Effect of Plant Growth Regulator on Water State of Nectarine (Prunus persica var.nectariana) During Dormant Period
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
- Issue:
- 2018年18
- Page:
- 22-28
- Research Field:
- Publishing date:
Info
- Title:
- Effect of Plant Growth Regulator on Water State of Nectarine (Prunus persica var.nectariana) During Dormant Period
- Author(s):
- LI Zhenghong; HAN Yan; MA Qingcui
- (College of Horticulture,Hebei Agricultural University,Baoding,Hebei 071001)
- Keywords:
- dormancy; peach bud; free water; bound water; plant growth regulator
- PACS:
- -
- DOI:
- 10.11937/bfyy.20171255
- Abstract:
- In this study,the ‘Shuguang’ nectarine (Prunus persica var.nectariana) was used as the test material,the changes of water state of peach buds during the dormant period were studied with Marlin Chick method and meanwhile the effects of growth regulators on buds water state were surveyed in different dormant stages,aiming to better understand the mechanism of growth regulators on dormancy control of buds.The results showed that the total water content of the buds in the dormant period was irregularly fluctuating;the free water content in the early stage of dormancy showed an upward trend,reaching the highest content in early November,followed by a 30-day decline period,and showed a slight upward trend since late December,but its maximum value was still lower than that of in early dormant period;the changes of bound water reversed from free water.The effect of growth regulators on water status varied with the period of treatment and the type of buds,ABA and GA3 could increase the content of free water in leaf buds while IAA and 6-BA decreased the content of free water slightly when treated with plant growth regulators on November 5th,and when sampled before December 3rd all plant growth regulators did no effect on free water of flower buds,later others except ABA could increase free water slightly;the content of free water increased significantly when spraying plant growth regulators at December 10th.Therefore,it was believed that the water state was related to the dormancy process,the growth regulators premature bud germination accompanied by the increasing of free water content in buds.
Last Update: 2018-10-16