Journal Article

Chemical Inhibitors of Viviparous Germination in the Fruit of Watermelon

Yoshiki Kobayashi, Kensuke Nabeta and Hideyuki Matsuura

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 51, issue 9, pages 1594-1598
Published in print September 2010 | ISSN: 0032-0781
Published online July 2010 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcq103
Chemical Inhibitors of Viviparous Germination in the Fruit of Watermelon

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It is well known that the seeds of watermelon [Citrullus lanatus (Thunb.) Matsum and Nakai] have a high potential to germinate when the fruit has ripened. When removed from the mature fruit, the seeds can germinate under appropriate conditions. However, it is unclear why they cannot germinate in the flesh of the fruit. Here, we show that cis-ABA and its β-d-glucopyranosyl ester (ABA-β-GE) accumulate in the flesh of the fruit at levels high enough to inhibit seed germination. This result indicates the existence of chemical factors that inhibit viviparous seed germination of watermelon.

Keywords: Abscisic acid; Abscisic acid-β-d-glucopyranosyl ester; Germination inhibition; Watermelon fruit

Journal Article.  2702 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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