Identification of Potential F&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; Hybrids in Maize Responsive to Water Deficient Condition

Wattoo, Fahad Masoud; Saleem, Muhammad Farrukh; Sajjad, Muhammad

doi:10.4236/ajps.2014.513208

Cited by 9 publications

(11 citation statements)

References 23 publications

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“…Both general (GCA) and specific (SCA) combining abilities mean squares were found to be highly significant for all studied traits, indicating the importance of both additive and non-additive genetic variances in determining the performance of these traits. These results are in line with those of Abdel- Moneam (2005), Abdel- Moneam et al, (2009), Sultan et al (2011), Attia et al (2013), Sultan et al (2013), Abdel- Moneam et al (2014) and Wattoo et al (2014).…”

Section: -Analysis Of Variancesupporting

confidence: 90%

“…Both general and specific combining ability variances were highly significant for almost all the characters, except anthesis-silking interval. Wattoo et al (2014) reported that highly significant mean squares due to general combining ability, specific combining ability and reciprocal effects were observed for all traits under both water regimes. Components of variation exhibited greater estimates for GCA variance (б 2 g) than SCA variance (б 2 s) for majority of the traits under both normal and stress conditions depicting the predominant role of additive genetic component.…”

Section: Introductionmentioning

confidence: 98%

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Estimation of Combining Ability and Heterosis for Some Maize Inbred Lines and Its Single Crosses

Attia

Sultan

Badawi

et al. 2015

Journal of Plant Production

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Two field experiments were conducted out during 2012 and 2013 seasons to estimate combining ability, heterosis for six inbred lines (Three American inbreds: P97, B73and Oh.43 and three Egyptian inbred lines: R39, Inb.1021 and Inb.1004) and its F1 crosses. The most important results obtained from this investigation can be summarized as follows:  The differences among means of parental inbreds and also among means of crosses were significant or highly significant for all studied traits.  Mean squares of crosses were highly significant for all studied traits, indicating wide range of genetic variability among the studied crosses and this is primary requirement for further computation.  Both general and specific combining abilities mean squares were found to be highly significant for all studied traits.  GCA/SCA variances ratios were found to be lower than unity for six traits i.e. time to tassel emergency, time to silk emergency, number of rows/ear, number of kernels/row, grain yield/plant and shelling percentage and higher than unity for plant height and 100-Kernel weigh.  Significant positive general combining ability (GCA) effects were found for most studied traits. The best combiners were P2 (P79) and P4 (Inb.1021) for earliness traits; P5 (Inb.1004) and P6 (Oh.43) for plant height; P5 (Inb.1004) for number of rows/ear; P1 (R39) for number of grains/row; P2 (P97), P3 (B73) and P4 (Inb.1021) for 100-grain weight; P1 (R39) for grain yield/plant; P1 (R39) and P2 (P97) for shelling percentage.  Significant positive specific combining ability (SCA) effects were found for most studied traits. The best cross combinations P3×P4 for number of rows/ear; P1×P5 for number of grains/row; P1×P3, P1×P6, P2×P3, P2×P5, P3×P5 and P4×P6 for 100-Grain weight; P1×P2, P1×P5, P2×P5, P3×P6 and P4×P5 for grain yield/plant; P1×P5, P3×P6 and P4×P5 for shelling percentage.  Results showed significant or highly significant heterosis over mid-parents and better parents for all studied traits. The best crosses over mid and better parents were (P1×P5) for number of rows/ear; (P1×P6) for number of grains/row; (P2×P5) for100-grain weight;(P1×P6)for grain yield and (P1×P4) for shelling percentage.  The study recommends using inbred line P3 (B73) and crosses P1×P2, P1×P3 and P3×P6 in breeding program of maize to improve the yield and its components where they recorded the highest value of the grain yield/plant and gave a better combining ability.

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Section: -Analysis Of Variancesupporting

confidence: 90%

Section: Introductionmentioning

confidence: 98%

Estimation of Combining Ability and Heterosis for Some Maize Inbred Lines and Its Single Crosses

Attia

Sultan

Badawi

et al. 2015

Journal of Plant Production

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“…For this reason, the analysis was performed with 8 parents. It was also decided not to use reciprocal hybrids because normally, there are no reciprocal effects for grain yield traits under well-irrigated [17,21] and water-stress conditions [11,22].…”

Section: Methodsmentioning

confidence: 99%

Combined Dominance and Additive Gene Effects in Trait Inheritance of Drought-Stressed and Full Irrigated Popcorn

et al. 2019

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To define breeding strategies, the understanding of trait inheritance is critical. The objective of this study was to determine the inheritance of popcorn under different water regimes. To this end, Hayman’s diallel methodology was used, with 8 parents and 28 hybrids. The experiment was carried out under well-watered conditions (WW) and water stress (WS). For popping expansion (PE) under both water regimes, the effects of complete dominance and greater importance of the components associated with the dominance effects were observed. In contrast, the number of dominant genes was zero and the determination coefficient in the narrow sense was >50%; additive effects were also present. For the number of grains per row (GR), ear length (EL), and grain yield (GY) under WS and WW conditions, the dominance effects were the most relevant, and the mean degree of dominance with overdominance effects and greatest relevance of the components associated with this effect were also observed. The same breeding methods can be applied under the studied WS and WW conditions. Exploiting heterosis for GY and related components is a promising way to adapt popcorn to WS. To be able to capitalize on additive and dominance effects, a reciprocal recurrent selection is recommended.

