ZinniaZinnia is one of the many ornamentalOrnamental cut flowersCut flower under the umbrella of the CompositaeCompositae family. Even after satisfying the key cut flowerCut flower attributes like bright hues, form, shapeShape , and longevity, the delisted status from the top ten ornamentalOrnamental cut flowersCut flower list is disappointing. Meanwhile, on the flip side, it triggers the ornamentalOrnamental breeders to take up several ventures for further breedingBreeding improvements. These initiating forces played a pivotal role in framing this article. The principal objectives are to offer a comprehensive account to the readers of the most advanced innovative technologies and conventionalConventional breedingBreeding strategies adopted in ZinniaZinnia, while characterization of the morphological and physiological setbacks of ZinniaZinnia that hinder as well as make its breedingBreeding complex may add value to this chapter. Key breedingBreeding achievements include new cultivarCultivars development, which has been evidenced by mutation breedingMutation breeding (MB) because self-incompatibility (SI) and male sterilityMale sterility (MS) have caused significant impacts on the conventionalConventional hybridizationHybridization practices in this crop and consequences in limited numbers of hybridsHybrid in ZinniaZinnia. Barring the MB, polyploidy breedingPolyploidy breeding; in other words, doubling of geneticGenetic content had yielded several affirmative implications like heterosis, alleviation of hybridizationHybridization barriers, fertility restoration, doubling of flowersFlower, and boosting of stress toleranceTolerance levels, while the number of somaclonal variantsSomaclonal variants in ZinniaZinnia is almost negligible. Extrapolate usages of molecular tools have yielded a boon in the case of ZinniaZinnia breedingBreeding. Nevertheless, under the auspices of biotechnological advancements, a few studies on geneticGenetic relatedness using DNA markers of several ZinniaZinnia genotypesGenotype have been conducted, which have aided in acquiring the fundamental breedingBreeding information(s) concerning the geneticGenetic similarities existing among breedingBreeding partners of ZinniaZinnia and could guide meaningfully for selectionSelection of breedingBreeding mates. Moreover, the DNA-based taxonomyDNA-based taxonomy through the qualitative and quantitative characterization of DNA content has also assisted in proper identification and distinguishment of several intra- and inter-specific varietiesVariety of ZinniaZinnia, but any breedingBreeding approaches for quantitative improvements of secondary metabolitesSecondary metabolites in ZinniaZinnia are yet to be documented. However, the reviewed scenario of ZinniaZinnia breedingBreeding throws several challenges to the ornamentalOrnamental researchers in eradication of physiological hindrances to promote easy-to-do hybridizationHybridization of it, in-depth studies on breedingBreeding of varietiesVariety with biotic as well as abiotic stressAbiotic stress-resilient capability, adoption of genetic engineeringGenetic engineering aids to develop uniquely hued ZinniaZinnia’s ray floretsRay florets , and addition of fragrance attributes in its blooms. This chapter also encompasses the hypothetical aspects of different advanced breedingAdvanced breeding strategies and the adoption of what the researchers may herald some novel chances towards further improvements.

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Breeding Overview on Ornamental Youth-and-Age Flower (Zinnia spp.)

  • Moumita Malakar,
  • R. Gokiladevi,
  • Sukanta Biswas,
  • Subodh Kumar Dutta

摘要

ZinniaZinnia is one of the many ornamentalOrnamental cut flowersCut flower under the umbrella of the CompositaeCompositae family. Even after satisfying the key cut flowerCut flower attributes like bright hues, form, shapeShape , and longevity, the delisted status from the top ten ornamentalOrnamental cut flowersCut flower list is disappointing. Meanwhile, on the flip side, it triggers the ornamentalOrnamental breeders to take up several ventures for further breedingBreeding improvements. These initiating forces played a pivotal role in framing this article. The principal objectives are to offer a comprehensive account to the readers of the most advanced innovative technologies and conventionalConventional breedingBreeding strategies adopted in ZinniaZinnia, while characterization of the morphological and physiological setbacks of ZinniaZinnia that hinder as well as make its breedingBreeding complex may add value to this chapter. Key breedingBreeding achievements include new cultivarCultivars development, which has been evidenced by mutation breedingMutation breeding (MB) because self-incompatibility (SI) and male sterilityMale sterility (MS) have caused significant impacts on the conventionalConventional hybridizationHybridization practices in this crop and consequences in limited numbers of hybridsHybrid in ZinniaZinnia. Barring the MB, polyploidy breedingPolyploidy breeding; in other words, doubling of geneticGenetic content had yielded several affirmative implications like heterosis, alleviation of hybridizationHybridization barriers, fertility restoration, doubling of flowersFlower, and boosting of stress toleranceTolerance levels, while the number of somaclonal variantsSomaclonal variants in ZinniaZinnia is almost negligible. Extrapolate usages of molecular tools have yielded a boon in the case of ZinniaZinnia breedingBreeding. Nevertheless, under the auspices of biotechnological advancements, a few studies on geneticGenetic relatedness using DNA markers of several ZinniaZinnia genotypesGenotype have been conducted, which have aided in acquiring the fundamental breedingBreeding information(s) concerning the geneticGenetic similarities existing among breedingBreeding partners of ZinniaZinnia and could guide meaningfully for selectionSelection of breedingBreeding mates. Moreover, the DNA-based taxonomyDNA-based taxonomy through the qualitative and quantitative characterization of DNA content has also assisted in proper identification and distinguishment of several intra- and inter-specific varietiesVariety of ZinniaZinnia, but any breedingBreeding approaches for quantitative improvements of secondary metabolitesSecondary metabolites in ZinniaZinnia are yet to be documented. However, the reviewed scenario of ZinniaZinnia breedingBreeding throws several challenges to the ornamentalOrnamental researchers in eradication of physiological hindrances to promote easy-to-do hybridizationHybridization of it, in-depth studies on breedingBreeding of varietiesVariety with biotic as well as abiotic stressAbiotic stress-resilient capability, adoption of genetic engineeringGenetic engineering aids to develop uniquely hued ZinniaZinnia’s ray floretsRay florets , and addition of fragrance attributes in its blooms. This chapter also encompasses the hypothetical aspects of different advanced breedingAdvanced breeding strategies and the adoption of what the researchers may herald some novel chances towards further improvements.