NGHIÊN CỨU KHẢ NĂNG THÍCH ỨNG VỚI ĐIỀU KIỆN ÁNH SÁNG CỦA LOÀI SÂM LÔNG (Cyclea barbata Miers) TRỒNG THỬ NGHIỆM TỪ HẠT VÀ RỄ TẠI VƯỜN QUỐC GIA CÁT TIÊN
Nội dung chính của bài viết
Tóm tắt
THE STUDY OF THE ADAPTATION OF Cyclea barbata Miers TO NATURAL LIGHTING CONDITIONS IN FIELD TRIALS OF SEEDS AND ROOTS IN CAT TIEN NATIONAL PARK
The study is conducted to survey the influences of 100% and 60% natural lighting on Cyclea barbata Miers in field trials of seeds and roots. The physiological parameters such as LAR, SLA, NAR as well as relative growth rate RGR found in the two conditions of lighting are not significantly different, which shows that the Cyclea barbata has a wide range of lighting condition and the mature plants can acclimate to a high lighting condition. Moreover, Cyclea barbata Miers growing up under the forest canopy in Nam Cat Tien is supposed to belong to the truderal plant at top R of CRS triangle and the plants of roots grow better than the plants of seeds.
Từ khóa
Sâm lông, Cyclea barbata Miers, LAR, SLA, NAR, RGR, ánh sáng
Chi tiết bài viết
Tài liệu tham khảo
2. Hunt R. and Cornelissen J.H.C., Components of relative growth rate and their interrelations in 59 temperate plant species, New Phytologist, 1997, 135(3):359-417.
3. Lambers H., Chapin F.S. and Pons T.L., Plant physiological ecology, Journalof Agronomy and Crop Science, 1998, 184(2):143-144.
4. Lê Bửu Thạch, Ecophysiology of Graptophyllum species in Australia. Ph.D Dissertation, The University of Queensland, Brisbane, Australia, 2007.
5. Pattison R.R., Goldstein G., Ares A., Growth, biomass allocation and photosynthesis of invasive and native Hawaiian rainforest species, Oecologia, 1998, 117:449-459.
6. Poorter H. and Nagel Oscar, The role of biomass allocation in the growth response of plants to different levels of light, CO2, nutrients and water: a quantitative review, Australian Journal of Plant Physiology, 2000, 27:595-607.
7. Poorter H. and Remkes C., Leaf erea ratio and net assimilation rate of 24 wild species differing in relative growth rate, Oecologia, 1990, 83:553-559.
8. Poorter L., Growth responses of 15 rain-forest tree species to a light gradient: the relative importance of morphological and physiological traits, Functional Ecology, 1999, 13:296-410.
9. Shipley B., Plasticity in relative growth rate and its components following a change in inrradiance, Plant, Cell and Environment, 2000, 23:1207-1216.
10. Shipley B., Trade-offs between net assimilation rate and specific leaf area in determining relative growth rate: relationship with daily irradiance, Functional Ecology, 2002, 16:682-689.