Effect of Shading on Growth and Net Photosynthetic Rate of Siraitia grosvenorii in Summer(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of Shading on Growth and Net Photosynthetic Rate of Siraitia grosvenorii in Summer

Author(s):: MA Ke-qun; XU Han-bing; FAN Hong-wei; Xinyang College of Agriculture and Forestry,Xinyang,Henan 464000

Keywords:: Siraitia grosvenorii; shading; lateral vine; growth; net photosynthetic rate

Abstract:: Taking introduced Siraitia grosvenorii as material,the growth of secondary lateral vine and the rate of net photosynthetic of Siraitia grosvenorii under different shading treatments (0%,20%,45% and 70%) were studied in natural high temperature.The results showed length of lateral vines and interknobs under 70% shading treatment was significantly higher than other shading treatments,but lateral vine diameter,new vine number,leaf thickness,palisade tissue thickness and net photosynthetic rate were significantly lower than other shading treatments.So 70% shading treatment could not be applied to summer cultivation.The lateral vines’ length and diameter,new vine number and net photosynthetic rate under 20% and 45% shading treatment were all significantly higher than 0% shading treatment,and there was no significant difference in leaf thickness and palisade tissue thickness between the two treatments.It indicated 45% and 20% shading treatments were both better than full sunshine.Because lateral vines’length and leaf acreage were significantly higher under 45% shading treatment than 20% shading treatment,so 45% shading treatment was the best one.

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Last Update: 2014-08-13