The Utilization of Cytoplasmic Male Sterile (Cms) and Restorer Lines in the Developing of Hybrid Rice.

El–Hadi, A. H. Abd; Kash, Kawser S.; El-Mowafi, H. F.; Anis, Galal Bakr

doi:10.21608/jacb.2013.53208

Cited by 5 publications

(10 citation statements)

References 5 publications

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“…The contribution of line × tester interaction was important for spikelet fertility % (59.12%) only. These results are in agreement with those obtained by Abd El-Hadi et al (2013) and Hasan et al (2015).…”

Section: Estimates Of Genetic Parameterssupporting

confidence: 94%

“…The results revealed that the dominance genetic variance (σ 2 D) was greater than the additive genetic variance (σ 2 A) in controlled the inheritance of all the studied traits, except days to heading, plant height and panicle weight which was governed by the additive genetic variance. These results are in accordance with those of Abd El-Hadi et al (2013) and Anis (2013). Heritability estimates in broad sense (h 2 b %) were high for all the studied traits.…”

Section: Estimates Of Genetic Parameterssupporting

confidence: 93%

“…These results indicated that the non-additive gene effects played a major role in the genetic expression of these traits, while the inheritance of the excepted traits were chiefly controlled by additive gene effects (Table 3). These results are in general agreement with those previously reported by Satyanarayana et al (2000), Rita & Motiramani (2005), Venkatesan et al (2007), Dalvi & Patel (2009), Saidaiah et al (2010, Shyam et al (2012), Abd El-Hadi et al (2013) and Hasan et al (2015).…”

Section: Test Of Significancesupporting

confidence: 92%

“…It is obvious that none of the parents were found to be good general combiner for all studied traits, as the combining ability effects were not consistent for all the yield and yield contributing traits simultaneously. Similar findings were also reported b y Sarker (2001), Rosamma & Vijayakumar (2005), Petchiammal & Kumar (2007), Saleem et al (2010), Abd El-Hadi et al (2013 and Hasan et al (2015).…”

Section: General Combining Ability (Gca) Effectssupporting

confidence: 83%

“…Both additive and non-additive gene effects have been reported to be important in the genetic expression of many rice traits including grain yield (Rita &Motiramani, 2005 andEl-Degwy, 2013). However, the non-additive gene action was predominant for days to heading, number of panicles/ plant, panicle weight, panicle length and grain yield (Abd El-Hadi et al, 2013 andHasan et al, 2015). While, the additive gene action appeared to be more important in the genetic expression of rice grain yield and some of its contributing traits (Hassan et al, 2012).…”

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confidence: 99%

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Genetic Analysis of Some Quantitative Traits in Hybrid Rice with Utilizing Cytoplasmic Genetic Male Sterility System

2016

Egypt. J. Agron.

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HE PRESENT investigation was conducted to study the genetic variance components, heritability, heterosis and combining ability in relation to identifying desirable parents and hybrids for hybrid rice breeding program. Three cytoplasmic male sterile (CMS) lines and five restorers (testers) were crossed in line × tester scheme in 2014 growing season. The resulted 15 F 1 hybrids along with their eight parents, three maintainers lines and one standard check variety (Giza 178) were evaluated in a randomized complete block design (RCBD) with three replications at Rice Research and Training Center (RRTC) Farm, Sakha, Kafrelsheikh, Egypt during 2015 growing season. Data were recorded on eight quantitative traits, i.e. days to heading, plant height , panicle length, 1000-grain weight, panicle weight, the number of panicles/plant, spikelet fertility percentage and grain yield. The results showed that, the mean squares due to genotypes, parents, crosses and parents vs. crosses were highly significant for all the studied traits. Highly significant differences were detected among lines, testers and line × tester for all the studied traits. The nonadditive genetic variance played an effective role in the inheritance of all studied traits, except days to heading, plant height and panicle weight. Heritability estimates in the broad sense (h 2 b %) were high for all the studied traits. However, heritability estimates in the narrow sense (h 2 n %) were moderate to high for some traits. Relatively high genetic advance coupled with high heritability estimates were detected for panicle weight. Highly significant and positive estimates of heterosis over better parent and the check variety (Giza 178) were detected in all the F 1 hybrids for the grain yield trait. The CMS line G46A and the restorers GZ9399 and PR6 were the best general combiners for grain yield. The hybrid combinations viz., IR69625A × Giza179, IR69625A × PR5, IR70368A × GZ9399, IR70368A × WTR1 and G46A × PR5 had the best SCA effects for grain yield and some of its components.Rice (Oryza sativa L.) is the main food crop for over one-half of the world's human population (Yuan, 2014). Rice plays a significant role in Egypt strategy for sustaining the food self-sufficiency and for increasing the export. By the year T G. B. ANIS et al.

