木本植物二次开花现象初探  

Preliminary Report on the Phenomenon of Second Flowering of Woody Plant

作　　者：王俊杰 汪琪华[2] 

机构地区：[1]甘肃省林业科学研究院,甘肃兰州730020 [2]甘肃省博物馆,甘肃兰州730050

出　　处：《甘肃林业科技》2009年第4期10-15,59,共7页Journal of Gansu Forestry Science and Technology

摘　　要：利用搜索引擎等方法共收集到有关二次开花的报导283条记录,时间从1956年到2009年,涉及全国除西藏、香港、澳门之外的30个省(市、自治区),涉及54种木本植物。二次开花现象以梨树、桃树、苹果树、玉兰树、刺槐、泡桐等比较多见,尤以梨树最为多见。我国南方地区二次开花现象比北方更常见,发生二次开花现象的植物种类也比北方多,二次开花程度也较北方严重。自2003年以来,全国范围内有关二次开花现象的报道呈不断增加之势。影响木本植物二次开花的因素主要是植物体的遗传特性、早期落叶和暖秋暖冬反常气候,树龄大和树势衰弱也有一定影响。在果树栽培中,早熟品种一般比晚熟品种更容易发生二次开花现象。Using search engines and other methods, 283 records about the second flowering of the report were collected, which involving 30 provinces of China except Tibet, Hong Kong, Macao （municipalities and autonomous regions）, and involving 54 kinds of woody plants from 1956 to 2009. Phenomenon of secondary flowering of pear tree, peach tree, apple tree, magnolia tree, locust and paulownia were more common, especially pear tree. The phenomenon of the second flowering is more common in southern China than northern China, secondary flowering of plant species more than the north, and the second flowering degree was serious than the north. Since 2003, the reports about the second flowering phenomenon in nationwide scope showed the increasing trend. Genetic characteristics of plants were the main factors affecting the second flowering of woody plant, early defoliation and anomalous climate of warm autumn and warm winter, old age and the weak growing tendency of trees also have an impact. In the aspect of fruit tree cultivation, the second flowerings of the early maturing varieties happened easier than late-maturing varieties.

关 键 词：木本植物 二次开花 遗传特征 早期落叶 气候反常 

分 类 号：Q948.112.4[生物学—植物学]