行政院農業委員會台南區農業改良場  研究彙報第34號
 

薑荷花休眠性之研究

張錦興

摘  要

張錦興.1997.薑荷花休眠性之研究。台南區農業改良場研究彙報34:26~34。

薑荷花在本省自然休眠期在10∼11月間,若以塑膠布隧道棚保溫加上暗期中斷電照4小時,可將花期延長到1月3日、休眠期延到3月8日,切花產量增加26.0枝/m2,並維持正常的切花長度、花梗直徑與花苞數目,而畸形花僅有8.8%;若僅以電照處理,雖延長花期與延遲休眠,但切花品質變差而全是畸形花,而僅以保溫處理的效果最差,無法延長花期、休眠僅延至12月19日,說明薑荷花休眠誘導主因在日照時數縮短,溫度降低是輔因子。進入休眠後,種球在土中過冬而休眠逐漸解除,到了2月5日以後掘球,以30∼35℃溫度催芽的萌芽速率最快,在40天內開始萌芽、60天內萌芽終止;而任何溫度貯藏處理30天後再以30℃下催芽皆無法提早萌芽,顯示此時種球的休眠已解除,但在2月5日之前掘球以10∼15℃濕藏可打破休眠而提早萌芽,此時之後10∼15℃的處理則有延遲萌芽的現象,暗示薑荷花種球貯藏溫度在此之間。

關鍵詞:薑荷花、休眠性

接受日期:1997年6月30日


Dormancy in Curcuma (Curcuma alismatifolia)

Chang, C. S.

Summary

Curcuma plants were dormant naturally during October to November in Taiwan.  It could extend flowering period and delay dormancy to Jan. 3 and Mar. 8 respectively, and increased the cut flower numbers to 26.0 per m2 with 8.8% abnormal flowers, when curcuma treated with plastic PE tunnel to keep canopy warm plus light illumination from 22:00 p.m. to 02:00 a.m.  This treatment also increased the quality on length of the cut flower stalks, diameter of stalk and the number of ink petal.  Plants treated with night-break lighting could extend flowering period and delay dormancy, but reduced the quality of cut flowers and all flowers were abnormality.  Plants treated with plastic PE tunnel didn’t extend flowering period, but only delayed dormancy to Dec. 12.  These experiments hinted that the major factor induced curcuma dormancy was daylight, and low temperature was cofactor.  When plants became dormant, corms break dormant gradually in field during winter.  Corms sprouted at 30~35℃ more earlier while corms harvested after Feb. 5, that didn’t begin-and end-sprouting until 40 days and 60 days after sprouting at 30~35℃.  But corms forcing with low temperature before sprouting on 30℃ didn’t advance the time of sprouting.  These showed curcuma corms had broken dormant at February naturally.  Corms storied with wet-stored at 10~15℃ would break dormant and sprout more earlier when harvested before Feb. 5, but this treatment would delay the time of sprouting when corms harvested after Feb. 5.  This hinted curcuma corms could be stored at this temperature for long time.

Keywords: curcuma, dormancy

Accepted for publication: June 30, 1997


 

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