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Section: Estimates Of Genetic Parameterssupporting

confidence: 94%

Section: Estimates Of Genetic Parameterssupporting

confidence: 93%

Section: Test Of Significancesupporting

confidence: 92%

Section: General Combining Ability (Gca) Effectssupporting

confidence: 83%

mentioning

confidence: 99%

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Genetic Analysis of Some Quantitative Traits in Hybrid Rice with Utilizing Cytoplasmic Genetic Male Sterility System

2016

Egypt. J. Agron.

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Studies on Correlation and some Morphological, Yield and its Components Traits in some Rice Hybrids

Arafat

Negm

Elsharnobi

2022

Journal of Plant Production

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Fourteen rice hybrids were grown in the two successive seasons 2020 and 2021 in Kafr El-Sheikh, Egypt, at the Experimental Farm of Rice Research and Training Center to evaluate the presence of variation for investigated traits and to estimate correlations for the studied traits with the grain yield. Every analyzed trait revealed substantial variations between hybrids, indicating a wide range of genetic variability controlling the studied traits. Grain yield (t ha -1 ) and 100-grain weight attributes with IR69625A×GZ6296, IR58025A×GZ6296 and G46A×GZ6296 hybrids achieved the highest estimated values and the hybrids IR70368A×PR78 and Pusa13A×Giza181 in in the grain yield only. Five hybrids showed surpass over standard check variety, EHR1 for grain yield and some other traits. A strong positive correlation and regression was found between grain yield (t ha -1 ) and the following variables: panicle length, number of spikelets panicle -1 , harvest index and biological yield (t ha -1 ) and it can be dependent on these trait to select the best genotypes in breeding program to improve the grain yield.

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Identification of New High Yielding Indica-Japonica and Effective Restorer Variety for Different Cytoplasmic Male Sterile (Cms) Sources in Rice

Anis,

Elsherif,

Mazal

et al. 2024

Menoufia Journal of Plant Production

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The development and use of hybrid rice technology on a commercial scale may be an innovation to reduce the gap between rice production and demand to feed more than half of the world's population. Hybrid rice production is based on a combination of the cytoplasmic male sterile line (CMS) and the restored line through cross-pollination, thus identification of effective and strong restorer is an important part in this process. In the present study, the promising line GZ10848-1-2-2-1 (Giza 183) was screened using three different CMS sources (Wild Abortive, Gambiaca and Kalinga) to study the fertility restoration ability through a test-cross nursery. The results identified that GZ10848 behaved as a suitable and complete restorer variety in synchronization and some other traits for all the four CMS lines. Four strongly heterotic F 1 hybrid combinations along with the check variety were evaluated to yield and its component characters. The analysis of variance of hybrid crosses revealed that highly significant differences for all studied traits. The hybrid combinations IR69625A/GZ10848 and E2021A/GZ10848 were superior for most studied traits and have high yield advantage than check commercial hybrid. All crosses demonstrated highly significant and positive standard heterosis for grain yield with values ranged from 15.58% to 20.42%. The phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variation (GCV) for all studied traits. Broad-sense heritability estimates for studied characters ranged from 31.23 to 99.04%. Highly significant positive correlations coefficient observed between grain yield and each of grain thickness and grain width. According to findings, hybrid combinations produced from this R line showed better performance relative to check variety EHR1. These results demonstrate that GZ10848 line including five fertility restorer genes Rf3, Rf4, Rf5, Rf6 and Rf1 in addition high yielding and desirable traits. Identification of like this high yield restorer line can be used in hybrid and inbred rice breeding programs to develop new hybrid rice varieties on a commercial scale.

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The Utilization of Cytoplasmic Male Sterile (Cms) and Restorer Lines in the Developing of Hybrid Rice.

Cited by 5 publications

References 5 publications

Genetic Analysis of Some Quantitative Traits in Hybrid Rice with Utilizing Cytoplasmic Genetic Male Sterility System

Genetic Analysis of Some Quantitative Traits in Hybrid Rice with Utilizing Cytoplasmic Genetic Male Sterility System

Studies on Correlation and some Morphological, Yield and its Components Traits in some Rice Hybrids

Identification of New High Yielding Indica-Japonica and Effective Restorer Variety for Different Cytoplasmic Male Sterile (Cms) Sources in Rice

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