Evaluation of the Reproduction Proficiency of Carnation (Dianthus caryophyllus L.) Hybrids and Varieties as Search of Useful Parentals for a Breeding Program

  • Johana Carolina Soto Sedano Universidad Militar Nueva Granada.
  • Juan José Filgueira Duarte Universidad Militar Nueva Granada.
Palabras clave: pollination, gynoecium, androecium.

Resumen

Colombia is the world’s leading exporter of carnation (Dianthus caryophyllus L.) and the second of fresh cut flowers, that is why the floriculture is one of the economic sectors that generate more exchange in exports of our country. However, carnation growers must face the problem of decreasing revenues, due to the rot vascular disease produced by the pathogen Fusarium oxysporum f.sp. dianthi. Studies show that the most effective way to face the problem is to find resistant carnation varieties, obtained by breeding programs. Thus, here we present a floral evaluation of the gynoecium and androecium, possible flower defects and the reproduction capacity as well, all this useful for the breeding of four carnation commercial varieties and two hybrid lines, all of them obtained through a breeding program focus on Fusarium sp. resistance. Direct and reciprocal breeding crosses were done between all materials in order to establish in which crosses were produced viable seeds of F1 populations. As a result, the reproduction capacity of the six parental was established and a total of 809 seeds were produced from nine successful crosses. Also, it was established that floral opening stage II, is the stage in which the pollen is mature and viable. Moreover, it was established that Kaly, Candy and UM503 were the parental that have best performances as acceptor; in contrast UM226 was the best pollen donator. On the other hand, Lady Green had poor performance both as donor and acceptor.

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Cómo citar
Soto Sedano, J. C., & Filgueira Duarte, J. J. (2016). Evaluation of the Reproduction Proficiency of Carnation (Dianthus caryophyllus L.) Hybrids and Varieties as Search of Useful Parentals for a Breeding Program. Revista Facultad De Ciencias Básicas, 8(2), 184-195. https://doi.org/10.18359/rfcb.2081
Publicado
2016-09-01
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