金华佛手早期落果生理原因初探  

Preliminary Study on the Cause of Early Physiological Fruit-Iet Drop of Jinhua Fingered Citron

作　　者：王明鑫[1] 方芳[1] 蔡美亮 王学军 楼虎春 

机构地区：[1]浙江师范大学生物系

出　　处：《中国柑桔》1994年第1期7-8,共2页South China Fruits

摘　　要：佛手幼果发育过程中，蛋白质含量随幼果发育略有提高，开花后第５～２５天由５．６４１ｍｇ／ｇ鲜重增至８．０７６ｍｇ／ｇ鲜重。吲哚乙酸含量在开花后第５～１０天由４３．３７μｇ／ｇ干重升至７４．４０μｇ／ｇ干重，然后急剧下降，至开花后第２５天降至１３．５０μｇ／ｇ干重。吲哚乙酸氧化酶活性显示，在开花后第１０～２５天由２．７２μｇ／ｈ·ｍｌ酶液升至１１．１７μｇ／ｈ·ｍｌ酶液。佛手幼果发育过程中，吲哚乙酸氧化酶活性升高，引起吲哚乙酸含量下降，蛋白质等养分积累减少，可能是佛手早期落果的生理原因之一。During the fruitlet development of Jinhua fingered citron(Citrus medica var.sar-codoctylis swing.) ,the protein rate in fruitlet slightly increased from 5.641mg/g freshweight(FW) to 8. 076 mg/g FW in 5-25 days after blossom; IAA increased from 43.37 μg/gdry weight(DW ) to 74.40μg/g DW in 5-10 days after blossom, then reduced dramaticallyto 13. 5μg/g DW at 25 days after blossom;the activity of IAA oxidase increased from 27.2Vg/h·ml liquid enzyme(LE ) to 11.17μg/h·ml LE in 10-25 days after blossom, It is con-cluded that due to the enhancement of IAA oxidase activity,the content of IAA decreased,and the accumulation of protein was also delayed. Therefore, it is considered as one factorwhich caused early physiological fruit drop.

关 键 词：佛手 落果 生理 

分 类 号：S436.661.1[农业科学—农业昆虫与害虫防治]