The Relationship Between Fertilization Ability and Physiological and Biochemical Characters of Hawthorn Pollen and Style

doi:10.3321/j.issn:1000-7091.2002.03.014

Abstract

Abstract: Physiological and biochemical indexes of pollens and styles were compared between wild hawthorns and cultivated hawthorns(Changkou,Mianzha and Dajinxing).The result showed that there were no significant difference between cultivated hawthorns and wild hawthorns in pollen viability,but the germination rate of the pollen and the growth rate of pollen tube of the cultivated variety were lower than that of the wild variety.The pollen of Dajinxing couldn't germinate after being cultivated for 24h under 25 ℃.The germination of the pollen of wild hawthorns and cultivated hawthorns was inhibited by the style extracts of the cultivated hawthorns.Higher phenol concentration of were recorded in the pollens of cultivated hawthorns,and the phenol concentration of Dajinxing was the highest.The IAA oxidase activity in style of cultivated hawthorn was higher than that of wild hawthorn,but the content of soluble sugar was lower than that of the wild hawthorn.The POD isozymes in the style of Dajinxing,Changkou and Mianzha respectively have 2,3 and 4 more bands than that of the wild hawthorn,but there were no differences between cultivated hawthorn and wild hawthorn in the POD isozymes of pollen.

Key words: Haw thorn, Pollen, Style, Fertilization

CLC Number:

S661.5

YANG Xiaoling, LIU Yongjun, ZHANG Jianwen, GUO Shouhua, CHENG Xiujuan, LIU Guirong. The Relationship Between Fertilization Ability and Physiological and Biochemical Characters of Hawthorn Pollen and Style[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2002, 17(3): 70-74. doi: 10.3321/j.issn:1000-7091.2002.03.014.

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