不同时期拉枝刻芽对‘绿岭’核桃萌芽成枝和内源激素含量的影响  

Effects of Bending Branch and Notching Buds in Different Periods on Endogenous Hormone Concentrations and Shoot Growth of ‘Lüling’ Walnut

作　　者：魏常燕[1,2] 张雪梅[1,2] 齐国辉[1,2] 李保国[1,2] 孙萌[1,2] 祁娇娇[1,2] 

机构地区：[1]河北农业大学林学院,保定071000 [2]河北省核桃工程技术研究中心,临城054300

出　　处：《林业科学》2013年第6期167-171,共5页Scientia Silvae Sinicae

基　　金：河北省科技计划项目(11230115D-2)

摘　　要：核桃（Juglans regia）又名胡桃,为胡桃科（Juglandaceae）核桃属（Juglans）落叶乔木,位列世界四大干果（核桃、扁桃、腰果、榛子）之首（张毅萍,2002）,素有＂木本油料之王＂的称号。20世纪80年代以来,我国核桃生产逐步由粗放、半粗放经营转向科学管理,集约化栽培,并大力开展核桃良种选育和推广工作,Three-year-old saplings of ＇ Ltlling＇ walnut （Juglans regia） from Hebei Ltiling fruits Co. Ltd. were used to study effects of bending branch and notching bud in different periods on the budding rate, shoot growth and contents of endogenous hormone （GA3, IAA, ABA and ZT）. The results showed that the average budding rates for the branch bending angles of 45°, 90° ,135° were 65.03% , 71.38% , 62.45% , respectively, and the budding rate with the bending angle at 90° was very significantly higher than that of bending angles at 45° and 135°. The average budding rates of notching bud treatment in March and April were 4.43% and 3.57% higher than that of non-notching bud treatment. The average shoot lengths with bending branch angles of 90° and 135 o were decreased by 18.71% and 49.44% compared with that with bending angle at 45° in March. The average shoot lengths with notching bud and bending branch to 90° and 135° treatments were 46.93% and 60.45% lower than that of bending branch 45° in March. There was no significant difference in shoot lengths among every treatment treated in April. The proportions of young shoots at the base of branches with bending branch to 90° and 135° treatments in March were 22.76% higher than that of bending branch to 45° treatment. The upper buds of branches with bending angle 45 ° had the highest contents of GA3 , IAA and ZT, and the contents were very significantly higher than that of bending branch to 90°, which in turn were very significantly higher than that of bending branch to 135°. The content of ABA in the upper buds of bending branch to 135° was very significantly higher than that of bending branch to 45°and 90°, and that in the base buds was very significant lower than that of bending branch to 45°and 90°. The ratio of GAJABA in the upper buds of bending branch to 45° was very significantly higher than that of bending branch to 135°, and that in the branch base buds was very significantly lower than that of bending branch to 135°. The ratios of

关 键 词：核桃 拉枝 刻芽 萌芽率 新梢 内源激素 

分 类 号：S759.33[农业科学—森林经理学]