Heterosis and Combining Ability in Hybrids of Teosinte

El–Adl, A. M.; Habiba, Rehab; Sakr, H. O.

doi:10.21608/jacb.2018.36314

Cited by 1 publication

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“…The cross P2 x P5 exhibited positive and highly significant heterosis for number of tillers per plant (81.2 %), plant height (61.6 %), number of leaves per plant (90.7 %), total leaf chlorophyll (9.3 %). These results were agreement with these obtained by Sakr and Ghazy (2010), Ghazy (2016) and El-Adl et al, (2018).…”

Section: Heterosissupporting

confidence: 94%

“…For fifth leaf area and dry fodder yield per plant, the additive gene effects play the major role in its inheritance of these traits. Similar results were reported by El-Adl et al, (2018), Ahmed et al, (2020) and Rathod et al, (2021). While, these result are disagreement with the results obtained by Ghazy (2016), who found that the nonadditive variance played the major role in the inheritance of the all studied traits in maize -teosinte hybrids.…”

Section: Specific Combining Ability Effects (Sca)supporting

confidence: 90%

“…The most height crosses that showed high SCA effects had one or two good combiner parent. These results are in harmony with those obtained by Sakr and Ghazy (2010), Abdel-Aty et al, (2013) and El-Adl et al, (2018). The values of specific combining ability effects (SCA) for all forage quality traits obtained from combined data and results are shown in Table 11.…”

Section: Specific Combining Ability Effects (Sca)supporting

confidence: 86%

“…In the case of tasseling date and silking date, the cross P1 x P5 is considered the best combination. These results agree with Sakr and Ghazy (2010), Ghazy (2016) and El-Adl et al, (2018). The estimated amounts of heterosis relative to midparent (M.P %) and better parent (B.P %) were determined for the forage quality traits over two years and obtained results are shown in Table 7.…”

Section: Heterosissupporting

confidence: 85%

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Heterosis, Combining Ability and Gene Action, for Yield and Yield Component Traits in Maize-Teosinte Hybrids

Habiba

Khaled

Sakr

et al. 2021

Journal of Agricultural Chemistry and Biotechnology

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Six hybrids were obtained from three male parents of teosinte and two commercial hybrids from maize as female parents, using factorial mating design in the season of 2018. In the two seasons of 2019 and 2020, the five parents and their six F1 hybrids were evaluated in Randomized Complete Block Design with three replicates. The results showed that the mean squares due to genotypes and their partitions to parents, crosses and their interactions with years; G x Y, P x Y and C x Y were highly significant for all the studied traits except stem diameter for G x Y and P x Y and silking date for C x Y. Crosses were found to be higher than parents in mean performance for most studied traits. The cross P2 x P5 exhibited positive and highly significant heterosis relative to mid-parent for number of tillers per plant (81.2%), plant height (61.6), number of leaves per plant (90.7) and total leaf chlorophyll (9.3%). This cross P2 x P5 had the best desirable SCA effects for number of tillers per plant, number of leaves per plant, green fodder yield per plant, crude protein and total digestible nutrients. The magnitudes of non-additive genetic variance were larger than their corresponding estimates of additive genetic variance with respect to all studied traits except for fifth leaf area, dry fodder yield per plant, crude protein and total digestible nutrients. The results illustrated that the heritability value in broad sense were ranged from 11.01 % for stem diameter to 97.23 % for fifth leaf area.

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Section: Heterosissupporting

confidence: 94%

Section: Specific Combining Ability Effects (Sca)supporting

confidence: 90%