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Effect of IAA and KT on Seed Germination and Seedling Growth of Vallisneria spiralis(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年23期
Page:
53-56
Research Field:
Publishing date:

Info

Title:
Effect of IAA and KT on Seed Germination and Seedling Growth of Vallisneria spiralis
Author(s):
ZUO Jin-cheng; LI Xiu-ling; ZHANG Peng; XIE Wei-hai; ZHOU Rui-lian; HU De-chang
College of Life Science，Ludong University，Yantai，Shandong 264000
Keywords:
eutrophication; submerged macrophytes; Vallisneria spiralis; IAA; KT
PACS:
X 17；S 555+.9
DOI:
-
Abstract:
In order to accelerate restoration ofVallisneria spiralis in eutrophic water bodies by broadcast sowing，the germination rates of V.spiralis seeds and growth of the seedlings after the seeds were treated with IAA and KT were examined.The concentrations were 0，50，100，150 and 200 mg/L and the soaking time was 24 hours and 48 hours.The results showed that proper combinations of concentration and soaking time could significantly accelerate germination of the seeds，increase the height and dry weight of the seedlings.However，all the treatments had no significant effect on root/shoot ratio.Seed germination was the most apparently accelerated by IAA concentration of 150 mg/L for 24 hours and KT concentration of 100 mg/L for 48 hours，but which was significantly inhibited by IAA concentration of 200 mg/L for 48 hours and KT concentration of 200 mg/L for 24 or 48 hours.This indicated that germination of the seeds was susceptive to the concentration and the soaking time.IAA produced more promotion effect on seedling height than KT，and the strongest promotion effect on shoot height was observed in IAA concentrations of 150 mg/L for 24 hours and 100 mg/L for 48 hours.The IAA concentration of 100 mg/L for 24 hours and KT concentration of 100 mg/L for 24 hours were the most beneficial to accumulation of dry matters for seedlings.Based on overall consideration of all the indexes，soaking seeds in IAA concentration of 150 mg/L for 24 hours would produce the most satisfying effect in application.

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Last Update: 2014-12-23