Temperature and photoperiod affect grafted cactus scion necrosis

John E. Erwin

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The interaction among temperature, photoperiod, and irradiance on survival of Chamaecereus silvestrii (yellow sport) flat-grafted onto Hylocereus trigonus Haw. rootstock was studied in an effort to understand the basis for elevated scion necrosis during winter. Plants were placed in glasshouses maintained at 12, 16, 20, or 24 °C under either daylight (moles per day), 66% daylight or daylight + 100 μmol · s-1 · m-2 irradiance levels. Plants were grown with an 8-hour (short day) or 8-hour + 4-hour night interruption (long day) photoperiod. Cactus scion necrosis increased under short days and a growing temperature of 12 °C and was nearly eliminated by long-day conditions and a growing temperature of 16 °C. Irradiance did not affect scion necrosis. Plant quality rating was highest when plants were grown under long-day conditions at 16 °C.

Original languageEnglish (US)
Pages (from-to)393-396
Number of pages4
JournalHortTechnology
Volume6
Issue number4
DOIs
StatePublished - 1996

Keywords

  • Chamaecereus silvestrii
  • Hylocereus trigonus
  • axillary branching
  • irradiance
  • rootstock

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