Influence of Seven Growth Regulators on Fruit Set, Pollen Germination and Pollen Tube Growth of Almonds  

作　　者：Carlos Sotomayor Jorge Castro Nicolas Velasco Roman Toro 

机构地区：[1]Pontificia Universidad Catolica de Chile, Faculty of Agronomy and Forestry Engineering, Santiago, Chile

出　　处：《Journal of Agricultural Science and Technology(B)》2012年第9期1051-1056,共6页农业科学与技术（B）

摘　　要：To improve fruit set in ＂Carmel＂ almond （Prunus dulcis） trees grown in the 6th region of Chile, seven different growth regulators （GRs） were sprayed onto flowering branches： gibberellic acid （GA3）, Promalin, naphthaleneacetic acid （NAA）, Thidiazuron, Kinetin, Point-tomatomone and Brassinolide. The percentage of fruit set was determined by comparing the initial number of flowers present on each treated branch with the total number of almonds on the branches 50 days after anthesis. In comparison to the controls, Brassinolide, Point-tomatomone and Promalin achieved increases in fruit set of 19.4%, 14.5% and 12.9%, respectively. A parallel experiment was done in vitro, on the effects of these GRs on pollen germination and pollen tube growth. The greatest pollen germination （4 hours at 20 ~C） occurred with Brassinolide and GA3, which were significantly higher than the control, while NAA and Promalin significantly reduced germination. For pollen tube growth （24 hours at 20 ~C）, the greatest lengths were observed with Point-tomatomone and Brassinolide, which were significantly longer than the control, while NAA, Thidiazuron and Promalin were significantly shorter than the control, and the least growth was observed with Kinetin.

关 键 词：ALMOND growth regulators POLLINATION fruit set. 

分 类 号：S661.2[农业科学—果树学] TQ452[农业科学—园艺学]