Hastening effect of intercalated long days on short-day induction in Impatiens balsamina, a qualitative short day plant

Toky, K. L. ; Nanda, K. K. (1969) Hastening effect of intercalated long days on short-day induction in Impatiens balsamina, a qualitative short day plant Planta, 89 (2). pp. 198-202. ISSN 0032-0935

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Official URL: http://www.springerlink.com/content/g2130kh5728208...

Related URL: http://dx.doi.org/10.1007/BF00386985

Abstract

The inductive effect of short-day (SD) cycles on floral-bud initiation in Impatiens balsamina was enhanced and the minimum requirement for SD cycles for flowering reduced by intercalated long days (LDs). Thus, floral buds developed into flowers with only 4 SD cycles in plants receiving them individually or in pairs alternating with LDs, but failed to develop in those receiving 4 SD sycles consecutively. The number of flowering plants increased while the periods to floral-bud initiation and flowering, calculated from the day of completion of 4 and 8 SD cycles, respectively, decreased with an increase in the number of intercalated LDs.

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