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Journal of Zhejiang University SCIENCE A 2002 Vol.3 No.5 P.611-616


Effects of light and temperature conditions on flowering in Mat Rush

Author(s):  SHEN Wei-qi, ZHANG Guo-ping, XI Li-feng, GUI Wen-guang

Affiliation(s):  College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China; more

Corresponding email(s):   shenwq@mail.nbptt.zj.cn

Key Words:  Mat Rush (Juncus effuses L. Var. Decipiens Bchen), Light, Temperature, Stem flowering rate, Simulation model

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SHEN Wei-qi, ZHANG Guo-ping, XI Li-feng, GUI Wen-guang. Effects of light and temperature conditions on flowering in Mat Rush[J]. Journal of Zhejiang University Science A, 2002, 3(5): 611-616.

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T1 - Effects of light and temperature conditions on flowering in Mat Rush
A1 - SHEN Wei-qi
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A1 - XI Li-feng
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DOI - 10.1631/jzus.2002.0611

The effects of photoperiod and light intensity on flowering in Mat Rush cv. Gangshan 3 were studied. The results showed that treatments with longer day length stimulated flowering significantly and increased stem flowering percentage (SFP). Plants treated with low light intensity at early stage had substantially reduced florets per cyme, SFP, tillers per plant and stem length. At middle and late stage, low light intensity significantly reduced SFP. The principal climatic factors affecting SFP were as follows: mean temperatures (MT) of the third ten-day period (TDP) in December and of the second TDP in February, actual sunlight hours (SH) of the third TDP in February and precipitation of the third TDP in March. A nonlinear simulation model for SFP was established with experimental results and corresponding climatic data (see Eq.(2)). Simulation by the above equation yielded values the same as those observed from 1992 to 2000, indicating its accuracy in describing the relationship between flowering and light and temperature conditions. The interaction between vernalization and SH is also discussed in this paper.

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