Flowering Biology and Parthenocarpy of Citrus Derived from Somatic Hybridization of Mandarin Satsuma (Citrus unshiu Marc.) and Siam Madu (Citrus nobilis Lour.)

Imroatus Sa’adah, Eny Widajati, Mia Kosmiatin, Endah Retno Palupi


The somatic hybridization between Mandarin Satsuma (Citrus unshiu Marc.) and Siam Madu (Citrus nobilis Lour.) had been conducted and is expected to produce sweet seedless fruit. The research was aimed to study flowering biology as well as fruit and seed development to identify parthenocarpic lines among those lines derived from somatic hybridization. The research was carried out at Pacet Experimental Station of BB Biogen, Cianjur West Java (1150 m asl), during August 2019-July 2020. The research materials were 15 citrus of somatic hybridization lines, each consisting of 5 plants (± 2 years old). Flowering biology was observed descriptively including flower morphology, fruit development, pollen viability, and stigma receptivity. Development of fruits and seeds from un-pollinated, self-pollinated, and cross-pollinated flowers were observed to investigate the existence of parthenocarpy in those lines. The results showed that the flower morphology of 15 citrus lines derived from somatic hybridization varied in the number of petals, flower diameter, pistil length relative to the stamen, and number of stamen. The duration of development from bud emergence until fruit ripening also varied among and within lines, ranged 212-316 days. FS 25, among the 15 lines, showed a stronger character towards stimulative parthenocarpy. FS 84 and FS 89 were potential source of pollen (pollenizer) to produce seedless fruits.


cross-pollinated, pollenizer, seedless fruit, self-pollinated, un-pollinated

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DOI: http://doi.org/10.17503/agrivita.v44i1.2978

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