Journal of Food, Agriculture and Environment

The development of a new monoecious melon hybrid from andromonoecious plants and a quality of the obtained hybrid

Author(s):

Ping Zhang ^1*, Yan-song Ao ²

Recieved Date: 2013-06-28, Accepted Date: 2013-09-23

Abstract:

Sex determination in plants, which determines the pattern of breeding and cultivation, is a fundamental developmental process and has an important economic value. This study investigated the transfer of monoecious characteristics of monoecious muskmelons to oriental melons with andromonoecious characteristics through crossing. The F₁ hybrids expressed monoecism. The ratio of monoecism and andromonoecism in the F₂ generations was 3:1. After backcrossing with andromonoecious oriental melons, the generations showed monoecism and andromonoecism separated in the ratio of 1:1. The results showed that the monoecious characteristic was controlled by a single dominant gene; therefore, heredity was simple and stable. The crossing generations had been developed as oriental melons with advanced characteristics through one crossing and two backcrossings. Moreover, two monoecious lines were obtained through continuous self-crossing and selection, which would be used as a female to produce crossing seeds. A comparison test was performed between the melon cultivars of AB (BC₂-5-3-4-8), AC (BC₂-2-1-1-7), A, B, C and Japanese muskmelon. The role of CmACS-7-A in sex determination was confirmed by Boualem et al. One of the two missense mutations, G19E, in a highly conserved amino acid position affects the function of the protein. The change of the A57V amino acid reduced the enzymatic activity of CmACS-7-A , which is required for stamen growth in bisexual flowers in andromonoecious lines.

Keywords:

Breeding, sex determination, transformation generation, Chi-square test, genetic analysis

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Agriculture
Pages: 1154-1159

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