西瓜根系分泌物对西瓜种子萌发及幼苗根系活力的影响  

Effects of Root Exudates of Watermelon Cultivars on the Germination of Watermelon Seeds and Root Activities of Watermelon Seedlings

作　　者：刘博[1,2] 吴凤芝[2] 包静[2] 

机构地区：[1]黑龙江省农业科学院信息中心,黑龙江哈尔滨150086 [2]东北农业大学园艺学院,黑龙江哈尔滨150030

出　　处：《北方园艺》2008年第11期39-42,共4页Northern Horticulture

基　　金：黑龙江省自然科学基金资助项目(C200629)

摘　　要：以对西瓜枯萎病菌抗性不同的西瓜抗病品种(甜妞)、感病品种(天使)和不同的西瓜嫁接砧木(南瓜、葫芦)为试材,研究根系分泌物对西瓜种子萌发及西瓜幼苗根系活力的影响。结果表明:抗病品种根系分泌物对自身种子的萌发、幼苗的根系活力有促进作用,感病品种根系分泌物对自身种子的萌发、幼苗的根系活力有抑制作用,葫芦砧木自根苗根系分泌物对抗、感品种种子的萌发、幼苗的根系活力均有抑制作用,南瓜砧木嫁接苗、自根苗根系分泌物对抗、感病品种的种子萌发、幼苗的根系活力均有显著的促进作用。Selected two kinds of watermelon cultivars. Tiarmiu is resistant to Fusarium oxysporurn f. sp niveum （E. F. Smith）Snyder ＆ Hansen and Tianshi is susceptible to itl They were grown as seedlings ＇or on calabash or pumpkin rootstocks as experimental materials. Obtained the extract of root exudates using vermiculite cultivation and investigated effects of toot exudates on the germination of watermelon seeds and root activities of watermelon seedlings. The results showed that root exudates of resistant cultivars, grafted seedlings on pumpkin rootstocks and pumpkin own-rooted seed- lings promoted the germination of watermelon seeds and root activities of watermelon seedlings, but root exudates of susceptible cultivars and grafted seedlings on calabash rootstocks inhibited the germination of watermelon seeds and root activities of watermelon seedlings.

关 键 词：西瓜 根系分泌物 发芽率 根系活力 

分 类 号：S651.604.1[农业科学—果树学]