Phenotypic Analysis of Parents and Their Reciprocal F1 Hybrids in Phalaenopsis
2015
Vo, T.C., Kyungpook National University, Daegu, Republic of Korea | Mun, J.H., Myongji University, Yongin, Republic of Korea | Yu, H.J., The Catholic University of Korea, Bucheon, Republic of Korea | Hwang, Y.J., Sahmyook University, Seoul, Republic of Korea | Chung, M.Y., Sunchon National University, Sunchon, Republic of Korea | Kim, C.K., Kyungpook National University, Daegu, Republic of Korea | Kim, H.Y., Kyungpook National University, Daegu, Republic of Korea | Lim, K.B., Kyungpook National University, Daegu, Republic of Korea
In this study, we studied the phenotypic and breeding efficiency of Phalaenopsis reciprocal hybrids and their parents. For reciprocal hybridization, Phalaenopsis KS Little Gem and 1747 from Taiwan were used as parents. After crossing KS Little Gem x 1747 in 2010, 34 individuals from KS 1059 hybrids were developed. The crossing between 1747 x KS Little Gem resulted in the development of 63 individuals from KS 1076 hybrids. Detailed morphological characteristics of newly developed hybrids; KS 1059, KS 1076 and their parents were collected according to guidelines determined by the Korea Seed and Variety Service (KSVS). The leaf characteristics were similar in reciprocal hybrids and their parents, except in number of leaves, which as were maximal in KS 1059. In terms of flower characteristics including number of flowers, inflorescence length, pedicel length and pedicel diameter, features of the parents were combined in the hybrids. By contrast in case of flower length, both hybrids showed similarity to KS Little Gem, and a similar pattern was observed in flower width. The petal length in hybrids and parents were similar, but the petal width of hybrids was more closer to that of KS Little Gem. The length of whiskers was long in both parents, but very short whiskers were recorded in hybrids. The length and width of the apical lobe were similar in parents and hybrids, but hybrids were closer to 1747. In the case of duration of of flowering, the maximum value of 123 days was recorded in KS Little Gem similar to KS 1059, whereas 1747 and KS 1076 had almost identical values. It can be concluded that to generate Phalaenopsis with a longer shelf life, KS Little Gem might be selected as the female parent during hybridization.
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