Heterosis in Cotton

Roupakias, D. G.; Gouli-Vavdinoudi, E.; Koutsika-Sotiriou, M.; Galanopoulou-Sendouca, Stella; Mavromatis, A. S.

doi:10.1007/978-3-642-80373-4_9

Cited by 5 publications

(2 citation statements)

References 92 publications

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“…As the modernisation of these countries progresses and the labour/land ratio decreases, hybrid rice production is anticipated to become economically less feasible even there. A similar situation has been observed in cotton hybrid seed production (Davis 1978;Roupakias et al 1998).…”

Section: Selectedsupporting

confidence: 82%

Rice F1 hybrids: the breeding goal or a costly solution?

Ntanos¹,

Roupakias²

2003

Aust. J. Agric. Res.

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Whether to develop inbred cultivars or F1 hybrids is a dilemma faced by many rice (Oryza sativa L.) breeders. This could be partially answered if one could select superior recombinant inbred lines with an equal yielding ability and good quality traits from commercial F1 hybrids. Thus, it was attempted in this study to select superior inbred lines from 2 commercial F1 hybrids after application of honeycomb selection and panicle-to-row selection. The 2 F2 populations were advanced to F6 generation by both methods and, finally, 5 F5:6 lines with high yield potential and good grain quality were selected from each population and selection method and were tested in a randomised complete block design for 2 years in Kalochori, Thessaloniki, Greece. In each case the respective F1 hybrid and the check cultivar Strymonas were used as checks. Fourteen of the 20 lines selected by honeycomb selection and panicle-to-row selection from both populations exhibited a yielding ability that was not significantly different from the yield of the F1 hybrids in both years. Three of them, however, in 1 of the 2 years, had a significantly higher grain yield than the corresponding F1 hybrid. In addition, 6 of the above lines exhibited significantly higher values for more than 1 of the 4 quality traits (total milling yield, grain vitreosity, grain length, and grain length/width ratio) and they were not inferior for the remaining ones. It was concluded that application of combined selection for yield and quality could lead to the isolation of recombinant inbred lines with equal yielding ability and quality equal to or higher than the F1 hybrids. This, together with the higher cost associated with hybrid technology, indicates that the long-term goal of a rice-breeding program should be the production of superior inbred lines, unless hybrid production cost is low and quality is not critical for the particular market.

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Section: Selectedsupporting

confidence: 82%

Rice F1 hybrids: the breeding goal or a costly solution?

Ntanos¹,

Roupakias²

2003

Aust. J. Agric. Res.

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“…It was recognized that the two species cross easily and produce vigorous F 1 hybrids (Loden and Richmind, 1915). Useful heterosis in interspecific F 1 hybrids which combined productivity and quality has been reported by many researcher (Davis and Palomo 1980, Roupakias et al 1998, Galanopoulou-Sendouca and Roupakias, 1999Zhang and Wang, 2005). DNA based molecular markers acted as a versatile tool to study variability and diversity in different plant species.…”

Section: Correlation Between Genetic Distance and Hybrid Performance mentioning

confidence: 93%

Relationship between SSR- Based Molecular Marker and Cotton F<SUB>1</SUB> Inter Specific Hybrids Performance for Seed Cotton Yield and Fiber Properties

Yanal¹

2013

gab

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Knowledge of genetic diversity and relationships among breeding materials has a significant impact on crop improvement.Association between parental divergence and progeny performance has not been well documented in cotton (Gossypium hirsutum L.). The objectives of this study were to estimate genetic diversity among selected cotton genotypes on the basis of simple sequence repeat (SSR) markers, and to investigate the relationship between genetic diversity and F 1 population performance and heterosis.The present study was conducted to investigate the relationship between parents molecular marker diversity and interspecific hybrids of cotton to evaluate the hybrid performance and heterosis using molecular markers. Twenty eight F 4 lines of (Gossypium barbadense L.) were crossed with the four common diverse testers (Gossypium hirsutum L.) viz., DH 98-27 (T 1 ), ZCH8 (T 2 ), 178-24 (T 3 ) and DH 18-31 (T 4 ) to produce 112 F 1 inter specific hybrids during 2010. These 112 F 1 hybrids, their F 5 barbadense lines with 4 hirsutum testers and ruling commercial check (MRC6918 and DCH32) were evaluated for yield and fiber quality traits and sown during kharif 2011 at University of Agricultural Sciences, Dharwad, India. Genetic distances (GD) among the parents were calculated from 40 microsatellite marker data, and their correlation with hybrid performance and heterosis were analysed. The dendrogram constructed from the pooled data revealed three distinct clusters. One cluster involved testers and other clusters showed all lines were placed which are already having proven record in giving good hybrids. The similarity coefficient values between the line DB 533 × DB 534 F 4 IPS 49 and the tester DH 98-27 showed 67%. It revealed that DB 533 × DB 534 F 4 IPS 49 was closely related to DH 98-27 with 67% similarity between parents. The hybrid between DB 533 x DB 534 F 4 IPS 49 and DH 98-27 exhibited the highest yield of 2884.26 kg/ha. Similarity coefficient (88%) value between lines and testers showed between the line DB 533 × DB 534 F 4 IPS 52 and the tester ZCH8, the hybrid between these recorded an yield of 2 040.757 kg/ha. Lowest similarity coefficient value was noticed between the line DB 533 × DB 534 F 4 IPS 16 and tester DH 98-27 which revealed that they are far distinct from each other. This combination exhibited 2384.62 kg/ha yield. Genetic distance (GD) ranged from 0.041 to 0.429, with an average of 0.183. The result implied that each cluster dendrogram substantially reflected its own genetic relationship among parents. Overall, a low significant correlation of GD with hybrid performance and heterosis was detected in Table 2. Highly significant positive correlation were found between genetic distance (GD) and ginning outturn for F 1 performance (0.277) and heterosis over MRC 6918 (0.279) and DCH 32 (0.279), while significant positive correlation were found between genetic distance (GD) and ginning outturn for mid parent heterosis (0.237). Highly significant positive correlation were found between genetic distanc...

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Performance of cotton F 1 hybrids and its relation to the mean yield of advanced bulk generations

Galanopoulou-Sendouca

Roupakias

1999

European Journal of Agronomy

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Heterosis in Cotton

Cited by 5 publications

References 92 publications

Rice F1 hybrids: the breeding goal or a costly solution?

Rice F1 hybrids: the breeding goal or a costly solution?

Relationship between SSR- Based Molecular Marker and Cotton F<SUB>1</SUB> Inter Specific Hybrids Performance for Seed Cotton Yield and Fiber Properties

Performance of cotton F 1 hybrids and its relation to the mean yield of advanced bulk generations

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