Comparative Study on the Methods for Restoring the Vigor of Aged Seeds of Radish

doi:10.7668/hbnxb.2015.S1.034

Abstract

Abstract: Comparing their ability of different plant growth regulators to restore the vigor of aging seeds will provide evidence for the recovery of aging seeds vigor and germplasm resources conservation.The aged seeds of two radish cultivars were treated by 7 plant growth regulators or chemicals,including gibberellins(GA₃),6-benzyladenine(6-BA),1-Naphthaleneacetic acid(NAA),15% paclobutrazol WP,salicylic acid(SA),KH₂PO₄ and polyethylene glycol(PEG)at different concentrations.The germination potential,germination percentage,germination index and vigor index were employed to evaluate their effects on seed vigor recovery.The results showed that GA₃,6-BA,NAA,SA,KH₂PO₄ and PEG improved the seed vigor to some extent,and the effects of 300 mg/L PEG and 100 mg/L GA₃treatments were better than that of other methods.And if the seed basic vigor is high,GA₃ treatment can get the best effect,and for the lower vigor seeds,the effect of PEG treatment is better.This result may be due to the aging degree of different seeds which have different physiological and biochemical status inside.

Key words: Radish seed, Aging, Plant growth regulator, Vigor repairing

CLC Number:

S631.03

SONG Jiang-ping, WANG Jing-lei, LI Yang, SHEN Di, LI Xi-xiang. Comparative Study on the Methods for Restoring the Vigor of Aged Seeds of Radish[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(S1): 189-195. doi: 10.7668/hbnxb.2015.S1.034.

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