Heterosis and genetic distance in intervarietal corn hybrids [PDF]
: The objective of this work was to evaluate the performance of intervarietal corn (Zea mays) hybrids with topcross crosses between landrace populations, and to confirm whether genetic dissimilarity between populations is correlated with the heterosis of
Diego Baretta +10 more
doaj +2 more sources
Combining ability of early-maturing varieties of soft spring wheat by grain weight from the ear [PDF]
With the participation of early-maturing varieties, a topcross scheme of crossings was performed (10×4); maternal varieties: Pamyati Azieva, Altayskaya 92, Obskaya 14, SURENTa-6, Adeline, SURENTa-3, Voronezhskaya 12, Tyumenskaya rannyaya, Tulun 15 ...
Novokhatan V.V. +2 more
doaj +1 more source
Melez mısır ıslahının en önemli safhalarından biri kendilenmiş hatların verim potansiyeli ve kombinasyon yeteneklerinin belirlenmesidir. Bu çalışma ile kendilenmiş atdişi mısır hatlarının tane verimi ve bazı agronomik özellikleri bakımından kombinasyon ...
Ahmet Yıldırım +2 more
doaj +1 more source
Selection of corn inbred lines, testers, and hybrids adapted to second-crop environments [PDF]
: The objective of this work was to evaluate the yield performance, adaptability, and stability of corn (Zea mays) topcross hybrids in nine environments in Brazil, in order to select inbred lines, testers, and promising hybrid combinations for these ...
Rodrigo Gomes +2 more
doaj +1 more source
Análise combinatória de populações de milho pipoca em topcrosses [PDF]
O objetivo deste estudo foi avaliar, por meio de topcrosses, o potencial heterótico de 14 populações de milho pipoca. No ano agrícola 1997/1998, foram obtidos os híbridos topcrosses resultantes dos cruzamentos das populações com o testador, que se constituiu da mistura eqüitativa de sementes de todas as 14 populações.
Seifert, Adilson Luiz +3 more
openaire +3 more sources
Combining ability of forage maize S3 progenies in topcrosses for traits of the vegetative part and whole plant [PDF]
The objective of this work was to evaluate the combining ability of S3 forage maize (Zea mays) progenies for traits related to forage yield and bromatological quality, with and without the ear, as well as to evaluate the ability of testers to ...
Elida Auxiliadora Peralta Paiva +7 more
doaj +1 more source
Physiological quality in seeds obtained by topcrosses between vegetable soybean and grain type
Attempts were made to study the gene introgression for high physiological quality from adapted cultivars in the vegetable soybean (exotic). Promising results were obtained for all topocrosses, with increased in germination percentage in majority. General
Gilberto K. Yokomizo, Natal A. Vello
doaj +1 more source
Topcross Testing for Broiler Production
Abstract LITTLE information is available in the literature concerning the combining ability of inbred lines and the performance of their topcrosses for broilers. Waters (1938) observed that inbred White Leghorn sires topcrossed on White Leghorn females produced offspring that were superior in hatchability and viability to random-bred Leghorns. Growth
E.W. Glazener, W.L. Blow
openaire +1 more source
Combinational ability of crossing components and heterosis of F1 hybrids of sugar sorghum by biomass yield [PDF]
Currently, the most promising direction of breeding is the creation of F1 hybrids of sugar sorghum, based on the identification and selection of parental forms with high combinational ability.
Kibalnik Oksana +3 more
doaj +1 more source
Registration of ICMR 501 Pearl Millet Topcross Pollinator Parental Line [PDF]
This pearl millet (Pennisetum glaucum) parental line (PI597491), released in 1996, was derived via random-mating 11 phenotypically similar inbred lines derived from Bold Seeded Early Composite (BSEC) and the ICRISAT 1989 Potential Restorer Line Trial via selection for resistance to downy mildew (Sclerospora graminicola) and early maturity.
Talukdar, B S +3 more
openaire +2 more sources