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“…Aminu et al (2014), Okasha, et al (2014), Umar et al (2014) and Al-Naggar et al (2016) revealed that both additive and non-additive gene actions were responsible for the control of grain yield under water stress and non-stress conditions, but the magnitude of dominance was much higher than additive variance for this trait. On the other hand, additive and additive × additive types of gene action were greater importance in the inheritance of number of rows/ear (Al-Naggar et al, 2016); plant height, days to 50% silking, anthesis-silking interval (ASI), grain yield and 100-Kernel weight (Wattoo et al 2014).…”

Section: Analysis Of Variancementioning

confidence: 99%

“…If both GCA and SCA variances are non-significant indicate that epistatic gene effects play role for studying characters. Various studies have been made on combining ability under drought stress in maize viz EL-Hosary et al (2013) Alamerew and Warsi (2014), Aminu et al (2014), Okasha et al (2014), Umar et al (2014), Wattoo et al (2014), Erdal et al (2015), Al-Naggar el al. (2016), Matin et al (2016), andSaif-ul-Malook et al (2016).…”

Section: Introductionmentioning

confidence: 99%

Estimation of Some Breeding Parameters for Improvement Grain Yield in Yellow Maize under Water Stress

Ali

2016

Journal of Plant Production

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The present study was carried out during the three growing seasons 2011, 2012 and 2013 at Experimental Farm, Fac. of Agric., Zagazig University. A half diallel crosses among eight yellow maize inbred lines i.e. Z12 (P1), Z15 (P2), Z167 (P3), Z147 (P4), Z40 (P5), Z56 (P6), Z58 (P7) and Z103 (P8) were evaluated under well-watered and water stress environments. The data were recorded for the days to 50% silking, anthesis silking interval, plant height, ear leaf area, leaf water content, ear diameter, ear length, number of rows per ear, number of kernels per row, 100-kernel weight, grain yield (ard./fad.). The combined analyses of variance for combining ability revealed that mean squares for general combining ability (GCA) and specific combining ability (SCA) were highly significant across two environments for all studied characters, indicating the prevalence of additive and non-additive gene action in the gene expression of these characters, but the ratio of GCA/SCA variances were more than unity for days to 50% silking, plant height and number of rows per ear, indicating the major role of additive gene effects in controlling the genetic mechanism of these characters over water environments. In contrast, the ratio of variance GCA to variance SCA was blow one for anthesis silking interval, ear leaf area, leaf relative water content, ear diameter, ear length, number of rows per ear, number of kernels per row, 100-kernel weight and grain yield. This emphasized that, non-additive gene action was the prevailed type in controlling these characters. Narrow sense heritability estimates were high (> 50%) for days to 50% silking, plant height, ear diameter and number of rows per ear, moderate for ear leaf area (41.68%) and ear length (45.55%), and low (< 30%) for anthesis silking interval, leaf relative water content, number of kernels / row, 100-kernel weight and grain yield over two environments. Reduction % due to water stress valued, (32.83%) for grain yield (ard./fad.), (15.60%) for plant height, (14.99%) for ear length, (13.99%) for ear leaf area, (12.17%) for 100-kernel weight, (10.63%) for number of kernels/row, (6.98%) for ear diameter, (6.64%) for leaf relative water content and (4.22%) for number of rows/ear. The best parental combiners were Z167(P3) and Z147(P4) for grain yield and most its components under optimum irrigation and water deficit. The crosses, (P3 x P6), (P2 x P3), (P4 x P7), (P4 x P8) and (P6 x P8) had the most desirable and highest values for mean performance, SCA effects, heterosis effects, droght toleranc index (DI) and stress tolerance index (STI) for grain yield, anthesis silking interval and other performance traits. The yellow maize crosses (P2 x P3) and (P4 x P8) were significantly outyieled the check varieties. Grain yield had positive and significant genotypic and phenotypic correlations with ear leaf area (0.443** and 0.355**), leaf relative water content (0.488** and 0.307**), ear diameter (0.691** and 0.546**), ear length (0.783** and 0.647**), number of rows per ear (0.291* and 0.237),...

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Identification of Potential F<sub>1</sub> Hybrids in Maize Responsive to Water Deficient Condition

Cited by 9 publications

References 23 publications

Estimation of Combining Ability and Heterosis for Some Maize Inbred Lines and Its Single Crosses

Estimation of Combining Ability and Heterosis for Some Maize Inbred Lines and Its Single Crosses

Combined Dominance and Additive Gene Effects in Trait Inheritance of Drought-Stressed and Full Irrigated Popcorn

Estimation of Some Breeding Parameters for Improvement Grain Yield in Yellow Maize under Water Stress

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