The Effect of Ice Nucleation Active Bacteria on Cold Resistance of ApricotFlower Organs

ACTA HORTICULTURAE SINICA ›› 2002, Vol. 29 ›› Issue (1): 20-24.

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The Effect of Ice Nucleation Active Bacteria on Cold Resistance of ApricotFlower Organs

Yang Jianmin¹ , Meng Qingrui¹ , Peng Weixiu¹ , Li Shaohua² , Sun Fuzai³ , and Zhao Tingchang³

(¹ College of Forestry , Hebei Agricultural University , Baoding 071000; ² College of Horticultural Sciences , China Agricultural University , Beijing 100094;　³ Institute of Plant Protection , Chinese Academy of Agricultural Sciences , Beijing 100094)

Received:1900-01-01 Revised:1900-01-01 Online:2002-02-25 Published:2002-02-25

Abstract

Abstract: Abstract : The hardiness of apricot flower organs were investigated with two varieties , by comparing the cold resistance. The obvious difference among the apricot flower organs and varieties with or without INA bacteria
inoculation were observed. The variety Youyi had higher cold hardiness than Longwangmao. In addition , tests on the cold hardiness difference in various organs showed petal > stamen > pistal . Under stress of low temperatures ,
treatment of bacteria can greatly raise relative electric conductivity , permeability of cell membrane , brown change and content of MDA , and cut down SOD , POD activity of apricot organs. The treated flower organs showed
symptoms of serious frost at - 2 to - 3 ℃, and had supercooling points of - 2 ℃about higher than controls. The results demonstrated that INA bacteria are one major factor to incite frost damage to apricot flower organs , so during
flowering phage , frost injury may be relieved through control of INA bacteria.

Key words: INA bacteria, Apricot, Flower organs, Cold resistance

CLC Number:

S 662. 2

Yang Jianmin;Meng Qingrui;Peng Weixiu;Li Shaohua;Sun Fuzai;and Zhao Tingchang. The Effect of Ice Nucleation Active Bacteria on Cold Resistance of ApricotFlower Organs[J]. ACTA HORTICULTURAE SINICA, 2002, 29(1): 20-24.

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The Effect of Ice Nucleation Active Bacteria on Cold Resistance of ApricotFlower Organs

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