Effect of Drought or Salt Stress on the Germination Characteristics of Physalis alkekengi Seed(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of Drought or Salt Stress on the Germination Characteristics of Physalis alkekengi Seed

Author(s):: TONG Jiayun; LAN Tian; REN Xiaoxiang; (School of Chinese Materia Medica，Guangzhou University of Chinese Medicine，Guangzhou，Guangdong 510006)

Keywords:: Physalis alkekengi; seed germination; drought stress; salt stress

Abstract:: Germination tests of Physalis alkekengi seed under drought or salt stress were conducted，using different concentration of solution(0%-25.0% polyethylene glycol-6000 or 0-150 mmol?L-1 NaCl stress，respectively) as substitutes for water.The results showed that the seed germination was delayed and the germination percentage(GP)，germination energy(GE) and germination index(GI) were significantly declined as the PEG concentration increasing.No germination was observed when PEG concentration was 25.0%.The C50(critical stress concentration) of PEG-6000 was 12.3%，which was higher than tomato seeds(8.0%-10.8%).The GP，GE and GI were also significantly declined as the NaCl concentration increasing.The GP was lowered by 43.0% when NaCl concentration was 150 mmol?L-1，and the sprouted seeds were failed to develop into seedlings.The C50 of NaCl was 107.0 mmol?L-1，which was lower than sun flower seeds(258.0 mmol?L-1).

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Last Update: 2016-07-15