RESULTS OF RESEARCH INTO GERMINATION RATES OF SEEDS OF PINUS OOCARPA SCHIEDE EX SCHLECHTENDAL PLANTED IN LANG HANH (LAM DONG PROVINCE)
Keywords:
Pinus oocarpa, Seed, Germination rateAbstract
Germination rate of seeds were determined for Pinus oocarpa planted in Lang Hanh
(Lam Dong Province). Its seeds should be harvested to the highest yield from January
to February. Seeds length were ranged from 0.40 cm to 0.75 cm, with the sizes from
0.40 cm to 0.50 cm were 32% and the sizes from 0.50 cm to 0.75 cm were 68%.
Seeds width were varied from 0.20 cm to 0.35 cm. Number of seeds in a fruit are 49.3
and number of plump seeds in a fruit are 8.3; the number tested seeds in per kg are
88,800 and the clean seeds in per kg are 82,700 seeds/kg. Seeds of Pinus oocarpa
treated at a temperature of 40°C (2/5 boiled water mixed 3/5 cold water) for 24 hours,
and then there were incubated in cloth bag and kept in the incubator at a temperature
of 33°C. It has the highest sprout was 90.34%, and the value germination was
61.43%. Germination rates increases over time is the highest sprout was 8.82 at day
9th and decreased gradually until day 23th.
References
/1.Phạm Hoài Đức, 1992. Hướng dẫn kỹ thuật hạt giống cây rừng. Dịch từ Willan
R.L., 1985. A guide to forest seed handing with special reference to the tropics. NXB
Đại học và giáo dục chuyên nghiệp Hà Nội.
/2.Nguyễn Hoàng Nghĩa, 2004. Các loài cây lá kim ở Việt Nam. NXB Nông nghiệp,
trang 46-47, 54–55.
/3.Hứu Vĩnh Tùng, 1997. Nghiên cứu thực nghiệm Khoa học Lâm nghiệp của các
Trung tâm vùng Tây Nguyên. Viện Khoa học Lâm nghiệp Việt Nam, trang 60-62.
/4.Eis, S.; Craigdallie, D. 1981. Reproduction of conifers: A handbook for cone
crops assessment. Environment Canada, Canadian Forestry Service, Pacific Forest
Research Centre, Victoria, BC. Information Report BC-X-219. 14 p.
/5.Ford-Robertson, F.C (ed.). 1971. Terminology of forest science, Technology,
Practice and Products. Multilingual Forest Terminology. Ser. 1. Soc. Am. For. Wash.
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