128a5a782c01d11c (MD5) The rapid expansion of corn in Brazil indicates the need to explore new sources of germplasm. Thus, the wider use of local germplasm, and the introduction of exotic ones seem to be an advisable strategy to achieve higher levels of yield and adaptability. The objective of this work was to generate information about the potential of two groups of populations (NAP - exotic; HG - local) and their heterotic pattern in hybrid combinations for the synthesis of new populations. Populations and hybrids were evaluated in complete randomized block designs with four replications, in two locations, and three yield traits were studied (GY - grain yield, EY-ear yield, SW - specific weight). The basic strategy was the selection of one HG population as base for the incorporation of each exotic population. The expected yield gain of the best combinations varied from 1 to 22%. Average heterosis for grain yield was 34.5%. UNESP Campus Ilha Solteira Universidade de São Paulo Escola Superior de Agricultura Luiz de Queiroz Departamento de Genética, CP 83 Universidade Federal Uberlândia Instituto de Ciências Agrárias, CP 593 Universidade Federal de Goiás Regional Jataí Ciências Biológicas, CP 03 UNESP Campus Ilha Solteira |
| Databáze: | OpenAIRE |
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