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http://dx.doi.org/10.5010/JPB.2002.29.3.193

Effect of Phenylacetic Acid (PAA) on Embryo Formation in Anther and Microspore Culture of Paeonia lactiflora  

Kwon, Yong-Sham (Department of Agronomy, College of Agriculture, Kyungpook National University)
Shin, Young-Ae (Department of Agronomy, College of Agriculture, Kyungpook National University)
Sohn, Jae-Keun (Department of Agronomy, College of Agriculture, Kyungpook National University)
Publication Information
Journal of Plant Biotechnology / v.29, no.3, 2002 , pp. 193-198 More about this Journal
Abstract
The objective of this study was to determine the effects of phenylacetic acid (PAA) on embryo production in anther and microspore culture of herbaceous peony (Paeonia lactiflora Pall.). The anthers of herbaceous peony were cultured on MS medium with 0 to 100 mg/L PAA according to two-step culture method. The ruptured anthers were transferred onto embryo formation medium without growth regulators. The MS medium with 2 mg/L PAA was effective in enhancing of direct embryogenesis and producing of normal embryo with two cotyledons from the cultured anthers. However, the increase of PAA concentration more than 5 mg/L PAA inhibited the embryo formation and promoted to callus formation from the anthers. The PAA affects significantly on the division of microspore and embryo formation in shed pollen culture and the best result was obtained from a medium supplement with 2 mg/L PAA. The preculture of anther for 10 days on solid medium with 2 mg/L PAA was effective for embryo formation from shed microspore of herbaceous peony.
Keywords
Embryo production; herbaceous peony; phenylacetic acid; shed pollen culture;
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