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 Study on Salt Tolerance of Apocynum venetum Linn.and Poacynum hendersonii(Hook.f.) Woodson at Stages of Seed Germination and Seedlings Growth(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年12期
Page:
128-133
Research Field:
Publishing date:

Info

Title:
 Study on Salt Tolerance of Apocynum venetum Linn.and Poacynum hendersonii(Hook.f.) Woodson at Stages of Seed Germination and Seedlings Growth
Author(s):
SHI Qiu-mei1; DENG Fan-yun1; WU Min-yan1; CHEN Dong-dong1; YIN Chuan-hua2
1.College of Life Science and Technology,Xinjiang University,Urumqi,Xinjiang 830046;
2.State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi,Xinjiang 830011
Keywords:
salt stress; Apocynum venetum Linn.; Poacynum hendersonii (Hook.f.) Woodson; seed germination; seedling growth; adaptability
PACS:
Q 945. 78
DOI:
-
Abstract:
Taking the seed of Apocynum venetum Linn.and Poacynum hendersonii (Hook.f.) Woodson as test material,the effect of different salt levels (0,50,100,200,400 and 600 mmol/L NaCl) on seed germination rate,embryo growth and radicle growth of Apocynum venetum Linn.and Poacynum hendersonii(Hook.f.) Woodson were investigated.The changes of the biomass of apocynum different parts under different salt concentration were studied by sand culture method,in order to reveal salt tolerance features of apocynum.The results showed that salt stress inhibited the seed germination rate and radicle growth of two kinds of appocynum,limit value of salt stress to seed germination rate and radicle growth was respectively 400 mmol/L NaCl and 100 mmol/L NaCl;600 mmol/L NaCl completely inhibited seed germination,but after the salt stress was relieved,the seed germination rate and radicle growth were not remarkably different from that in distilled water;salt tolerance of Poacynum hendersonii (Hook.f.) Woodson during seed germination rate and radicle growth was more higher than that of Apocynum venetum Linn,which may be adaptative to their inhabited environment.The study about seed germination and salt tolerance of apocynum was guiding significance for apocynum artificial cultivation.

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Last Update: 2014-08-02