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cje ›› 2010, Vol. 29 ›› Issue (09): 1679-1684.

• Articles •     Next Articles

Effects of environmental factors on bolting and flowering of ephemeral plant Lepidium perfoliatum L.

YUAN Jun-wen, HUANG Dai-hong, XU Dong-sheng, ZHAO Juan, CHEN Sha-sha, LAN Hai-yan, ZHANG Fu-chun   

  1. Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
  • Online:2010-09-08 Published:2010-09-08

Abstract: Cruciferat species Lepidium perfoliatum, a typical early-spring ephemeral plant in Xinjiang desert, was planted on three types of growth substrates
 under different growth conditions and with various vernalization durations, aimed to study the effects of environmental factors on the bolting and flowering of L. perfoliatum. On the substrate vermiculite∶perlite=3∶1, the percentage of L. perfoliatum seedling emergence was significantly higher than that on nutrient soil or natural habitat soil. Growth substrate had little effects on whether bolting or not, but affected the bolting time and fecundity. Artificial vernalization at 4 ℃ promoted the bolting of the plants grown on the three substrates in closed balcony, but had no significant effects on the bolting when the substrates were placed in cultivation room or outdoor environment. The bolting and flowering of L. perfoliatum responded most remarkably to illumination and temperature. The interaction between the photoperiod changed from short to long and the certain period of low temperature at seedling stage was the key factor promoting the bolting and flowering of L. perfoliatum.

Key words: Alnus, Arbuscular endomycorrhizal fungi, Semi-nested LP-PCR-SSCP