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›› 1994, Vol. 30 ›› Issue (2): 166-169.

• 研究简报 • 上一篇    下一篇

稀土延缓杨树花粉和种子衰老的研究

杨敏生 康明 刘艳枝   

  1. 河北林学院,保定071000
  • 收稿日期:1992-12-04 修回日期:1900-01-01 出版日期:1994-03-25 发布日期:1994-03-25

EFFECTS OF RARE EARTH ELEMENT TO DELAY THE DECLINE OF VIGOR OF POPULAR POLLENS AND SEEDS

Yang Minsheng,Kang Ming,Liu Yanzhi   

  1. Hebei Forestry College Baoding 071000
  • Received:1992-12-04 Revised:1900-01-01 Online:1994-03-25 Published:1994-03-25

关键词: 银毛杨, 新疆杨, 花粉, 种子, 酶活性, 稀土元素

Abstract: In the experiments with hybridization between Populus alba × P.tomentosa and p. alba var. pyramidalis,the branches with male flowers were treated with rare earth element solutions at concentrations of 10,50 and 200ppm.The results showed that rare earth treatments increased the germination percentage of fresh pollens and delayed their vitality decline.And rare earth treatment at 200ppm was observed to have the best effects.The female flower oranches were also treated with rare earth solutions at 5,80,200 and 500ppm.The viability of seeds could be maitained for a long time after the treatments.These experiments proved that rare earth treatments could keep the cell membranes intact and slowed down the leakage of metabolities.t was found that the amount of oxygen absorbed by seeds and the vitality of dehydrogenase were inhanced,and the transportation rate of stored substances was speeded up.

Key words: P.alba × P.tomentosa, P.alba var. pyramidalis, Pollen, Seed, Activity of enzyme, Element of rare earth