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Seed Characters and Seedlings Growth Rhythm of Sapium japonicum(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年08
Page:
76-81
Research Field:
Publishing date:

Info

Title:
Seed Characters and Seedlings Growth Rhythm of Sapium japonicum
Author(s):
GAO Zhu1; 2; LIU Tengyun1; WANG Xiaoling1; 2; LI Yanqiang1; YANG Aihong1; YU Faxin1
(1.Jiangxi Engineering Research Center for Eco-remedication of Heavy Metal Pollution/Institute of Biological Resources，Jiangxi Academy of Sciences，Nanchang，Jiangxi 330096；2.Jiangxi Key Laboratory of Poyang Lake，Nanchang，Jiangxi 330096)
Keywords:
Sapium japonicum; seed characters; seed dormancy; growth rhythms
PACS:
-
DOI:
10.11937/bfyy.201608022
Abstract:
As a local energy plant, Sapium japonicum had been great concerned by researchers，while lack of research on its seeds basic characteristics and artificial breeding techniques，now its mainly source is still wild one.By measuring Sapium japonicum fruit and seed characteristics，the effect on seed germination and germination process-related activity changes under warm-water soaked and gibberellin(GA) treatments were analyzed，to determinate seedling growth regularity.The results showed that the average fruit fresh weight and thousand-grain weight were 1.45 g，173.62 g.The coefficient of variation was from 2.08% to 10.87%.The biggest coefficient of variation among them was of seeds height，and the coefficients of variation of fruit were smaller than those of seed.Warm-water soaked and GA treatment could improve seeds moisture content and amylase activity，furthermore break seeds dormancy and promote seeds germination.The gained better seed germination rate were treated by 400 mg/L GA till 800 mg/L GA，and the seed germination rate reached up to more than 75%.With the increase of sowing depth the germination rate increased at first and then decreased.2-4 cm were the best sowing depth.The one-year seedling stage showed a bimodal curve，and peak value were obtained at 110 d and 150 d，which were corresponded with the twice pumping shoots a year at the seedling stage.The high oil yielding could be achieved by the bigger-seeded selection，while cotyledon thickness was the key selecting factors，and also the nutrient accumulation in cotyledons could be attained by using corresponded nutrient measures.Warm-water soaked and GA treatment could improve seeds water absorption and the activity of amylase，thus to break seeds dormancy and promote seeds germination.Strengthened fertilizer and water management at the spring shoot and autumn shoot stage could promote seedling growth especially.

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Last Update: 2016-06-24