Journal of Zhejiang Agricultural Sciences ›› 2024, Vol. 65 ›› Issue (9): 2132-2137.DOI: 10.16178/j.issn.0528-9017.20230740

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Comparison of drought resistance during germination of four perennial ryegrass varieties

XIONG Xue1,2(), DONG Jianxin1,2, LI Yanan1, ZHU Guofen1,2, DING Xiaosong3   

  1. 1. Hebei Minzu Normal University, Chengde 067000, Hebei
    2. Key Laboratory of Botany State Ethnic Affairs Commission, Chengde 067000, Hebei
    3. Saihanba Machinery Forest Farm, Weichang 068453, Hebei
  • Received:2023-07-19 Online:2024-09-11 Published:2024-09-11

Abstract:

This study simulated drought stress with PEG-6000 at 0%, 5%, 10%, 15%, and 20%, and studied the effects of different drought treatments on the germination potential, germination rate, germination index, drought resistance index, plumule length, radicle length, and fresh weight of four perennial ryegrass varieties. The results showed that four perennial ryegrass varieties showed certain changes in various indicators during the germination period under different drought conditions, and there were significant differences among the varieties. As the stress intensity increased, the decline in various indicators gradually increased. Through comprehensive evaluation using the membership function method, the drought resistance of each variety was ranked as follows: Tailv>Lichuan>Lvtuo>Shandian.

Key words: perennial ryegrass, germination period, drought resistance, membership function method

CLC Number: