Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Differences in photosynthesis characters of six introduced dwarf bamboos.

Abstract

Photosynthesis characters of 6 bamboo species, which were introduced from other countries, were measured with Li-6400XT portable photosynthesis measuring system. To comprehensive evaluate the photosynthetic capacity of 6 bamboo species, we researched the photosynthesis and its response characters to light and CO2. This research can help to understand the cultivation physiology and promote the efficient technique of directing cultivation for ornament sympodial bamboo. The results showed that the photosynthesis net rate of 3 species (Sasa tsuboiana and Sasaella glabra f. albostriata) significantly higher than Sasa veitchii (carr.) Rehd and Sasaella ramose. And according the results of photosynthesis responded to light, S. tsuboiana and S. glabra f. albostriata had higher net photosynthetic rates (Pmax), lower light compensation point (LCP), normal light saturation point (LSP), while Sasa palmate f. nebulosa and Sasa admirabilis had similar characters to S. tsuboiana and S. glabra f. albostriata, except the relative higher LSP. Otherwise, S. veitchii (carr.) Rehd and S. ramose had lower Pmax, higher LCP, and normal LSP. Furthermore, the results on the CO2 responses analysis showed that S. tsuboiana and S. glabra f. albostriata also had higher Amax, higher carbonation efficiency, lower CO2 saturation point (CSP), and CO2 compensation point (CCP), but S. veitchii (carr.) Rehd and S. ramose were in opposite. Thus, S. tsuboiana and S. glabra f. albostriata were suggested to be planted widely and utilized as key species for their high use efficiency of light and CO2. S. palmate f. nebulosa and S. admirabilis had high photosynthesis capacity, but they were suggested be planted at lower-light area for their LSP. S. veitchii (carr.) Rehd and S. ramose had lowest comprehensive photosynthesis capacity, and were suggested be cultivated with facility cultivation technique to meet the demand in a small area.